title: Impact of 10- and 13-valent pneumococcal conjugate vaccines on incidence of invasive pneumococcal disease in children aged under 16 years in Germany, 2009 to 2012.
abstract: We assessed the impact of 10-valent and 13-valent pneumococcal vaccines (PCV10 and PCV13), which were introduced in Germany in 2009, on the incidence of meningitis and non-meningitis invasive pneumococcal disease (IPD) in children aged under 16 years in a population previously vaccinated with a seven-valent vaccine (PCV7). Surveillance of IPD (isolation of Streptococcus pneumonia from a normally sterile body site) is based on data from two independent reporting sources: hospitals and laboratories. IPD incidence was estimated by capture-recapture analysis. Incidence rate ratios (IRRs) were calculated for 2009 and 2012, thus comparing pre- and post-PCV10 and PCV13 data. IPD incidence caused by serotypes included in PCV13 decreased in all age and diagnosis groups. A rise in non-vaccine serotype incidence was seen only in children aged under two years. The overall impact varied by age group and infection site: for meningitis IPD in children aged under 2, 2-4 and 5-15 years, incidence changed by 3% (95% CI: -31 to 52), -60% (95% CI: -81 to -17) and -9% (95% CI: -46 to 53), respectively. A more pronounced incidence reduction was observed for non-meningitis IPD: -30% (95% CI: -46 to -7), -39% (95% CI: -54 to -20) and -83% (95% CI: -89 to -73) in children aged under 2, 2-4 and 5-15 years, respectively. A higher tropism of the additional serotypes for non-meningitis IPD may be a potential explanation. The heterogeneous findings emphasise the need for rigorous surveillance
authors: Ludwig-Maximilians-University of Munich, Institute of Social Paediatrics and Adolescent Medicine, Munich, Germany.
authors: S
authors: S
authors: Weiss
authors: G
authors: G
authors: Falkenhorst
authors: M
authors: M
authors: van der Linden
authors: M
authors: M
authors: Imohl
authors: R
authors: R
authors: von Kries
mesh_terms: D000293:Adolescent; D002648:Child; D002675:Child, Preschool; D005260:Female; D005858:Germany / Q000453:epidemiology; D006801:Humans; D015994:Incidence; D007223:Infant; D007231:Infant, Newborn; D008297:Male; D008586:Meningitis, Pneumococcal / Q000453:epidemiology* / Q000517:prevention & control*; D011008:Pneumococcal Infections / Q000453:epidemiology* / Q000517:prevention & control*; D022242:Pneumococcal Vaccines / Q000008:administration & dosage / Q000276:immunology*; D011159:Population Surveillance; D016896:Treatment Outcome; D014611:Vaccination / Q000706:statistics & numerical data; D018074:Vaccines, Conjugate / Q000008:administration & dosage
chemical_list: C586648:10-valent pneumococcal conjugate vaccine; C538862:13-valent pneumococcal vaccine; D022242:Pneumococcal Vaccines; D018074:Vaccines, Conjugate