Limited indirect effects of an infant pneumococcal vaccination program in an aging population

PloS One
M van der LindenStephanie Perniciaro

Abstract

A general recommendation for adult pneumococcal vaccination with 23-valent polysaccharide vaccine (PPV23) for adults 60 and older has been in place in Germany since 1998, but uptake has been low. Just over a decade after the implementation of an infant pneumococcal conjugate vaccine recommendation, we examined indirect protection effects on adult invasive pneumococcal disease (IPD) in Germany. Reported IPD cases decreased in children under two years of age from 11.09 per 100,000 in 2003-2006 to 5.94 per 100,000 in 2017/18, while in adult age groups, reported IPD cases rose across the board, most dramatically in adults 60 years of age and over, from 1.64 to 10.08 cases per 100,000. PCV13-type IPD represents 31% of all cases in this age group, the lion's share of which is due to the rapid increase of serotype 3 IPD, which, by itself, has reached 2.11 reported cases per 100,000 and makes up 21% of all IPD cases in this age group. The two vaccine formulations currently in development (PCV15 and PCV20) would increase current (PCV13) coverage by 8.5% points and 28.0% points in children, while in adults coverage would increase by 10.4% points and 21.9% points, respectively. While original models predicted that indirect effects of chil...Continue Reading

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May 16, 2020·F1000Research·Charles Feldman, Ronald Anderson
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Methods Mentioned

BETA
PCR

Clinical Trials Mentioned

NCT03760146

Software Mentioned

R Foundation for Statistical Computing
Pneumoweb
Excel
epiDisplay
R

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