Cl 02 principles in control and prevention of communicable diseasesAzmi Mohd Tamil
The document discusses principles of disease prevention and control, describing the epidemiologic triangle of agent, host, and environment factors in disease transmission. It explains the stages of disease from susceptibility to recovery and the types of prevention for each stage - primary prevention aims to reduce new occurrences, secondary prevention reduces duration and severity, and tertiary prevention minimizes complications. Examples are given for prevention and control strategies across communicable and non-communicable diseases.
A communicable disease is an infectious disease that is transmitted from one person or animal to another directly or indirectly. Communicable diseases can be transmitted through various modes such as direct contact, droplet infection, contaminated vehicles like food or water, vectors like mosquitoes, and from mother to fetus. Common examples of communicable diseases include respiratory infections like tuberculosis, measles, and influenza; gastrointestinal infections spread through fecal-oral transmission like cholera and typhoid; and vector-borne diseases transmitted by mosquitoes and arthropods.
This document provides an overview of health promotion including definitions, approaches, models, activities, processes, principles, tools, and programs. It also discusses evaluation of health promotion programs and challenges. Key points include:
- Health promotion is defined as empowering people to increase control over their health through various population-based, participatory, multi-sectoral approaches.
- Common models include Tannahill's which incorporates health education, prevention, and protection.
- Activities can target populations, lifestyles, environments and include education, policy, community development.
- Stakeholders have roles in building healthy public policy, supportive environments, skills and reorienting services.
- Evaluation assesses
The document discusses the iceberg phenomenon, which describes a situation where a large percentage of a problem is hidden from view. Only a small "tip of the iceberg" is apparent. It provides examples of diagnosed, undiagnosed, and wrongly diagnosed diseases as well as risk factors. Several factors can determine the size of a disease iceberg, including agent, host, and environmental factors. The iceberg concept can be useful for detecting subclinical cases, controlling disease, and understanding the natural history of disease. It also discusses how the iceberg concept can be applied to primary, secondary, and tertiary prevention strategies.
The document discusses the history and definitions of health promotion. It provides:
1) The term "health promotion" was first used in 1974 and refers to strategies that tackle the wider determinants of health beyond just healthcare.
2) Health promotion aims to empower people to have more control over their health and aspects of their lives that affect it.
3) Key strategies of health promotion include building healthy public policy, creating supportive environments, strengthening community action, developing personal skills, and reorienting health services.
This document discusses the "web of causation" model for chronic disease epidemiology. It uses myocardial infarction (MI) as an example of a disease with multiple interacting causes. The model shows various biological and environmental factors that can increase MI risk, and how they are interrelated. It emphasizes that prevention efforts may be most effective by addressing multiple risk factors through public health strategies like health education and policies targeting diet, exercise, tobacco, and alcohol. Both population-wide primary prevention and high-risk patient secondary prevention are important to control disease in this model.
This document discusses concepts related to disease prevention, including the iceberg of disease model and levels of prevention. It explains that the iceberg model represents undiagnosed cases below the waterline and clinical cases above. It also outlines the goals of disease control as reducing incidence, duration, and complications. Finally, it describes the three levels of prevention - primary, secondary, and tertiary - including their goals and examples of interventions.
Cl 02 principles in control and prevention of communicable diseasesAzmi Mohd Tamil
The document discusses principles of disease prevention and control, describing the epidemiologic triangle of agent, host, and environment factors in disease transmission. It explains the stages of disease from susceptibility to recovery and the types of prevention for each stage - primary prevention aims to reduce new occurrences, secondary prevention reduces duration and severity, and tertiary prevention minimizes complications. Examples are given for prevention and control strategies across communicable and non-communicable diseases.
A communicable disease is an infectious disease that is transmitted from one person or animal to another directly or indirectly. Communicable diseases can be transmitted through various modes such as direct contact, droplet infection, contaminated vehicles like food or water, vectors like mosquitoes, and from mother to fetus. Common examples of communicable diseases include respiratory infections like tuberculosis, measles, and influenza; gastrointestinal infections spread through fecal-oral transmission like cholera and typhoid; and vector-borne diseases transmitted by mosquitoes and arthropods.
This document provides an overview of health promotion including definitions, approaches, models, activities, processes, principles, tools, and programs. It also discusses evaluation of health promotion programs and challenges. Key points include:
- Health promotion is defined as empowering people to increase control over their health through various population-based, participatory, multi-sectoral approaches.
- Common models include Tannahill's which incorporates health education, prevention, and protection.
- Activities can target populations, lifestyles, environments and include education, policy, community development.
- Stakeholders have roles in building healthy public policy, supportive environments, skills and reorienting services.
- Evaluation assesses
The document discusses the iceberg phenomenon, which describes a situation where a large percentage of a problem is hidden from view. Only a small "tip of the iceberg" is apparent. It provides examples of diagnosed, undiagnosed, and wrongly diagnosed diseases as well as risk factors. Several factors can determine the size of a disease iceberg, including agent, host, and environmental factors. The iceberg concept can be useful for detecting subclinical cases, controlling disease, and understanding the natural history of disease. It also discusses how the iceberg concept can be applied to primary, secondary, and tertiary prevention strategies.
The document discusses the history and definitions of health promotion. It provides:
1) The term "health promotion" was first used in 1974 and refers to strategies that tackle the wider determinants of health beyond just healthcare.
2) Health promotion aims to empower people to have more control over their health and aspects of their lives that affect it.
3) Key strategies of health promotion include building healthy public policy, creating supportive environments, strengthening community action, developing personal skills, and reorienting health services.
This document discusses the "web of causation" model for chronic disease epidemiology. It uses myocardial infarction (MI) as an example of a disease with multiple interacting causes. The model shows various biological and environmental factors that can increase MI risk, and how they are interrelated. It emphasizes that prevention efforts may be most effective by addressing multiple risk factors through public health strategies like health education and policies targeting diet, exercise, tobacco, and alcohol. Both population-wide primary prevention and high-risk patient secondary prevention are important to control disease in this model.
This document discusses concepts related to disease prevention, including the iceberg of disease model and levels of prevention. It explains that the iceberg model represents undiagnosed cases below the waterline and clinical cases above. It also outlines the goals of disease control as reducing incidence, duration, and complications. Finally, it describes the three levels of prevention - primary, secondary, and tertiary - including their goals and examples of interventions.
This document provides definitions and concepts related to epidemiology and communicable diseases. It begins with defining epidemiology as the study of health-related states and events in populations. It then discusses the epidemiologic triad of host, agent, and environment. Key concepts covered include the definition of communicable diseases, importance of studying their epidemiology, relevant terminology, and the chain of infection involving the source or reservoir, modes of transmission, and susceptible host. Dynamics of disease transmission and concepts such as virulence, incubation period, and transmission probability ratio are also defined.
