Multiple Choice
Why might humans need yearly vaccination for influenza?
A) There has been an increase in immunodeficiency diseases.
B) Influenza typically causes anaphylactic shock.
C) Memory B cells die out after one year.
D) Influenza virus undergoes rapid mutation that alters the surface proteins in the cells it infects.
E) Influenza initiates autoimmune disorders.
Correct Answer:
Verified
Correct Answer:
Verified
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