What are the concepts of epidemiology in disease control and prevention

Epidemiology is based on two fundamental assumptions. First, the occurrence of disease is not random (i.e., various factors influence the likelihood of developing disease). Second, the study of populations enables the identification of the causes and preventive factors associated with disease.

What are the concepts of epidemiology?

Epidemiology is the study (scientific, systematic, data-driven) of the distribution (frequency, pattern) and determinants (causes, risk factors) of health-related states and events (not just diseases) in specified populations (patient is community, individuals viewed collectively), and the application of (since …

What are the 5 main objectives of epidemiology?

In the mid-1980s, five major tasks of epidemiology in public health practice were identified: public health surveillance, field investigation, analytic studies, evaluation, and linkages.

How is epidemiology useful in infection control and prevention?

Epidemiological methods are used to detect infectious pathogens, determine disease causality, understand pathogenesis and the natural history of infections as well as ways to devise effective interventions for their prevention and control.

What is the critical concept in epidemiology?

An important epidemiologic concept is that neither health nor disease occurs randomly throughout populations. Innumerable factors influence the temporal waxing and waning of disease. A disease is considered endemic when it is constantly present within a given geographic area.

What are the four methods of epidemiology?

Epidemiological investigations can be grouped into four broad categories: Observational epidemiology, experimental epidemiology, natural experiments, and Theoretical epidemiology. Several types study designs and measures of relationship are used in these investigations.

What is the concept of disease occurrence?

Section 8: Concepts of Disease Occurrence. A critical premise of epidemiology is that disease and other health events do not occur randomly in a population, but are more likely to occur in some members of the population than others because of risk factors that may not be distributed randomly in the population.

What is epidemiology and why is it important?

Epidemiology is the study of how often diseases occur in different groups of people and why. Epidemiological information is used to plan and evaluate strategies to prevent illness and as a guide to the management of patients in whom disease has already developed.

Why is infectious disease epidemiology important?

The Importance of Infectious Disease Epidemiology for Prevention. It is often said that “Epidemiology is the basic science of preventive medicine.” To prevent diseases, it is important to understand the causative agents, risk factors, and circumstances that lead to a specific disease.

What is the link with infectious diseases and epidemiology?

Infectious disease epidemiology (which includes the epidemiology of viruses) is the study of the complex relationships among hosts and infectious agents. Epidemiologists are interested in virus spread or transmission, with or without disease.

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What are the aims and goals of epidemiology?

The principal aim of epidemiology is to identify factors related to the occurrence of disease. Identification of these factors both causal ( causation) and risk factors, enable developing a rational basis for prevention ( epidemiology, prevention).

What are the aims of epidemiology?

Aims of Epidemiology There are two groups of aims: first, to describe the distribution, the pattern, and the natural history of disease in the general population, and second, to identify factors that may be causal in a disease process, and to evaluate strategies for the control, management, and prevention of a disease.

What are the three levels of prevention?

• improving the overall health of the population (primary prevention)
• improving (secondary prevention)
• improving treatment and recovery (tertiary prevention).

What does the iceberg concept of infection mean?

The iceberg phenomenon describe a situation in which a large percentage of a problem is subclinical, unreported, or otherwise hidden from view. Thus, only the “tip of the iceberg” is apparent to the epidemiologist.

What is causality in epidemiology?

Causation means either the production of an effect, or else the relation of cause to effect. Causes produce or occasion an effect. Some philosophers, and epidemiologists drawing largely on experimental sciences, require that causes be limited to well specified and active agents producing change.

What are the 3 components of epidemiology?

The epidemiologic triangle is made up of three parts: agent, host and environment.

What are different methods of epidemiology?

The three major epidemiologic techniques are descriptive, analytic, and experimental. Although all three can be used in investigating the occurrence of disease, the method used most is descriptive epidemiology.

What are the three epidemiological measures of disease frequency?

By convention, all three measures of disease frequency (prevalence, cumulative incidence, and incidence rate) are expressed as some multiple of 10 in order to facilitate comparisons. Consider these three examples: Cumulative incidence: 4/10 over 6 years = 0.40 = 40 per 100 or 40% over 6 years.

What are the principles of disease control?

The six fundamental principles of disease management are exclusion, eradication, protection, resistance, therapy, and avoidance of insect vectors and weed hosts.

What is an infection control epidemiologist?

Infection Control Epidemiologist Sometimes called hospital epidemiologists, these types of epidemiologists create and implement policies that control disease and limit the spread of infection within health care settings.

What is the principle of infectious disease?

The epidemiological triad model of infectious disease causation. The triad consists of an agent (pathogen), a susceptible host, and an environment (physical, social, behavioral, cultural, political, and economic factors) that brings the agent and host together, causing infection and disease to occur in the host.

Why is epidemiology important to environmental health?

Environmental epidemiology is one of the most important tools used in environmental management decision making owing to its capacity to assess and monitor environmental hazards in different settings and quantify their health impact on the population at risk.

What are the roles of epidemiology in public health?

Epidemiology is the study of disease in populations. … Epidemiological methods are used for disease surveillance to identify which hazards are the most important. Epidemiological studies are also used to identify risk factors which may represent critical control points in the food production system.

What is infection epidemiology?

Definition. The study of the incidence and spread of infectious diseases in populations over time. Host, pathogen and environmental factors are monitored to determine the dynamics of infection, the ultimate goal of which is to devise intervention strategies.

Which is a function of the Centers for disease Control and Prevention CDC )?

CDC is responsible for controlling the introduction and spread of infectious diseases, and provides consultation and assistance to other nations and international agencies to assist in improving their disease prevention and control, environmental health, and health promotion activities.

What is the best way to prevent the spread of infection?

1. Wash your hands well. …
2. Cover a cough. …
3. Wash and bandage all cuts. …
4. Do not pick at healing wounds or blemishes, or squeeze pimples.
5. Don’t share dishes, glasses, or eating utensils.
6. Avoid direct contact with napkins, tissues, handkerchiefs, or similar items used by others.

What is prevention in epidemiology?

Definition. Prevention is defined as “actions aimed at eradicating, eliminating or minimizing the impact of disease and disability. The concept of prevention is best defined in the context of levels, traditionally called primary, secondary and tertiary prevention” (Last 2001).

What are the 5 levels of prevention?

These preventive stages are primordial prevention, primary prevention, secondary prevention, and tertiary prevention. Combined, these strategies not only aim to prevent the onset of disease through risk reduction, but also downstream complications of a manifested disease.

What are the four strategies used to promote health and prevent disease?

The strategies are: Health Communication. Health Education. Policy, Systems, and Environmental Change.

What is clinical iceberg the concepts of ill health?

One concept of health is Clinical Iceberg this is a term used to describe unreported illness. The statistics produced by the government and the doctors have a 94% off unreported illness missing from the statistics. For example Lyme Disease is one of the highest unreported illnesses that is unreported.

Why is the iceberg phenomenon so important to epidemiology?

The Iceberg model is an epidemiological model that can be very useful in identifying new cases, caring for existing diseases, and planning future care for the disease in different countries and communities. The results of this study can clear up the ambiguities about the clinical spectrum of COVID-19.