Epidemiology prevention control of hypertensionAbhi Manu
This document discusses hypertension (high blood pressure), including its epidemiology, prevention, and control. It begins with learning objectives and defines hypertension. An estimated 1.13 billion people worldwide have hypertension. Prevalence is increasing and it is a major cause of death. Prevention efforts include population-wide strategies like reducing sodium intake and increasing physical activity, as well as high-risk strategies like monitoring blood pressure from childhood. Treatment involves lifestyle changes and medication to control blood pressure. New initiatives in India are screening for hypertension at all levels of the healthcare system.
Function , Core competencies and scope of public healthsirjana Tiwari
The document discusses the core competencies and scope of public health. It outlines seven core competencies - biostatistics, environmental health sciences, epidemiology, health policy and management, social and behavioral sciences, critical thinking, and problem solving. It also discusses emerging competencies like evidence-based approaches, public health systems, planning/management, policy, leadership, communication, and inter-professional practice. Additionally, the document outlines the broad scope of public health, covering areas like infectious and chronic disease prevention, mental health, bioterrorism, demography, environmental health, health financing, and addressing social determinants of health.
This document discusses dengue prevention and control. It notes that dengue occurs widely in tropical areas and is transmitted by Aedes mosquitoes. Prevention and control requires integrated vector management including larval source reduction through environmental modification, chemical and biological control of immature mosquitoes, and personal protection measures. Disease surveillance and prompt diagnosis/treatment of cases is also important. No vaccine or antiviral currently exists for dengue, so prevention through reducing human-vector contact is key to control.
Prevention and control of infectious diseasesJasmine John
This document discusses various methods for controlling infectious diseases, including controlling the disease reservoir, early diagnosis and notification, epidemiological investigations, isolation of infected individuals, treatment of infected individuals, and quarantine of exposed individuals. It provides details on each method, including definitions, objectives, examples of diseases where each method is particularly effective, and limitations.
This document discusses public health surveillance. It begins by defining surveillance and its main components, which include the ongoing collection and analysis of health data to facilitate disease prevention and control. The document then lists the main uses of surveillance data, such as estimating disease burden and evaluating programs. It describes three main sources of surveillance data: individuals, healthcare providers, and environmental conditions. The document outlines the five main steps of surveillance and discusses selecting health problems for surveillance based on factors like disease severity. It also describes different data collection methods, like notifications, surveys, and disease registries. In closing, it outlines the flow of surveillance information between data providers, analysts, and those responsible for public health response and decision-making.
Epidemiology has several common practical applications. It is used to investigate infectious diseases through routine surveillance by health departments. Epidemiologists in hospitals explore causes of hospital-acquired infections. It also evaluates the impact of public health policies on trends like smoking rates and obesity. Overall, epidemiology provides data to understand community health issues and disease risks, identify disease syndromes, uncover disease causes, and evaluate treatments and interventions.
This document discusses dengue fever, its historical background, magnitude as a global public health problem, causative agent, vector, transmission cycle, clinical manifestations, and strategies for prevention and control. It notes that dengue is caused by a virus transmitted by mosquitoes and affects up to 3 billion people globally each year. Prevention focuses on eliminating mosquito breeding sites and reducing human-vector contact through measures like draining standing water and using repellents and nets.
This document discusses the dynamics of disease transmission. It defines a reservoir as any living or non-living carrier that harbors an infectious agent. It identifies humans and animals as important reservoirs that can be clinical cases, subclinical carriers, or latent carriers. Diseases are transmitted either directly from person to person via contact or droplets, or indirectly via vectors like flies or fomites. A susceptible host is one that can be infected through a portal of entry, have the disease incubate at a site of election, and potentially transmit through a portal of exit if their immunity is low enough.
1) The document discusses surveillance in public health and describes its key components and purposes. Surveillance involves the systematic collection, analysis, and interpretation of health data to provide information for action.
2) An effective surveillance system is simple, flexible, timely, and produces high-quality data. It addresses an important public health problem and accomplishes its objectives of understanding disease trends, detecting outbreaks, and evaluating control measures.
3) The document outlines how to establish a surveillance system, including selecting priority diseases, defining standard case definitions, and developing regular reporting and data dissemination processes. Both passive and active surveillance methods are described.
The document discusses the epidemiological triad of agent, host, and environment. It describes disease agents as substances or forces that can initiate or perpetuate disease. Agents can be biological like viruses, bacteria, protozoa, or fungus. They can also be physical, chemical, mechanical, or nutritional. The host refers to humans and factors like demographics, biology, socioeconomics, lifestyle, and environment that influence susceptibility. The environment encompasses physical, biological, and psychosocial external factors that interact with host and agent.
Health education is a profession focused on educating people about health in various areas like physical, emotional, social, and environmental health. It aims to teach individuals and communities skills to make informed health decisions and promote healthy behaviors. In the 1970s, the role of health educators grew to focus on disease prevention and health promotion. Health educators are trained to assess community health needs, plan and implement education strategies, conduct research and evaluations, administer programs, serve as a health resource, and advocate for health and the profession. Their work helps motivate communities to take responsibility for their health and provides education to improve physical and mental well-being in developing areas. Credentialing processes were established in the late 1970s to standardize qualifications for health educators.
The document provides Malaysia's monthly infectious disease report for May 2005, listing the number of reported cases and deaths from various infectious diseases by state. It aims to strengthen disease surveillance in Malaysia by mandatorily notifying cases of 26 specified infectious diseases to the Ministry of Health under the Prevention and Control of Infectious Diseases Act 1988. The analysed surveillance data is intended to provide public health officials and policymakers with evidence-based information for decision making and early detection of disease outbreaks.
Primordial prevention aims to prevent risk factors from emerging by promoting healthy social and environmental conditions. Primary prevention removes the possibility of disease through measures like health education, immunization, and controlling environmental hazards. Secondary prevention detects disease early through screening and treats it before irreversible damage occurs. Tertiary prevention focuses on rehabilitation to reduce impairments and disabilities from advanced disease through medical, social, and vocational support. Together, these levels of prevention work to promote health and quality of life at all stages of disease development and progression.
The document defines key concepts in epidemiology and communicable disease transmission. It discusses:
- Epidemiology as the study of health-related events in populations and applying findings to control health problems.
- The epidemiologic triad of host, agent, and environment factors influencing disease.
- Communicable diseases as illnesses transmitted directly or indirectly between humans, animals, or the environment.
- The importance of studying communicable disease epidemiology to understand changing disease patterns and potential infectious causes of chronic diseases.
This document discusses epidemiology, which is the study of the distribution and determinants of health and disease in populations. It covers the components, characteristics, and types of epidemiology studies. Descriptive epidemiology involves studying disease distribution by person, place, and time variables. Analytic epidemiology uses epidemiologic methods to explain disease occurrence and identify causal mechanisms. Key topics include descriptive variables, temporal variations, community diagnosis, epidemics, and determination of disease etiology through descriptive and analytical studies.
