Why do doctors recommend people get the flu vaccine every year rather than every few years?(1 point)

Question

Responses

They should get the flu vaccine because viruses mutate.
They should get the flu vaccine because viruses mutate.

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.

They should get the flu vaccine because viruses do not mutate.
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 already have a resistance.

Answer 1

The correct response is:

They should get the flu vaccine because viruses mutate.

Flu viruses change frequently, so the vaccine is updated each year to provide protection against the most current strains.