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1. What is the term used to describe a microorganism that
can cause infectious disease?
a) Pathogen
b) Vector
c) Fomite
d) Reservoir
Answer: A. Pathogen is the term used to describe a diseaseproducing microorganism, such as a virus, parasite, fungus,
or bacterium [2].
2. What is the name of the environment or habitat where a
pathogen can live and multiply?
a) Reservoir
b) Portal of exit
c) Mode of transmission
d) Portal of entry
Answer: A. Reservoir is the name of the environment or
habitat where a pathogen can live and multiply. Examples
of reservoirs are environmental surfaces, equipment, body
fluids, food, water, soil, skin, and respiratory tract [2].
3. What is the route by which an infectious agent escapes
or leaves the reservoir?
a) Reservoir
b) Portal of exit
c) Mode of transmission
d) Portal of entry
Answer: B. Portal of exit is the route by which an
infectious agent escapes or leaves the reservoir. In humans,Â
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