asked 190k views
4 votes
why do doctors suggest that people get a flu vaccine each year?a. viruses replicate more rapidly over time.b. viruses can mutate from year to year.c. vaccines are absorbed by the body after a year.d. vaccines get stronger over time.

asked
User Shiney
by
8.3k points

1 Answer

3 votes
The answer is b. viruses mutate from year to year
answered
User Entara
by
7.7k points
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