Quick Answer: What Are The Components Of Epidemiology?

Why is the epidemiological triangle important?

The Epidemiologic Triangle The Epidemiologic Triangle is a model that scientists have developed for studying health problems.

It can help your students understand infectious diseases and how they spread..

What are the four methods of epidemiology?

Epidemiological studies generally fall into four broad categories:cross-sectional studies.case-control studies.cohort studies.intervention studies.

What are the four types of infection?

This article will focus on the most common and deadly types of infection: bacterial, viral, fungal, and prion.

What are aims 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 3 main elements of the definition of epidemiology?

Epidemiology includes assessment of the distribution (including describing demographic characteristics of an affected population), determinants (including a study of possible risk factors), and the application to control health problems (such as closing a restaurant).

What is the epidemiological triangle?

The Epidemiologic Triangle, sometimes referred to as the Epidemiologic Triad, is a tool that scientists use for addressing the three components that contribute to the spread of disease: an external agent, a susceptible host and an environment that brings the agent and host together.

What are the 3 factors that cause disease?

Infectious diseases can be caused by:Bacteria. These one-cell organisms are responsible for illnesses such as strep throat, urinary tract infections and tuberculosis.Viruses. Even smaller than bacteria, viruses cause a multitude of diseases ranging from the common cold to AIDS.Fungi. … Parasites.

What are the predisposing factors of disease?

Key PointsSome predisposing factors of contracting infectious diseases can be anatomical, genetic, general and disease specific.Climate and weather, and other environmental factors that are affected by them, can also predispose people to infectious agents.More items…•

What are the five environmental factors?

They include:Exposure to hazardous substances in the air, water, soil, and food.Natural and technological disasters.Climate change.Occupational hazards.The built environment.

What are the five signs of an infection?

Know the Signs and Symptoms of InfectionFever (this is sometimes the only sign of an infection).Chills and sweats.Change in cough or a new cough.Sore throat or new mouth sore.Shortness of breath.Nasal congestion.Stiff neck.Burning or pain with urination.More items…

What are the three components of the epidemiological triangle?

A number of models of disease causation have been proposed. Among the simplest of these is the epidemiologic triad or triangle, the traditional model for infectious disease. The triad consists of an external agent, a susceptible host, and an environment that brings the host and agent together.

What are the 5 W’s of epidemiology?

The difference is that epidemiologists tend to use synonyms for the 5 W’s: diagnosis or health event (what), person (who), place (where), time (when), and causes, risk factors, and modes of transmission (why/how).

What are the 3 major types of epidemiologic studies?

Three major types of epidemiologic studies are cohort, case-control, and cross-sectional studies (study designs are discussed in more detail in IOM, 2000). A cohort, or longitudinal, study follows a defined group over time.

What is a cause in epidemiology?

In epidemiology, the “cause” is an agent (microbial germs, polluted water, smoking, etc.) that modifies health, and the “effect” describes the the way that the health is changed by the agent. The agent is often potentially pathogenic (in which case it is known as a “risk factor”).

What is the best definition for epidemiology?

By definition, epidemiology is the study (scientific, systematic, and data-driven) of the distribution (frequency, pattern) and determinants (causes, risk factors) of health-related states and events (not just diseases) in specified populations (neighborhood, school, city, state, country, global).

What is the role of epidemiology?

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.

What are the two types of epidemiology?

Epidemiologic studies fall into two categories: experimental and observational.

What is an example of epidemiology?

Epidemiological studies measure the risk of illness or death in an exposed population compared to that risk in an identical, unexposed population (for example, a population the same age, sex, race and social status as the exposed population).

What is epidemiologic evidence?

Unlike laboratory experiments, epidemiology provides evidence based on studies of human populations under real-world conditions. It largely avoids the extrapolations across species and levels of exposure that are required for the use of data from animal experiments, and which contribute large uncertainties.

What is the strongest study design?

A well-designed randomized controlled trial, where feasible, is generally the strongest study design for evaluating an intervention’s effectiveness.

What is it called when you study diseases?

Epidemiology is the study and analysis of the distribution (who, when, and where), patterns and determinants of health and disease conditions in defined populations.