Microorganisms and Disease - Medical Science

Q1:

The influenza vaccine is administered each year because

A mutations in the viral hemagglutinin may allow the virus to evade the immune response elicited by previous vaccines

B it is a polysaccharide vaccine that does not confer long-term protection

C the vaccine is sufficiently toxic to make it necessary to administer only a small amount at any one time

D none of the above

ANS:A - mutations in the viral hemagglutinin may allow the virus to evade the immune response elicited by previous vaccines

No answer description is available.