This document provides an introduction to a course on communicable and non-communicable diseases. The course aims to provide students with knowledge, skills, and attitudes to identify, prevent, and control various diseases. The course objectives are to describe key concepts of communicable diseases, signs and symptoms of communicable and non-communicable diseases, legislation related to diseases, neglected tropical diseases in Zambia, and factors influencing disease transmission and prevention. The course content will cover terminology, communicable disease agents and factors, and introduce communicable diseases.
The document discusses various concepts of health and disease. It describes the biomedical, ecological, psychosocial, and holistic concepts of health. It also discusses the biopsychosocial dimensions of health. For disease, it covers the agent, host, environment triad and concepts of causation, natural history, and levels of prevention. It provides definitions of health from WHO and other sources and describes indicators used to measure community health status.
Non communicable disease and risk factorsRabin Dani
The document discusses non-communicable diseases (NCDs) such as heart disease, diabetes, cancer, and chronic lung disease. It notes that NCDs cause over 70% of deaths globally and are increasing in low and middle income countries. Key risk factors for NCDs include tobacco use, alcohol consumption, unhealthy diet, physical inactivity, obesity, high blood pressure, and high blood glucose. The status of NCDs in Nepal is described, with over 50% of deaths caused by cardiovascular or respiratory disease, cancer or diabetes. World Health Organization global targets for reducing NCD deaths and risk factors by 2025 are also presented.
This document discusses disease control and prevention. It defines disease and distinguishes between control and prevention measures. Control measures are applied after a disease occurs to prevent transmission, while prevention measures avoid the initial occurrence of disease. There are two main types of diseases - infectious diseases caused by viruses, bacteria, fungi or parasites, and non-infectious diseases resulting from non-trauma such as genetics or lifestyle factors, or non-trauma causes like physical or chemical trauma. Infectious diseases can be classified clinically based on symptoms or epidemiologically based on transmission mode. Some examples of infectious diseases discussed are COVID, dengue, tuberculosis, rabies, and polio.
Nosocomial infections refers to infections acquired during hospitalization, with symptoms usually occurring within forty–eight hours after admission, and can originate from bacterial flora present in patients, microorganisms from the environment transmitted via carriers, contaminated objects and surfaces, medical personnel, or invasive procedures. Despite their impact, surveillance systems and prevention programs for nosocomial infections are quite dishomogeneous and often lacking, due to chronic lack of funding for prevention and lack of awareness among healthcare workers.
Infection prevention and control (IPC) aims to prevent the spread of infections in healthcare facilities through various methods. IPC requires an understanding of how diseases spread and increasing patient susceptibility. Healthcare workers must be vaccinated, use proper hand hygiene like washing hands for 20 seconds, follow IPC guidelines, wear gloves and protective equipment, regularly disinfect surfaces, and receive IPC education and training. Developing an IPC policy and practicing antibiotic stewardship can also help control infections. When implemented together, these seven methods form a comprehensive IPC program.
This document provides definitions and concepts related to epidemiology and communicable diseases. It begins with defining epidemiology as the study of health-related states and events in populations. It then discusses the epidemiologic triad of host, agent, and environment. Key concepts covered include the definition of communicable diseases, importance of studying their epidemiology, relevant terminology, and the chain of infection involving the source or reservoir, modes of transmission, and susceptible host. Dynamics of disease transmission and concepts such as virulence, incubation period, and transmission probability ratio are also defined.
Epidemiology prevention control of hypertensionAbhi Manu
This document discusses hypertension (high blood pressure), including its epidemiology, prevention, and control. It begins with learning objectives and defines hypertension. An estimated 1.13 billion people worldwide have hypertension. Prevalence is increasing and it is a major cause of death. Prevention efforts include population-wide strategies like reducing sodium intake and increasing physical activity, as well as high-risk strategies like monitoring blood pressure from childhood. Treatment involves lifestyle changes and medication to control blood pressure. New initiatives in India are screening for hypertension at all levels of the healthcare system.
Function , Core competencies and scope of public healthsirjana Tiwari
The document discusses the core competencies and scope of public health. It outlines seven core competencies - biostatistics, environmental health sciences, epidemiology, health policy and management, social and behavioral sciences, critical thinking, and problem solving. It also discusses emerging competencies like evidence-based approaches, public health systems, planning/management, policy, leadership, communication, and inter-professional practice. Additionally, the document outlines the broad scope of public health, covering areas like infectious and chronic disease prevention, mental health, bioterrorism, demography, environmental health, health financing, and addressing social determinants of health.
This document discusses dengue prevention and control. It notes that dengue occurs widely in tropical areas and is transmitted by Aedes mosquitoes. Prevention and control requires integrated vector management including larval source reduction through environmental modification, chemical and biological control of immature mosquitoes, and personal protection measures. Disease surveillance and prompt diagnosis/treatment of cases is also important. No vaccine or antiviral currently exists for dengue, so prevention through reducing human-vector contact is key to control.
Prevention and control of infectious diseasesJasmine John
This document discusses various methods for controlling infectious diseases, including controlling the disease reservoir, early diagnosis and notification, epidemiological investigations, isolation of infected individuals, treatment of infected individuals, and quarantine of exposed individuals. It provides details on each method, including definitions, objectives, examples of diseases where each method is particularly effective, and limitations.
This document discusses public health surveillance. It begins by defining surveillance and its main components, which include the ongoing collection and analysis of health data to facilitate disease prevention and control. The document then lists the main uses of surveillance data, such as estimating disease burden and evaluating programs. It describes three main sources of surveillance data: individuals, healthcare providers, and environmental conditions. The document outlines the five main steps of surveillance and discusses selecting health problems for surveillance based on factors like disease severity. It also describes different data collection methods, like notifications, surveys, and disease registries. In closing, it outlines the flow of surveillance information between data providers, analysts, and those responsible for public health response and decision-making.
Epidemiology has several common practical applications. It is used to investigate infectious diseases through routine surveillance by health departments. Epidemiologists in hospitals explore causes of hospital-acquired infections. It also evaluates the impact of public health policies on trends like smoking rates and obesity. Overall, epidemiology provides data to understand community health issues and disease risks, identify disease syndromes, uncover disease causes, and evaluate treatments and interventions.
This document discusses dengue fever, its historical background, magnitude as a global public health problem, causative agent, vector, transmission cycle, clinical manifestations, and strategies for prevention and control. It notes that dengue is caused by a virus transmitted by mosquitoes and affects up to 3 billion people globally each year. Prevention focuses on eliminating mosquito breeding sites and reducing human-vector contact through measures like draining standing water and using repellents and nets.
This document discusses the dynamics of disease transmission. It defines a reservoir as any living or non-living carrier that harbors an infectious agent. It identifies humans and animals as important reservoirs that can be clinical cases, subclinical carriers, or latent carriers. Diseases are transmitted either directly from person to person via contact or droplets, or indirectly via vectors like flies or fomites. A susceptible host is one that can be infected through a portal of entry, have the disease incubate at a site of election, and potentially transmit through a portal of exit if their immunity is low enough.
