Why are booster vaccinations sometimes needed?
Answer and explanation
Correct answer: C. To raise the memory cell response and maintain immunity
- Step 1: A second exposure produces a stronger secondary response.
Answer
To raise the memory cell response and maintain immunity.
Why not the others: Because the first dose kills the pathogen, To give the body antibodies from another person and To avoid all side effects don't fit.
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More Immunity, DNA Technology and Change Over Time questions
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- A vaccine against a virus provides long-term protection mainly because it:
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