Background: Seven-valent pneumococcal conjugate vaccine (PCV7) had profound public-health impacts and is considered cost-effective and potentially cost saving. Two new PCVs have been launched, a 10-valent vaccine (PCV10) and a 13-valent vaccine (PCV13). We examined public-health and economic impacts of PCV pediatric national immunization programs (NIPs) in Germany, Greece, and the Netherlands.
Methods: A decision-analytic model was developed to estimate the impact of PCV13, PCV7, and 10-valent pneumococcal conjugate vaccine (PCV10) on invasive pneumococcal disease (IPD), pneumonia (PNE), and acute otitis media (AOM). Using epidemiological data, we calculated the cases of IPD, PNE, and AOM, using country-specific incidence, serotype coverage, disease sequelae, mortality, vaccine effectiveness, indirect effects, costs, and utilities. Direct effects for PCV13- and PCV10-covered serotypes were assumed similar to PCV7. PCV13 was assumed to confer an indirect effect, while PCV10 was not. Assumptions were tested in sensitivity analyses.
Results: In a NIP, PCV13 was estimated to eliminate 31.7%, 46.4%, and 33.8% of IPD in Germany, Greece, and the Netherlands, respectively. Compared with PCV7 and PCV10, PCV13 was found to be cost-effective or cost saving in all cases when PCV13 indirect effects were included.
Conclusions: Pediatric NIPs with PCV13 in Europe are expected to have dramatic public-health impacts and be cost-effective or cost saving.
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http://dx.doi.org/10.1016/j.jinf.2011.10.015 | DOI Listing |
Background: In settings with low pneumococcal conjugate vaccine (PCV) coverage, multi-age cohort mass campaigns could increase population immunity, and fractional dosing could increase affordability. We aimed to evaluate the effect of mass campaigns on nasopharyngeal pneumococcal carriage of Pneumosil (PCV10) in children aged 1-9 years in Niger.
Methods: In this three-arm, open-label, cluster-randomised trial, 63 clusters of one to four villages in Niger were randomly assigned (3:3:1) using block randomisation to receive campaigns consisting of a single full dose of a 10-valent PCV (Pneumosil), a single one-fifth dose of Pneumosil, or no campaign.
Vaccine
January 2025
Medical Research Council Unit The Gambia at London School of Hygiene & Tropical Medicine, Banjul, the Gambia; Department of Disease Control, Faculty of Infectious and Tropical Diseases, London School of Hygiene & Tropical Medicine, London, UK; Murdoch Children's Research Institute, Melbourne, Australia; Department of Paediatrics, University of Melbourne, Australia.
Introduction: Because booster doses of pneumococcal conjugate vaccine (PCV) may be given at a similar time to yellow fever vaccine (YF), it is important to assess the immune response to YF when co-administered with PCV. This has been investigated during a reduced-dose PCV trial in The Gambia.
Methods: In this phase 4, parallel-group, cluster-randomized trial, healthy infants aged 0-10 weeks were randomly allocated to receive either a two-dose schedule of PCV13 with a booster dose co-administered with YF vaccine at age 9 months (1 + 1 co-administration) or YF vaccine administered separately at age 10 months (1 + 1 separate) or the standard three early doses of PCV13 with YF vaccine at age 9 months (3 + 0 separate).
Vaccine
January 2025
Respiratory Diseases Branch, Division of Bacterial Diseases, Centers for Disease Control and Prevention, Atlanta, United States.
Background: Streptococcus pneumoniae is an important cause of pneumonia, sepsis, and meningitis, which are leading causes of child mortality. Pneumococcal conjugate vaccines (PCVs) protect against disease and nasopharyngeal colonization with vaccine serotypes, reducing transmission to and among unvaccinated individuals. Mozambique introduced 10-valent PCV (PCV10) in 2013.
View Article and Find Full Text PDFCarbohydr Polym
March 2025
Beijing Minhai Biotechnology Co. Ltd, Beijing 102600, China. Electronic address:
Streptococcus pneumoniae is a major pathogen of bacterial pneumonia, meningitis, sepsis, and otitis media. The pathogenicity of this bacterium is largely attributed to its polysaccharide capsule, a protective layer around bacterial cell that enables bacteria to resist against host defense. Capsular polysaccharides (CPSs) of S.
View Article and Find Full Text PDFVaccine
January 2025
Department of Pediatrics, Section of Infectious Diseases and Global Health, Yale University School of Medicine, New Haven, CT, United States; Department of Epidemiology of Microbial Diseases, Yale School of Public Health, New Haven, CT, United States; Yale Institute for Global Health, Yale University, New Haven, CT, United States; Yale Center for Infection and Immunity, Yale University, New Haven, CT, United States. Electronic address:
Background: Pneumococcal conjugate vaccines (PCV) reduced invasive disease, but the overall prevalence of pneumococcal nasopharyngeal colonization among children has not changed significantly. Our knowledge of which serotypes, once colonized, hold a higher likelihood to cause invasive disease is limited.
Methods: Serotype-specific invasive capacity (IC) of Streptococcus pneumoniae was estimated using an enhanced population-based invasive pneumococcal disease (IPD) surveillance in children <7 years of age in Massachusetts and surveillance of nasopharyngeal (NP) colonization in selected Massachusetts communities in corresponding respiratory seasons.
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