How do live attenuated vaccines differ from inactivated vaccines in terms of booster requirements?

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Study for the NBME Immunology Test. Study with flashcards and multiple choice questions, each question includes hints and explanations. Prepare to excel!

Multiple Choice

How do live attenuated vaccines differ from inactivated vaccines in terms of booster requirements?

Explanation:
Live attenuated vaccines mimic natural infection by replicating in the body, which stimulates a robust and lasting immune response involving both B cells and T cells. This tends to produce durable protection after fewer doses. In contrast, inactivated vaccines do not replicate, so they generate a weaker and shorter-lived immune response that often relies on repeated doses (boosters) to maintain protective antibody levels. Therefore, boosters are typically required for inactivated vaccines to sustain immunity.

Live attenuated vaccines mimic natural infection by replicating in the body, which stimulates a robust and lasting immune response involving both B cells and T cells. This tends to produce durable protection after fewer doses. In contrast, inactivated vaccines do not replicate, so they generate a weaker and shorter-lived immune response that often relies on repeated doses (boosters) to maintain protective antibody levels. Therefore, boosters are typically required for inactivated vaccines to sustain immunity.

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