What 3 components make up the epidemiologic triangle?
Agent, Host, Environment.
Agent, Condition, Variable
Agent, Host, Condition
Agent, Host, Disease
The Correct Answer is A
A. Agent, Host, Environment: The epidemiologic triangle consists of:
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Agent – The cause of disease (e.g., bacteria, viruses, toxins).
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Host – The person or animal affected by the disease.
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Environment – External factors that influence disease transmission (e.g., climate, sanitation, population density).
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B. Agent, Condition, Variable: "Condition" and "Variable" are not standard components of the epidemiologic triangle. The correct term is host (the affected person or animal).
C. Agent, Host, Condition: "Condition" is not part of the triangle. The environment is a crucial factor that influences the spread of disease.
D. Agent, Host, Disease: "Disease" is an outcome rather than a component of the epidemiologic triangle. The triangle focuses on the factors that contribute to disease spread, including the environment.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
A. A client receives a tetanus booster every 10 years: Primary prevention aims to prevent disease before it occurs. Vaccinations are a classic primary prevention measure.
B. A client with tetanus is given antibiotics and is placed on seizure precautions: This is tertiary prevention, as it focuses on managing an existing disease.
C. A client receives tetanus immunoglobulin after stepping on a nail: Post-exposure prophylaxis (PEP) is a secondary prevention strategy because it prevents disease progression after exposure.
D. A client is screened for a tetanus infection: Screening is secondary prevention, as it focuses on early detection, not prevention.
Correct Answer is B
Explanation
A. "Having unprotected sex with someone who is infected spreads HIV." HIV is commonly transmitted through unprotected sexual contact with an infected person.
B. "I wouldn't sit next to someone with HIV." HIV is not transmitted through casual contact, such as sitting next to someone, hugging, or sharing food. This response reflects a misunderstanding and indicates a need for more education.
C. "Transfusions of blood products that are contaminated can spread HIV." Although rare in developed countries due to blood screening, contaminated blood transfusions can transmit HIV.
D. "Sharing needles when shooting up drugs spreads HIV." Sharing contaminated needles is a major risk factor for HIV transmission.
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