Serotype-specific serum immunoglobulin G at 18 months of age following one or two doses of a primary series of 10-valent or 13-valent pneumococcal conjugate vaccine and a booster dose at nine months of age: a randomized controlled study
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-valen...
Saved in:
| Main Authors: | , , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Taylor & Francis Group
2025-12-01
|
| Series: | Expert Review of Vaccines |
| Subjects: | |
| Online Access: | https://www.tandfonline.com/doi/10.1080/14760584.2025.2458179 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| Summary: | 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. Six hundred children were randomly assigned to six study arms (1:1:1:1:1:1). Non-inferiority was concluded when the lower limit of the 96% confidence interval of the ratio of geometric mean concentrations (GMCs) of the 1 + 1 and 2 + 1 schedules was >0.5 for at least 10 and eight of the PCV13 and PCV10 serotypes, respectively.Results GMCs in children who received the PCV13_6w + 1 and PCV13_14w + 1 schedule were non-inferior for 11 and 10 of the PCV13 serotypes, respectively, compared with the PCV13_2 + 1 arm. For PCV10, GMCs for both 1 + 1 schedules were non-inferior to a 2 + 1 schedule for nine of the PCV10 serotypes.Conclusion Transitioning to a 1 + 1 schedule should be considered for early immunization programs.Clinical trial registration www.clinicaltrials.gov identifier is NCT02943902. |
|---|---|
| ISSN: | 1476-0584 1744-8395 |