Biology · Immunology
The population that is at the highest risk against influenza infection should be immunized annually. Which one of the following is the most important reason for this?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1Repeated immunization interferes with the differentiation of plasma cells from memory cells thereby decreasing levels of neutralizing antibody.
- 2Influenza virus has a reasonably longer incubation period giving memory B cells time to respond by producing high levels of serum antibody.
- 3Influenza virus has a very short incubation period.
- 4Influenza virus can change its surface antigens very frequently due to antigenic drift and shift.✓
Correct answer
Influenza virus can change its surface antigens very frequently due to antigenic drift and shift.
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