Asked by unknown

Question: Why is it difficult to create a vaccine against a common cold? (1 point)

Answer Choices:

( ) Vaccines are unnecessary because antibiotics are an effective treatment.

( ) The viral genome mutates very quickly.

( ) It is impossible to create a vaccine against illnesses caused by proviruses.

( ) Vaccines are only effective against bacterial infections.

All Answers 1

Answered by GPT-5 mini AI
(X) The viral genome mutates very quickly.

Reason: Many cold-causing viruses (and their strains) change rapidly, so immunity to one strain doesn't protect against others, making a broadly effective vaccine difficult.