1) The document discusses surveillance in public health and describes its key components and purposes. Surveillance involves the systematic collection, analysis, and interpretation of health data to provide information for action.
2) An effective surveillance system is simple, flexible, timely, and produces high-quality data. It addresses an important public health problem and accomplishes its objectives of understanding disease trends, detecting outbreaks, and evaluating control measures.
3) The document outlines how to establish a surveillance system, including selecting priority diseases, defining standard case definitions, and developing regular reporting and data dissemination processes. Both passive and active surveillance methods are described.
The document discusses the epidemiological triad of agent, host, and environment. It describes disease agents as substances or forces that can initiate or perpetuate disease. Agents can be biological like viruses, bacteria, protozoa, or fungus. They can also be physical, chemical, mechanical, or nutritional. The host refers to humans and factors like demographics, biology, socioeconomics, lifestyle, and environment that influence susceptibility. The environment encompasses physical, biological, and psychosocial external factors that interact with host and agent.
Health education is a profession focused on educating people about health in various areas like physical, emotional, social, and environmental health. It aims to teach individuals and communities skills to make informed health decisions and promote healthy behaviors. In the 1970s, the role of health educators grew to focus on disease prevention and health promotion. Health educators are trained to assess community health needs, plan and implement education strategies, conduct research and evaluations, administer programs, serve as a health resource, and advocate for health and the profession. Their work helps motivate communities to take responsibility for their health and provides education to improve physical and mental well-being in developing areas. Credentialing processes were established in the late 1970s to standardize qualifications for health educators.
The document provides Malaysia's monthly infectious disease report for May 2005, listing the number of reported cases and deaths from various infectious diseases by state. It aims to strengthen disease surveillance in Malaysia by mandatorily notifying cases of 26 specified infectious diseases to the Ministry of Health under the Prevention and Control of Infectious Diseases Act 1988. The analysed surveillance data is intended to provide public health officials and policymakers with evidence-based information for decision making and early detection of disease outbreaks.
Primordial prevention aims to prevent risk factors from emerging by promoting healthy social and environmental conditions. Primary prevention removes the possibility of disease through measures like health education, immunization, and controlling environmental hazards. Secondary prevention detects disease early through screening and treats it before irreversible damage occurs. Tertiary prevention focuses on rehabilitation to reduce impairments and disabilities from advanced disease through medical, social, and vocational support. Together, these levels of prevention work to promote health and quality of life at all stages of disease development and progression.
The document defines key concepts in epidemiology and communicable disease transmission. It discusses:
- Epidemiology as the study of health-related events in populations and applying findings to control health problems.
- The epidemiologic triad of host, agent, and environment factors influencing disease.
- Communicable diseases as illnesses transmitted directly or indirectly between humans, animals, or the environment.
- The importance of studying communicable disease epidemiology to understand changing disease patterns and potential infectious causes of chronic diseases.
This document discusses epidemiology, which is the study of the distribution and determinants of health and disease in populations. It covers the components, characteristics, and types of epidemiology studies. Descriptive epidemiology involves studying disease distribution by person, place, and time variables. Analytic epidemiology uses epidemiologic methods to explain disease occurrence and identify causal mechanisms. Key topics include descriptive variables, temporal variations, community diagnosis, epidemics, and determination of disease etiology through descriptive and analytical studies.
This document provides an introduction to a course on communicable and non-communicable diseases. The course aims to provide students with knowledge, skills, and attitudes to identify, prevent, and control various diseases. The course objectives are to describe key concepts of communicable diseases, signs and symptoms of communicable and non-communicable diseases, legislation related to diseases, neglected tropical diseases in Zambia, and factors influencing disease transmission and prevention. The course content will cover terminology, communicable disease agents and factors, and introduce communicable diseases.
The document discusses various concepts of health and disease. It describes the biomedical, ecological, psychosocial, and holistic concepts of health. It also discusses the biopsychosocial dimensions of health. For disease, it covers the agent, host, environment triad and concepts of causation, natural history, and levels of prevention. It provides definitions of health from WHO and other sources and describes indicators used to measure community health status.
Non communicable disease and risk factorsRabin Dani
The document discusses non-communicable diseases (NCDs) such as heart disease, diabetes, cancer, and chronic lung disease. It notes that NCDs cause over 70% of deaths globally and are increasing in low and middle income countries. Key risk factors for NCDs include tobacco use, alcohol consumption, unhealthy diet, physical inactivity, obesity, high blood pressure, and high blood glucose. The status of NCDs in Nepal is described, with over 50% of deaths caused by cardiovascular or respiratory disease, cancer or diabetes. World Health Organization global targets for reducing NCD deaths and risk factors by 2025 are also presented.
This document discusses disease control and prevention. It defines disease and distinguishes between control and prevention measures. Control measures are applied after a disease occurs to prevent transmission, while prevention measures avoid the initial occurrence of disease. There are two main types of diseases - infectious diseases caused by viruses, bacteria, fungi or parasites, and non-infectious diseases resulting from non-trauma such as genetics or lifestyle factors, or non-trauma causes like physical or chemical trauma. Infectious diseases can be classified clinically based on symptoms or epidemiologically based on transmission mode. Some examples of infectious diseases discussed are COVID, dengue, tuberculosis, rabies, and polio.
Nosocomial infections refers to infections acquired during hospitalization, with symptoms usually occurring within forty–eight hours after admission, and can originate from bacterial flora present in patients, microorganisms from the environment transmitted via carriers, contaminated objects and surfaces, medical personnel, or invasive procedures. Despite their impact, surveillance systems and prevention programs for nosocomial infections are quite dishomogeneous and often lacking, due to chronic lack of funding for prevention and lack of awareness among healthcare workers.
Infection prevention and control (IPC) aims to prevent the spread of infections in healthcare facilities through various methods. IPC requires an understanding of how diseases spread and increasing patient susceptibility. Healthcare workers must be vaccinated, use proper hand hygiene like washing hands for 20 seconds, follow IPC guidelines, wear gloves and protective equipment, regularly disinfect surfaces, and receive IPC education and training. Developing an IPC policy and practicing antibiotic stewardship can also help control infections. When implemented together, these seven methods form a comprehensive IPC program.
The document discusses infection control and prevention. It defines infection and outlines the objectives of infection control programs which are to protect patients and staff from acquiring infections. Standard precautions like hand washing, barriers, and proper disposal of sharps are essential. Additional precautions may also be required. Surveillance, preventative activities, and staff training are important components of effective infection control.
