Textbook Question
_____Postpolio syndrome is due to latent polioviruses that become active 30 to 40 years after the initial infection.
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21. Principles of Disease
Characteristics of Infectious Disease
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Which of the following can be considered a reservoir for infectious diseases?
A
Sunlight
B
Sterile surgical instruments
C
Humans who carry the pathogen without showing symptoms
D
Boiled water
Verified step by step guidance1
Understand the definition of a reservoir in infectious disease: it is any person, animal, plant, soil, or substance in which an infectious agent normally lives and multiplies, serving as a source from which other individuals can be infected.
Evaluate each option against this definition: Sunlight does not harbor pathogens, so it cannot be a reservoir.
Sterile surgical instruments are free of microorganisms, so they cannot serve as reservoirs.
Humans who carry the pathogen without showing symptoms can harbor and transmit the infectious agent, fitting the definition of a reservoir.
Boiled water is free of pathogens due to the boiling process, so it cannot be a reservoir.
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