| Literature DB >> 19545935 |
Abstract
An increase in the incidence of invasive pneumococcal disease (IPD) caused by non-vaccine serotypes (NVTs) (serotype replacement) has been observed since the introduction of the seven-valent pneumococcal conjugate vaccine (PCV7), primarily in the elderly, HIV-positive adults, and children with underlying medical conditions. In children aged <5 years, only a slight increase in replacement disease due to NVTs has been observed, but the relationship of changes in serotype carriage to replacement disease is not well understood. Predominant post-PCV7 NVTs include serotypes 15, 19A, and 33F, but the increasing antibiotic resistance of 19A is of particular concern in both vaccinated and unvaccinated populations.Entities:
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Year: 2009 PMID: 19545935 DOI: 10.1016/j.vaccine.2009.06.004
Source DB: PubMed Journal: Vaccine ISSN: 0264-410X Impact factor: 3.641