Understanding Communicable Diseases_ Causes, Effects, and Prevention Strategi...tewhimanshu23
✔Understanding Communicable Diseases: Causes, Effects, and Prevention Strategies
Communicable diseases, also known as infectious diseases, are illnesses caused by microorganisms such as bacteria, viruses, parasites, or fungi
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Infectious Diseases of Public Health Importance and the Benefits of Vaccinati...Stephen Olubulyera
Review of infectious diseases of public health important and the benefits of vaccinating medical & health practitioners and the subordinate staffs against the disease at a hospital setting
Infection prevention is essential for patient safety in hospitals. The CDC estimates that there are over 2 million preventable infections in hospitals each year resulting in 90,000 deaths. Nurses play an important role in preventing transmission of organisms through practices like asepsis. Infections occur when pathogens invade the body and multiply, potentially spreading locally or systemically. Those at highest risk include healthcare providers, patients undergoing procedures, and the community if medical waste is improperly disposed of. The chain of infection can be broken by following standard safety measures like handwashing, gloving, gowning, and use of personal protective equipment which help avoid contact with bodily fluids and prevent spread of bloodborne and airborne pathogens.
This document discusses various infection control measures used in healthcare settings. It covers topics like hand hygiene, cleaning and sterilization of medical equipment, use of personal protective equipment, vaccinations for healthcare workers, isolation procedures, and surveillance of infections. Hand washing is identified as the most important infection prevention measure. Different sterilization and disinfection methods are described along with their effectiveness in killing microorganisms. The roles of protective equipment, vaccinations, isolation, and infection surveillance are outlined.
This document discusses communicable disease prevention and control in emergency situations. It covers the following key points in 3 sentences:
Rapid health assessments are needed to understand disease threats and prioritize interventions. Surveillance systems should be set up to detect outbreaks and monitor trends to guide response efforts. A combination of prevention strategies like vaccination, water/sanitation and case management as well as outbreak control are necessary to reduce disease spread and protect public health in emergencies.
The seminar discusses infection control and prevention. It defines infection and describes how infectious agents enter the body and cause symptoms. Infection control aims to prevent healthcare-associated infections through strategies like screening patients, using personal protective barriers, proper sterilization and disposal of waste. A key part of infection control is surveillance of infections, preventative activities like standard precautions, and staff training. Standard precautions include hand washing, barrier use like gloves and gowns, safe sharps disposal, and handling of contaminated materials.
Contrary to their reputation as havens of healing, hospitals are home to invisible dangers known as germs that pose harm to patients and healthcare professionals alike. Hospital germ exposure has a wide range of risks, including the potential for infections, worse patient outcomes, and difficulties in preserving a secure medical environment. We examine the many aspects of hospital germ exposure in this thorough analysis, providing insight into the possible outcomes and risk-reduction tactics.
Control of communicable diseases dr jamilDr Abu Zar
Communicable diseases pose a major threat in emergency situations when populations are displaced. An outbreak will occur if the balance between the infectious agent, susceptible host population, and environment is disrupted. The document outlines key principles for controlling communicable disease outbreaks, including preventing exposure, reducing susceptibility, and managing illness. Acute respiratory infections, measles, diarrheal diseases, and malaria are the main causes of illness and death during emergencies.
This presentation was created to help improve awareness of students in healthcare setting and/or healthcare workers regarding infection prevention and control.
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Here are some of the key reasons why infection control is important in healthcare settings:
- Protecting patients, healthcare workers, and visitors from preventable healthcare-associated infections. Strict adherence to infection control protocols helps limit the spread of infections within medical facilities.
- Ensuring patient safety. Healthcare-associated infections can cause harm to patients and in some cases even lead to death. Proper infection control aims to provide safe care and improve patient outcomes.
- Compliance with regulations and laws. Federal and state laws as well as industry standards require healthcare facilities to implement infection control programs to protect public health. Failure to do so can result in penalties.
- Reducing costs. Healthcare-associated infections increase treatment costs and hospital stays
The document discusses infection prevention and control, including standard precautions and personal protective equipment. It defines infection, outlines the chain of infection and ways to break it, and describes various infection prevention strategies like hand hygiene, proper waste disposal, and use of masks, gloves, and other protective gear. Standard precautions aim to prevent transmission of pathogens and include practices like hand washing, gloving, gowning, and use of protective eyewear when exposed to bodily fluids.
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Role of community health nursing in pandemicsNisha Yadav
The document discusses the role of community health nurses in managing pandemics. It outlines that community health nurses play important roles in early identification of infections, recognizing patterns of disease spread, and implementing public health responses and policies. The document also describes how community health nurses can help maintain existing healthcare services, protect healthcare workers, educate communities to prevent spread, and shield vulnerable groups during a pandemic.
congenital GI disorders are very dangerous to child. it is also a leading cause for death of the child.
this congenital GI disorders includes cleft lip, cleft palate, hirchsprung's disease etc.
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Allopurinol, a uric acid synthesis inhibitor acts by inhibiting Xanthine oxidase competitively as well as non- competitively, Whereas Oxypurinol is a non-competitive inhibitor of xanthine oxidase.
Nutritional deficiency Disorder are problems in india.
It is very important to learn about Indian child's nutritional parameters as well the Disease related to alteration in their Nutrition.
Part III - Cumulative Grief: Learning how to honor the many losses that occur...bkling
Cumulative grief, also known as compounded grief, is grief that occurs more than once in a brief period of time. As a person with cancer, a caregiver or professional in this world, we are often met with confronting grief on a frequent basis. Learn about cumulative grief and ways to cope with it. We will also explore methods to heal from this challenging experience.
Storyboard on Skin- Innovative Learning (M-pharm) 2nd sem. (Cosmetics)MuskanShingari
Skin is the largest organ of the human body, serving crucial functions that include protection, sensation, regulation, and synthesis. Structurally, it consists of three main layers: the epidermis, dermis, and hypodermis (subcutaneous layer).
1. **Epidermis**: The outermost layer primarily composed of epithelial cells called keratinocytes. It provides a protective barrier against environmental factors, pathogens, and UV radiation.
2. **Dermis**: Located beneath the epidermis, the dermis contains connective tissue, blood vessels, hair follicles, and sweat glands. It plays a vital role in supporting and nourishing the epidermis, regulating body temperature, and housing sensory receptors for touch, pressure, temperature, and pain.
3. **Hypodermis**: Also known as the subcutaneous layer, it consists of fat and connective tissue that anchors the skin to underlying structures like muscles and bones. It provides insulation, cushioning, and energy storage.
Skin performs essential functions such as regulating body temperature through sweat production and blood flow control, synthesizing vitamin D when exposed to sunlight, and serving as a sensory interface with the external environment.
Maintaining skin health is crucial for overall well-being, involving proper hygiene, hydration, protection from sun exposure, and avoiding harmful substances. Skin conditions and diseases range from minor irritations to chronic disorders, emphasizing the importance of regular care and medical attention when needed.
