Herd immunity and serotype replacement 4
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Elizabeth Miller; Nicholas J Andrews; Pauline A Waight; Mary PE Slack; Robert C
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Article
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2011
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The Lancet
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English
โ 200 KB
## Background The seven-valent pneumococcal conjugate vaccine (PCV7) has reduced vaccine-type (VT) invasive pneumococcal disease but increases in non-vaccine-type (NVT) disease have varied between countries. We assess the eff ect of the PCV7 vaccination on VT and NVT disease in England and Wales.