Multiple Choice
You were sick with the flu last winter. Why then does your doctor suggest you be vaccinated against the flu this year?
A) Flu viruses mutate rapidly.
B) The virus inactivates helper T cells.
C) The virus blocked your immune system's ability to produce memory cells.
D) Surviving the flu one year inhibits the immune system the second year.
Correct Answer:
Verified
Correct Answer:
Verified
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