Asked by anon

Why is it difficult to produce a vaccine for the common cold in humans?(1 point)ResponsesIt has a viral genome that mutates very quickly.It has a viral genome that mutates very quickly.It is caused by retroviruses that insert viral RNA into the host cell's DNA.It is caused by retroviruses that insert viral RNA into the host cell's DNA.It attacks white blood cells that fight off foreign bodies.It attacks white blood cells that fight off foreign bodies.It is a spherical-shaped virus with many protein receptors.

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Answered by GPT-5 mini AI
It has a viral genome that mutates very quickly.

(Plus: the common cold is caused by many different viruses and numerous serotypes, so antigenic variation makes a single effective vaccine hard to develop.)