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Complete the following sentence by using the list of options for the epidemiological triangle.

The nurse is completing the epidemiological triangle and understands that

is an example of an agent could represent a host, and is an example of environment.
Answer and Explanation

The Correct Answer is {"dropdown-group-1":"B","dropdown-group-2":"A","dropdown-group-3":"A"}

I. Agent: Plasmodium-Plasmodium is a protozoan parasite responsible for causing malaria. It is the infectious microorganism that leads to disease, making it the agent in this scenario.

II. Host: Human- In malaria transmission, humans serve as the primary host where Plasmodium multiplies and causes illness. The parasite infects red blood cells, leading to symptoms like fever and chills.

III. Environment: Stagnant water- Stagnant water serves as a breeding ground for Anopheles mosquitoes, which are the vectors that transmit Plasmodium to humans. The environment plays a crucial role in maintaining the conditions necessary for disease transmission.


 


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Related Questions

Correct Answer is A

Explanation

A. Epidemiologic triangle: The epidemiologic triangle is a public health model that examines three key components of disease transmission:

    • Agent – The microorganism (bacteria, virus, fungus, etc.).

    • Host – The person or animal that harbors the disease.

    • Environment – External conditions that contribute to disease spread.

B. Health promotion: The health promotion model focuses on behavioral and lifestyle changes to prevent illness rather than examining the direct causes of disease.

C. Natural history of disease: The natural history of disease describes how a disease progresses without intervention from the initial exposure to resolution or chronicity, but it does not specifically analyze the agent, host, and environment.

D. Levels of prevention: The levels of prevention (primary, secondary, tertiary) focus on preventing and managing disease, but they do not analyze the factors leading to disease transmission like the epidemiologic triangle does.

Correct Answer is B

Explanation

A. Hepatitis B: Hepatitis B is a bloodborne disease, primarily spread through contact with infected bodily fluids, not through a vector.

B. Rocky Mountain spotted fever: Rocky Mountain spotted fever is a vector-borne disease transmitted by tick bites. Vectors are living organisms, such as mosquitoes or ticks, that carry infectious agents.

C. E. coli O157:H7: E. coli is a foodborne illness that spreads through contaminated food or water, not via a vector.

D. Anthrax: Anthrax is a bacterial infection that spreads through direct contact, ingestion, or inhalation of spores, not through a vector.

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