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

Answer 1

They should get the flu vaccine because viruses mutate.