What 3 components make up the epidemiologic triangle?

Agent, Host, Environment.

Agent, Condition, Variable

Agent, Host, Condition

Agent, Host, Disease

Answer and Explanation

The Correct Answer is A

A. Agent, Host, Environment: The epidemiologic triangle consists of:

- Agent – The cause of disease (e.g., bacteria, viruses, toxins).
- Host – The person or animal affected by the disease.
- Environment – External factors that influence disease transmission (e.g., climate, sanitation, population density).

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.

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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.

A. A recent potluck that had a petting zoo B. A recent potluck that served spinach C. A recent potluck that served baked beans out of a bent can D. A recent potluck that served pork products

Correct Answer is C

Explanation

A. A recent potluck that had a petting zoo: While petting zoos can be sources of zoonotic infections like E. coli or Salmonella, they are not associated with botulism, which comes from improperly processed foods.

B. A recent potluck that served spinach: Spinach can harbor bacterial infections like E. coli or Listeria, but it is not a common source of botulism unless improperly canned.

C. A recent potluck that served baked beans out of a bent can: Botulism is caused by Clostridium botulinum, a bacterium that produces neurotoxins in improperly canned, preserved, or stored foods. A bent or bulging can suggests contamination and potential toxin production, making it the most likely cause of botulism in this scenario.

D. A recent potluck that served pork products: Pork can transmit trichinosis (from undercooked meat) or bacterial infections (Salmonella, Listeria), but botulism is primarily linked to canned foods, not pork products.

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What 3 components make up the epidemiologic triangle?

Nursing Test Bank

Naxlex Comprehensive Predictor Exams

A client is using a primary prevention strategy to prevent infectious disease. Which of the following actions is the client most likely taking?

Correct Answer is A

Explanation

The public health nurse is investigating a botulism outbreak. The public health nurse understands that which of the following is the greatest risk factor for development of the disease?

Correct Answer is C

Explanation

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The public health nurse understands that which of the following is an example of a vector borne disease?

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