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In the year 2000, a heptavalent pneumococcal conjugate vaccine (PCV7) was licensed and recommended for routine immunization of infants in the USA. During the following years, a number of studies documented the impact of this immunization program on rates of invasive pneumococcal disease, pneumonia and otitis media. This article aims to summarize current evidence on the population-based impact of this infant immunization program in the USA.
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Grijalva et al. (2008) studied this question.
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