Breast cancer :Receptor (ER/PR/HER2 NEU) Discordance.pptxDr. Sumit KUMAR
Receptor Discordance in Breast Carcinoma During the Course of Life
Definition:
Receptor discordance refers to changes in the status of hormone receptors (estrogen receptor ERα, progesterone receptor PgR, and HER2) in breast cancer tumors over time or between primary and metastatic sites.
Causes:
Tumor Evolution:
Genetic and epigenetic changes during tumor progression can lead to alterations in receptor status.
Treatment Effects:
Therapies, especially endocrine and targeted therapies, can selectively pressure tumor cells, causing shifts in receptor expression.
Heterogeneity:
Inherent heterogeneity within the tumor can result in subpopulations of cells with different receptor statuses.
Impact on Treatment:
Therapeutic Resistance:
Loss of ERα or PgR can lead to resistance to endocrine therapies.
HER2 discordance affects the efficacy of HER2-targeted treatments.
Treatment Adjustment:
Regular reassessment of receptor status may be necessary to adjust treatment strategies appropriately.
Clinical Implications:
Prognosis:
Receptor discordance is often associated with a poorer prognosis.
Biopsies:
Obtaining biopsies from metastatic sites is crucial for accurate receptor status assessment and effective treatment planning.
Monitoring:
Continuous monitoring of receptor status throughout the disease course can guide personalized therapy adjustments.
Understanding and managing receptor discordance is essential for optimizing treatment outcomes and improving the prognosis for breast cancer patients.
Storyboard on Acne-Innovative Learning-M. pharm. (2nd sem.) CosmeticsMuskanShingari
Acne is a common skin condition that occurs when hair follicles become clogged with oil and dead skin cells. It typically manifests as pimples, blackheads, or whiteheads, often on the face, chest, shoulders, or back. Acne can range from mild to severe and may cause emotional distress and scarring in some cases.
**Causes:**
1. **Excess Oil Production:** Hormonal changes during adolescence or certain times in adulthood can increase sebum (oil) production, leading to clogged pores.
2. **Clogged Pores:** When dead skin cells and oil block hair follicles, bacteria (usually Propionibacterium acnes) can thrive, causing inflammation and acne lesions.
3. **Hormonal Factors:** Fluctuations in hormone levels, such as during puberty, menstrual cycles, pregnancy, or certain medical conditions, can contribute to acne.
4. **Genetics:** A family history of acne can increase the likelihood of developing the condition.
**Types of Acne:**
- **Whiteheads:** Closed plugged pores.
- **Blackheads:** Open plugged pores with a dark surface.
- **Papules:** Small red, tender bumps.
- **Pustules:** Pimples with pus at their tips.
- **Nodules:** Large, solid, painful lumps beneath the surface.
- **Cysts:** Painful, pus-filled lumps beneath the surface that can cause scarring.
**Treatment:**
Treatment depends on the severity and type of acne but may include:
- **Topical Treatments:** Such as benzoyl peroxide, salicylic acid, or retinoids to reduce bacteria and unclog pores.
- **Oral Medications:** Antibiotics or oral contraceptives for hormonal acne.
- **Procedures:** Such as chemical peels, extraction of comedones, or light therapy for more severe cases.
**Prevention and Management:**
- **Cleanse:** Regularly wash skin with a gentle cleanser.
- **Moisturize:** Use non-comedogenic moisturizers to keep skin hydrated without clogging pores.
- **Avoid Irritants:** Such as harsh cosmetics or excessive scrubbing.
- **Sun Protection:** Use sunscreen to prevent exacerbation of acne scars and inflammation.
Acne treatment can take time, and consistency in skincare routines and treatments is crucial. Consulting a dermatologist can help tailor a treatment plan that suits individual needs and reduces the risk of scarring or long-term skin damage.
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Assignment on Control and Prevention of Diseases
1. 1
Control and Prevention of Diseases
The survival of the fittest'(Charles Darwin). In the world every individual fight against others
and his surrounds to survive. The most common war for living individuals is fight against
diseases. There are sever causes of disease and all can be categorized as Infectious and
noninfectious diseases. Among them infectious diseases are a leading cause of illness and death
throughout the world. The enormous diversity of microbes combined with their ability to
evolve and adapt to changing populations, environments, practices, and technologies creates
ongoing threats to health and continually challenges
our ability to prevent and control disease. In low‐
income countries, the impact of infectious diseases is
often devastating— decreasing survival rates,
particularly among children, and impeding
opportunities for economic growth and
development. In more developed countries,
infectious diseases also continue to present significant
health and economic concerns. However, every
disease has certain weak points susceptible to attack.
The basic approach in controlling and prevention
disease is to identify these weak points and break the
weakest links in the chain of transmission.
Definitions:
Diseases: A disease is any condition which results in the disorder of a structure or function in
a living organism that is not due to any external injury. The study of disease is called pathology,
which includes the study of cause. Disease is often construed as a medical condition associated
with specific symptoms and signs.
Control: Disease incidence is reduced to a minimal level, acceptable at the level of
country/region, at which the disease is no longer considered a public health problem, while
infection may still occur.
Prevention: Activities designed to protect patients and other members of the public from actual
or potential health threats and their harmful Consequences-(Mosby s Medical Dictionary, 8th
edition.2009)
Disease prevention covers measures not only to prevent the occurrence of disease, such as risk
factor reduction, but also to arrest its progress and reduce its consequences once established
(WHO, Geneva, 1984)
Elimination: Reduction to zero of the incidence of a specified disease in a defined community
or country or region as a result public health actions.
Eradication: Termination of all transmission of infections by extermination of infectious
agents.
2. 2
Control of Diseases:
Controlling Diseases at Health Worker Levels:
Physician, veterinarian, nurses, public health practitioners and others which are directly
involved in health services should practice the following points to protect them and control of
diseases transmission by aseptic technique which is a key component of all invasive medical
procedures.
Infection control in healthcare facilities: A hospital or healthcare facilities center-associated
infection prevention manual containing instructions and practices for patient care is an important tool.
The manual should be developed and updated by the infection control team and reviewed and
approved by the committee. It must be made readily available for health care workers and updated in
a timely fashion.
Hand hygiene: Hand hygiene is now regarded as one of the most important elements of
infection control activities. In the wake of the growing burden of health care associated
infections (HCAIs), the increasing severity of illness and complexity of treatment,
superimposed by multi-drug resistant (MDR) pathogen infections, health care practitioners
(HCPs) are reversing back to the basics of infection preventions by simple measures like hand
hygiene. This is because enough scientific evidence supports the observation that if properly
implemented, hand hygiene alone can significantly reduce the risk of cross-transmission of
infection in healthcare facilities (HCFs)
Sterilization: Sterilization is the killing or removal of all microorganisms, including bacterial
spores which are highly resistant from all usable equipment.
Cleaning: To removing unwanted substances, such as dirt, infectious agents, and other
impurities, from an object or environment.
Disinfection: Use of a disinfectant to destroy, inactivate or remove microorganisms that are
likely to cause infection, spoilage or other undesirable effects in an inanimate object.
