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  • Title: Pneumococcal vaccine development.
    Author: Poolman JT.
    Journal: Expert Rev Vaccines; 2004 Oct; 3(5):597-604. PubMed ID: 15485339.
    Abstract:
    A 7-valent pneumococcal conjugate vaccine has demonstrated an impact on pneumococcal bacteremia in the immunized pediatric population, extending to nonimmunized adults via herd immunity. A considerable reduction of all-cause pediatric pneumonia has also been found. The impact on all-cause pediatric otitis is limited, but postlicensure data suggests stronger reductions. Higher valency conjugate vaccines are now under development (11V or more). Licensed 23-valent pneumococcal polysaccharide vaccines have been available since 1983 with a demonstrated impact on adult pneumococcal bacteremia. The burden of adult nonbacteremic pneumococcal pneumonia has remained high and efforts to develop improved adult pneumococcal vaccines have been initiated that include conjugates and pneumococcal proteins.
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