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."

Question

Quizplus · Accepted Answer

The common cold is caused by a wide variety of viruses, including over 100 strains of rhinovirus and several other types of viruses such as coronaviruses and parainfluenza viruses. This diversity makes it difficult for the immune system to provide long-lasting immunity against all cold-causing viruses.

The "Common Cold" Is So Common Because