About Pneumococcal vaccine

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Title Pneumococcal vaccine
Description
(from Freebase)
A pneumococcal vaccine is a vaccine against Streptococcus pneumoniae. Types include: In the USA, a heptavalent pneumococcal conjugate vaccine vaccine (PCV 7) (e.g. Prevenar) is recommended since 2000 for all children aged 2–23 months and for at-risk children aged 24–59 months. The normally 4-doses series is given at 2, 4, 6 & 12–14 months of age. Protection is good against deep pneumococcal infections (especially septicemia and meningitis). Similar 9-, 10-, and 13-valent vaccines have been tested. However, if a child is exposed to a serotype of pneumococcus that is not contained in the vaccine, he/she is not afforded any protection. This limitation, and the ability of capsular-polysaccharide conjugate vaccines to promote the spread of non-covered serotypes, has led to research into vaccines that would provide species-wide protection. Pneumococcal polysaccharide vaccine (Pneumovax is one brand) gives at least 85% protection in those under 55 years of age for five years or longer....
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