Multiple Choice
The "common cold" is so common because
A) no immunity to the virus develops.
B) the highly variable parainfluenza virus causes colds.
C) a large number of coronaviruses cause it.
D) over 100 strains of rhinovirus cause colds.
E) 100+ strains of rhinovirus and several other types of virus cause "colds."
Correct Answer:
Verified
Correct Answer:
Verified
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