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Meningococcal Vaccine: What Does It Not Protect?

The meningococcal vaccine is highly effective. However, it does not protect people against meningococcal disease caused by "type B" bacteria. This type of bacteria causes one third of meningococcal cases. More than half of the cases among infants under one year of age are caused by "type B," for which no vaccine is available in the United States.
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Last reviewed by: Kristi Monson, PharmD;
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