JereneMeOpanglezlu JereneMeOpanglezlu

02-03-2017
Health

contestada

Why must a person receive a different flu vaccine each year to be protected against the flu?

Respuesta :

hiimruma hiimruma

02-03-2017

OK so basically the flu shot is a virus itself and we need a different one each time so that we do not become immune.

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