Question

a reservoir host who is unaware of the presence of the pathogen and so spreads the disease is a ______.

multiple choice

carrier

fomite

susceptible host

pathogen

vector

Explanation:

Analyze the question stem

The question asks for the term that describes "A reservoir host who is unaware of the presence of the pathogen and so spreads the disease."

Evaluate the options using the Chain of Infection

Using the Chain of Infection knowledge point:

• carrier: An individual who harbors a specific infectious agent without visible clinical disease and serves as a potential source of infection to others. This matches the definition of being unaware of the pathogen while spreading it.
• fomite: An inanimate object or substance capable of transmitting infectious organisms.
• susceptible host: An individual who is at risk of developing an infection because they lack immunity.
• pathogen: A disease-causing microorganism.
• vector: An organism (typically an insect or arthropod) that transmits a pathogen from one host to another.

Therefore, the correct term is "carrier".

Answer:

• carrier (Correct answer)
• fomite
• susceptible host
• pathogen
• vector