Changes in the composition of the pneumococcal population and in IPD incidence in The Netherlands after the implementation of the 7-valent pneumococcal conjugate vaccine.
Vaccine(2012)
Abstract
The implementation of nationwide pneumococcal vaccination may lead to alterations in the pneumococcal population due to selective pressure induced by the vaccine. To monitor such changes, pneumococcal isolates causing invasive pneumococcal disease (IPD) before (2004–2005, n=1154) and after (2008–2009, n=1190) the implementation of the 7-valent pneumococcal vaccine (PCV7) in 2006 in the national immunization program (NIP) of The Netherlands were characterized by molecular typing using multiple-locus variable number tandem repeat analysis (MLVA) and capsular sequence typing (CST).
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Key words
Pneumococcus,Pneumococcal conjugate vaccine,IPD incidence,Pneumococcal population,MLVA,Temporal changes,Molecular typing
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