Personal protective equipment: Employers have duties concerning the provision and use of
personal protective equipment (PPE) at work. PPE is equipment that will protect the user
against health or safety risks at work. It can include items such as safety helmets, gloves, eye
protection, high-visibility clothing, safety footwear and safety harnesses. It also includes
respiratory protective equipment (RPE)
Antimicrobial surfaces: An antimicrobial surface contains an antimicrobial agent that inhibits
the ability of microorganisms to grow on the surface of a material. Such surfaces are becoming
more widely investigated for possible use in various settings including clinics, industry, and
even the home.
Vaccination of health care workers: Vaccination for immunization.
Surveillance for infections: Surveillance is an essential component of an effective infection
prevention and control program– Sound epidemiological and statistical principles– Use
surveillance data to improve the quality of healthcare.
3. 3
Control of Route of Transmission:
Isolation and quarantine:
Isolation has a distinctive value in the control of some infectious diseases, e. g., diphtheria,
cholera, streptococcal respiratory disease, pneumonic plague, etc. In some diseases where there
is a large component of subclinical infection and carrier state (polio, hepatitis A, and typhoid
fever), even the most rigid isolation will not prevent the spread of the disease. It is also futile
to impose isolation if the disease is highly infectious before it is diagnosed as in the case of
mumps. Isolation has tailed in the control of diseases such as leprosy, tuberculosis. In the
control of these diseases, the concept of physical isolation has been replaced by chemical
isolation, i.e., rapid treatment of cases in their own homes and rendering them non-infectious
as quickly as possible. Lastly, cases are usually reported after the disease has spread widely
Taking all these limitations into consideration, it may be stated that isolation which is a "barrier
approach" to the prevention and control of infectious disease is not as successful as one would
imagine and may well give rise to a false sense of security. In modern-day disease control,
isolation is more judiciously applied and, in most cases, replaced by surveillance because of
improvements in epidemiological and disease control technologies. Today isolation is
recommended only when the risk of transmission of the infection is exceptionally serious
Quarantine has been defined as "the limitation of freedom of movement of such well persons
or domestic animals exposed to communicable disease for a period of time not longer than the
longest usual incubation period of the disease, in such manner as to prevent effective contact
with those not so exposed “. Quarantine measures are also "applied by a health authority to a
Route Example Control Measures
Direct contact Kissing, sexual contact, skin-to-skin
contact
Use of barrier (condom,
clothing, dressing)
Droplet Organism on large respiratory
droplets that people sneeze, cough,
drip, or exhale.
Respiratory etiquette
Indirect contact Contact with contaminated surfaces,
clothing, etc.
Hand-hygiene, sanitizing
infected surfaces
Vector Bite from disease-carrying ticks,
fleas, mosquitoes
Vector control
Vehicle Eat/drink contaminated food/drink,
transfuse infected blood, fomites
(bedding, infected tattoo needle)
Proper hygiene and sanitation,
cook food/boil water, etc.
Airborne Organism on dust particles or
small respiratory droplets
Respiratory etiquette,
isolation (if necessary)
4. 4
ship, an aircraft, a train, road vehicle, other means of transport or container, to prevent the
spread of disease, reservoirs of disease or vectors of disease"
Epidemiological Investigations:
An epidemiological investigation is called for whenever there is a disease outbreak the
methodology for which is given elsewhere. Broadly, the investigation covers the identification
of the source of infection and of the factors influencing its spread in the community. These may
include geographical situation, climatic condition, social, cultural and behavioral patterns, and
more importantly the character of the agent, reservoir the vectors and vehicles, and the
susceptible host populations.
Training in infection control and health care epidemiology: Health administrators should be
oriented towards the importance of the infection control programme. Health care workers should be
equipped with requisite knowledge, skills and attitudes for good infection control practices.
Controlling Diseases at Their Animal Source
National Veterinary Services are at the very core of the system for the prevention and control
of animal diseases. Among other aspects, they are responsible for early detection and rapid
response to outbreaks of emerging or re-emerging animal diseases. Enhancing the governance
of Veterinary Services must be the focus worldwide, aimed at optimizing the quality and
effectiveness of disease prevention and control systems, based on suitably adapted legislation.
The Veterinary Services in developing and in-transition countries require suitably adapted
legislation and the human and financial resources to enforce it, as well as capacity-building, in
order to protect animal health and thus public health, including food security and food safety.
Effective Surveillance: Upstream of animal disease prevention and control activities, there
must be effective active (planned) or passive (event-based) surveillance. The OIE defines
surveillance as ‘The systematic ongoing collection, collation, and analysis of data, and the
timely dissemination of information to those who need to know so that action can be taken.’
(OIE Terrestrial animal Health Code). To be effective, this strategy requires optimal
communication and collaboration between all stakeholders at all levels of the animal
production chain, from the animal producer, her/his veterinarian and the local laboratory, to
the highest national veterinary authorities
Early Detection of Diseases: An early detection system enables the timely detection and
identification of an incursion or emergence/re-emergence of a disease/infection in a given
country, zone or compartment. It must be under the official control of the Veterinary Services
complying with relevant OIE standards and includes the following characteristics: –
representative coverage of target animal populations, by fled services throughout the territory
in good cooperation with farmers and stakeholders;– ability to undertake effective
epidemiological investigations and reporting; – access to laboratories capable of diagnosing
and differentiating relevant diseases; – a training programme for veterinarians, veterinary para-
professionals and other stakeholders for detecting and reporting animal health incidents; – the
legal obligation for private veterinarians to report to the national Veterinary Authority; – a
well-established national chain of command.
5. 5
a) Collecting Samples: In order to have a rapid and effective diagnosis of any new disease
occurrence, the veterinary authorities must have a response mechanism for sample
collection and laboratory analysis. Particularly in developing countries, the shortage of
Feld veterinarians often means that disease detection and sample collection operations
have to be entrusted to suitably trained farmers or para professionals under close
supervision of accredited veterinarians.
b) Diagnosis: Once aware of a disease outbreak, the veterinary authorities must ensure
that the national and international community is well alerted, and that a final
confirmation and characterization of the pathogen be determined, if necessary in an
OIE Reference Laboratory for the specified disease. OIE has a global network of 296
Reference Laboratories and Collaborating Centers covering all relevant animal
diseases. (See Cartography).
Notification of Animal Diseases to the OIE: The OIE ensures the transparency of the world
animal health situation. On becoming an OIE Member, each country undertakes to report the
terrestrial and aquatic animal health situation in its territory in a timely and transparent manner.
The 180 OIE Member Countries can connect to the OIE server at any time to fulfil their
obligation to provide information, in a timely manner, on any relevant domestic or wild animal
disease detected within their territory.
