Question
How is the flu vaccine tested?
OA. Animals are given the vaccine and then exposed to different flu viruses.
B. Humans are given the vaccine at certain intervals throughout the year to monitor its
effects.
C. A test subject is inoculated with varying forms of the vaccine at one time to determine
which is most effective.
D. After scientists conduct extensive tests in laboratories, the vaccine is sent directly to
the public.
Answer
A. Animals are given the vaccine and then exposed to different flu viruses.