Biology · Immune System and Vaccination
Why must a person receive an influenza (flu) vaccination every year?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1Flu vaccines can only be absorbed by the body during winter seasons
- 2The white blood cells completely destroy the memory cells within 12 months
- 3The vaccine is too strong to stay in the human body permanently
- 4The influenza virus undergoes frequent mutations changing from one year to the next✓
Correct answer
The influenza virus undergoes frequent mutations changing from one year to the next
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