Rapid Response Mechanisms:
Biosecurity: Biosecurity policies and measures taken to protect human and animal health from
biological risks are essential. In the case of a disease outbreak in a non-endemic area,
depopulation (by humane killing of infected and in-contact animals, in accordance with OIE
standards), followed by disinfection of establishments, equipment and vehicles, in conjunction
with a temporary ban or control of movements animals, will often be sufficient to prevent the
spread of the pathogen. Appropriate biosecurity measures must be implemented throughout the
world. Member Countries must comply with OIE standards and guidelines, by ensuring that all
those involved are properly trained and by providing them with the necessary material and
human resources.
Vaccination: Vaccination is very useful in the prevention and control of many diseases, if it
conforms to an existing disease control programme. However, vaccination on its own will not
usually achieve the desired results unless the vaccination programme is part of an integrated
control strategy utilizing a combination of control measures.
Implementing a vaccination strategy If it is determined that vaccination is an option, before
launching a specific vaccination policy Member Countries need to make sure that the
preconditions for a successful outcome have been met, i.e. ensuring vaccine quality and
defining the conditions under which any vaccination policy must eventually be stopped (exit
strategy).
Vaccine quality Vaccines should be produced in accordance with international guidelines
prescribed in the OIE Manual of Diagnostic Tests and Vaccines for Terrestrial Animals. For
most vaccines, ensuring a permanent cold chain (constant temperature control) is critical to the
successful implementation of a vaccination campaign. In some developing regions the OIE has
6. 6
created regional vaccine banks for rabies, foot and mouth disease and paste des petits ruminants
to provide support for its Member Countries in case of an emergency situation.
Animal identification and traceability Animal identification and traceability are very useful
tools in the effective control of animal diseases. In case of outbreaks, such measures will make
it easier to identify animals and animal products potentially exposed to the pathogen and allow
them to be traced, so that the appropriate control measures can be implemented. The application
of animal identification and traceability should comply with OIE standards
Preventive Measures of Diseases:
Most diseases are preventable to a greater or lesser degree, the chief exceptions being the
idiopathic diseases, such as the inherited metabolic defects. In the case of those diseases
resulting from environmental exposures, prevention is a matter of eliminating, or sharply
reducing, the factors responsible in the environment. Because chemicals and other substances
and materials originate largely from human activities, prevention ought to be a simple matter
of the application of well-established principles of industrial hygiene. In practice, however, this
is often difficult to achieve.
The infectious diseases may be prevented in one of two general ways:
(1) by preventing contact, and therefore transmission of infection, between the susceptible host
and the source of infection and
(2) by rendering the host unsusceptible, either by selective breeding or by induction of an
effective artificial immunity. The nature of the specific preventive measures, and their efficacy,
varies from one disease to another.
The concept of prevention is best defined in terms of levels of prevention. Traditionally,
Primordial prevention:
➢ Prevention of emergence or development of risk factors in countries or population
groups in which they have not yet appeared.
➢ It consists of actions and measures that inhibit the emergence and establishment of
environmental, economic, social and behavioral conditions, cultural patterns of living
known to increase the risk of disease.
➢ Mainly associated with chronic diseases.
➢ Intervention – Individual and mass education.
➢ Has to start in childhood when health risk behavior begins.
➢ Examples of primordial prevention
➢ National programmers and policies on:
• Food and nutrition
• Against smoking and drugs
• To promote regular physical activity
7. 7
Primary prevention:
➢ Action taken prior to the onset of disease, which removes the possibility that a disease
will ever occur.
➢ Intervention – pre-pathogenesis stage of disease.
➢ Concept of positive health: an acceptable level of health that will enable every
individual to lead a socially and economically productive life.
➢ Approaches for primary prevention for chronic diseases (WHO)
A. Population (mass) strategy:
• Directed at whole population irrespective of individual risk levels
• Directed towards socio-economic, behavioral and lifestyle changes
B. High risk strategy: To individuals at special risk.
➢ Efforts directed toward protection against specific diseases.
➢ Interventions:
✓ Immunization
✓ Use of specific nutrients
✓ Chemoprophylaxis
✓ Protection against occupational hazards
✓ Protection against accidents
✓ Protection from carcinogens
✓ Avoidance of allergens etc.
8. 8
Secondary prevention:
➢ Action which halts the progress of the disease at its incipient stage and prevents
complications.
➢ Intervention – early pathogenesis stage.
➢ It is the domain of clinical medicine.
➢ Earlier diagnosed – better prognosis.
➢ Reduces morbidity and mortality.
➢ Effective in acute conditions.
Tertiary prevention:
➢ All measures available to reduce or
limit impairments and disabilities,
minimize suffering caused by existing
departures from good health and to
promote the patient’s adjustment to
irremediable conditions.
➢ Intervention – late pathogenesis stage.
➢ The combined and coordinated use of
medical, educational, social and
vocational measures for training and
retraining the individual to the highest
possible level of functional ability.
➢ Requires cooperation from different
sections of society.
Quaternary prevention:
➢ The action taken to identify patient at risk of over-medicalization, to protect him from
new medical invasion, and to suggest to him interventions, which are ethically
acceptable.
➢ Quaternary prevention is the set of health activities to mitigate or avoid the
consequences of unnecessary or excessive intervention of the health system.
➢ Quaternary prevention should take precedence over any alternative preventive,
diagnostic and therapeutic, as is the practice version primum non nocere.
➢ Intervention types: Healthcare professionals must be aware of the consequences of their
decisions and include quaternary prevention interventions in their daily clinical practice
with each patient.
➢ Do not mistake risk factor with disease.
➢ To avoid checkups or unnecessary exams.
➢ To avoid technical interventionism in healthcare.
9. 9
Fig: Levels of Prevention of Diseases
To develop effective intervention programs, we will need to get people to change high-risk
behavior. We will need for people to stop doing things they have done for years and they will
need to begin doing things they perhaps have never done before. And we in the field of health
promotion will need to develop much more effective ways of communicating with people in
the community. To do that, we will have to re-think the way we classify diseases, we will need
to understand better what people care about, and we will need to do more relevant research.
This will require a new way of funding such research and of training a new generation of people
working in the field of health promotion and disease prevention. To accomplish this
transformation, we will require governmental policies very different from those now in place.
That may be the biggest, and most difficult, challenge of all. These are very challenging issues.
But so is the problem we face. We will need to do our best. And we will need to begin soon.
10. 10
Understanding disease pathology is the first step towards formulating preventive measures.
Prevention can be achieved in any stage of disease. Primordial or primary prevention is most
effective and economical. Disease control is also a part of prevention which is achieved by
means of continuous monitoring and surveillance of disease.
Reference:
• Mathur P. Hand hygiene: back to the basics of infection control. The Indian journal of medical
research. 2011 Nov;134(5):611.
• Walter R Dowdle. The Principles of Disease Elimination and Eradication. December 31, 1999
/ 48(SU01);23-7. Available at: http://www.cdc.gov/mmwr/preview/mmwrhtml/su48a7.htm
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