Respuesta :
The answer is 'The flu vaccine is injected under the skin in an inactive form and the immune system responds with antibodies to the flu protecting you from future exposure to the flu.'. That is why sometimes you get the flu even though you got a shot because there are different forms of the flu.
" The flu vaccine is injected under the skin in an inactive form and the immune system responds with antibodies to the flu protecting you from future exposure to the flu."
Hope i'm right
Hope i'm right