We reformulated a multiplex PCR algorithm for serotyping of pneumococcal meningitis directly on cerebrospinal fluid (CSF). Compared to established methods on isolates, CSF-based PCR had at least 80% sensitivity and 100% specificity. In regional meningitis surveillance, CSF-based PCR increased the serotype information yield from 40% of cases (isolate testing) to 90%.
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http://dx.doi.org/10.1128/JCM.01402-09 | DOI Listing |
Expert Rev Vaccines
December 2025
South Africa Medical Research Council Vaccines and Infectious Diseases Analytics Research Unit, University of the Witwatersrand, Faculty of Health Science, Johannesburg, South Africa.
Background: Due to high costs of pneumococcal conjugate vaccines (PCV), transitioning from a two (2 + 1) to a single dose (1 + 1) primary series with a booster should be considered. This study evaluated the immune response at 18 months of age following a 1 + 1 compared to a 2 + 1 schedule of 10-valent (PCV10) and 13-valent (PCV13) vaccines.
Research Design And Methods: A single-center, open-label, randomized trial conducted in Soweto, South Africa, evaluated the immunogenicity of differing dosing schedule for PCV10 and PCV13.
J Infect
January 2025
Johns Hopkins Bloomberg School of Public Health, Baltimore, MD 21205, United States.
Background: Pneumococcal conjugate vaccines (PCVs) introduced in childhood national immunization programs lowered vaccine-type invasive pneumococcal disease (IPD), but replacement with non-vaccine-types persisted throughout the PCV10/13 follow-up period. We assessed PCV10/13 impact on pneumococcal meningitis incidence globally.
Methods: The number of cases with serotyped pneumococci detected in cerebrospinal fluid and population denominators were obtained from surveillance sites globally.
Vaccine
January 2025
Beijing Center for Disease Prevention and Control, No. 16, Hepingli Middle Street, Dongcheng District, Beijing 100013, China. Electronic address:
Background: The 23-valent pneumococcal polysaccharide vaccine (PPSV23) is recommended for standalone or sequential use in the elderly in many countries to prevent pneumococcal disease, making it crucial to assess vaccine response and long-term persistence.
Purpose: We aimed to describe the trajectories of circulating antibody levels to the PPSV23 in the elderly following immunization.
Methods: Eligible individuals aged 65 to 70 years were enrolled and vaccinated with one dose of PPSV23.
Vaccine
January 2025
Section Pediatric Infectious Diseases, Laboratory of Medical Immunology, Radboud Institute for Molecular Life Sciences, Radboud Center for Infectious Diseases, Radboud University Medical Center, Nijmegen, the Netherlands.
In this study, we describe S. pneumoniae serotype distribution before and after PCV13 rollout in Tanzania. We serotyped S.
View Article and Find Full Text PDFPediatr Infect Dis J
January 2025
From the Centers for Disease Control and Prevention, Atlanta, Georgia.
Background: Children with hematologic malignancies (HMs) are at increased risk of invasive pneumococcal disease (IPD). Data on long-term IPD trends in U.S.
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