Question: What Are The Three Components Of The Epidemiological Triangle?

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 is the agent host and environment of Ebola?

Some fruit bats are considered to be the natural host of Ebola virus. In Africa, infection has been documented through the handling of infected chimpanzees, gorillas, fruit bats, monkeys, forest antelope and porcupines found ill or dead in the rainforest.

What are the three vertices of the epidemiological triangle?

coli) in describing the three vertices (corners) of the Epidemiologic Triangle. Those vertices are “agent,” “host,” and “environment.” After this in-class introduction, students will gather information about chickenpox and report back to the class on what they have learned.

Which of the following is an indirect infectious disease transmission mode?

Indirect contact infections spread when an infected person sneezes or coughs, sending infectious droplets into the air. If healthy people inhale the infectious droplets, or if the contaminated droplets land directly in their eyes, nose or mouth, they risk becoming ill.

Why are epidemiological measures useful quizlet?

Epidemiological measures are useful tools because: They help determine which diseases may need greater public health campaign or prevention efforts. … An estimated 1.8 million infected individuals died from the disease. Calculate the incidence rate of tuberculosis per 100,000 in the population in 2015.

What are the factors that affect how contagious infectious diseases spread?

Environmental factors influencing the spread of communicable diseases. Water, sanitation, food and air quality are vital elements in the transmission of communicable diseases and in the spread of diseases prone to cause epidemics.

What are the three components of the epidemiological triangle quizlet?

The epidemiological Triangle model includes three key elements: the agent, host, and environment.

What are the basic principles of epidemiology?

Uses of EpidemiologyCount health-related events.Describe the distribution of health-related events in the population.Describe clinical patterns.Identify risk factors for developing diseases.Identify causes or determinants of disease.Identify control and/or preventive measures.More items…•

What is the host agent environment triangle?

The classical epidemiological triangle of host-agent-environment describes how individuals become ill. Disease occurs when an outside agent (vector) capable of causing disease or injury meets a host that is vulnerable to the agent. This happens in an environment that allows the agent and host to interact.

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 five 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.

What are epidemiological factors?

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 are the three components of epidemiology?

The epidemiologic triangle is made up of three parts: agent, host and environment.Agent. The agent is the microorganism that actually causes the disease in question. … Host. The agent infects the host, which is the organism that carries the disease. … Environment. … HIV.

What are the 3 major types of epidemiological 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.