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Estero, FL
A 38-year-old female asked about a female:

What are some reasons a vaccine does not cause immunity? my 6yo daughter is up to date on all her vaccines but the prevnar did not seem effective. the plan is to give her a booster shot and recheck her titers. same occurred with me with the mmr.

1 doctor answer1 doctor weighed in
Dr. Robert Kwok
Pediatrics 33 years experience
Everyone's different: First, Prevnar is given to children age 6 years or above only IF there is an abnormality. In the US, normal children don't get Prevnar after reaching the 6th birthday. Then, things that might lead to a negative immunity test include: child is not immune because did not get the actual vaccine, did not respond to the vaccine, responded by the immune memory waned already, problem with the lab test...

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Last updated Aug 2, 2020

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