Question

Why do doctors recommend people get the flu vaccine every year rather than every few years?
(1 point)
• They should get the flu vaccine because viruses do not mutate.
• They should get the flu vaccine because their bodies already have a resistance.
• They should get the flu vaccine because their bodies do not build up resistance.
• They should get the flu vaccine because viruses mutate.

Answer 1

Doctors recommend people get the flu vaccine every year primarily because viruses mutate. Therefore, the correct answer is:

• They should get the flu vaccine because viruses mutate.

Flu viruses frequently change, which means the vaccine is updated annually to provide the best protection against the most prevalent strains.