a
The flu vaccine was not a close enough match to the flu virus that was circulating in the community to protect against it.
Which statement best explains why someone who has received the flu vaccine can still get the flu?
a
The flu vaccine was not a close enough match to the flu virus that was circulating in the community to protect against it.
b
The flu vaccine was too similar to the flu virus that was circulating in the community to protect against it.
c
The flu vaccine helped the flu virus to strengthen inside the person's body.
d
The flu vaccine helped the flu virus to spread inside the person's body.
1 answer