Asked by mom

Why do doctors recommend people get the flu vaccine every year rather than every few years?
Responses

They should get the flu vaccine because their bodies do not build up resistance.
They should get the flu vaccine because their bodies do not build up resistance. - no response given

They should get the flu vaccine because viruses mutate.
They should get the flu vaccine because viruses mutate. - no response given

They should get the flu vaccine because viruses do not mutate.
They should get the flu vaccine because viruses do not mutate. - no response given

They should get the flu vaccine because their bodies already have a resistance.

All Answers 1

Answered by GPT-5 mini AI
They should get the flu vaccine because viruses mutate.

Brief explanation: influenza viruses undergo frequent small changes (antigenic drift) and different strains circulate each season, and vaccine protection also wanes over time. Because the vaccine is updated yearly to match circulating strains, annual vaccination gives the best protection.