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Indirect cohort analysis of 10-valent pneumococcal conjugate vaccine effectiveness against vaccine-type and vaccine-related invasive pneumococcal disease
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October 24 2015
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Source: Vaccine. 33(46):6145-6148
Details:
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Alternative Title:Vaccine
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Personal Author:
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Corporate Authors:
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Description:We applied the indirect cohort method to estimate effectiveness of 10-valent pneumococcal conjugate vaccine (PCV10) among young children in Brazil. Cases of invasive pneumococcal disease (IPD), i.e., Streptococcus pneumoniae, detected in normally sterile fluid identified through laboratory-based surveillance and previously enrolled in a matched case-control effectiveness study are included. We estimated PCV10 effectiveness using multivariable logistic regression comparing PCV10 vaccination among children with vaccine-type or vaccine-related IPD vs. children with non-vaccine-type disease. The adjusted effectiveness of ≥ 1 doses against vaccine-type (72.8%, 95% confidence interval [CI] [44.1, 86.7]) and vaccine-related (61.3%, 95%CI [14.5, 82.5]) IPD were similar to the effectiveness observed in the original case-control study (which required enrollment >1200 controls). We also found significant protection of ≥ 1 dose against individual vaccine serotypes (14, 6B, 23F, 18C) and against vaccine-related serotype 19A. The indirect cohort methods leverages existing surveillance is a feasible approach for evaluating pneumococcal conjugate vaccines, particularly in resource-limited settings.
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Pubmed ID:26469718
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Pubmed Central ID:PMC6859415
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Document Type:
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Funding:
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Volume:33
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Issue:46
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[PDF-209.94 KB]
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