AI Article Synopsis
- Immunization of pregnant women with a Group B Streptococcus (GBS) vaccine could help protect infants from severe GBS infections.
- Researchers studied two vaccine formulations: a pentavalent version and monovalent versions targeting five GBS serotypes.
- Results showed that the pentavalent vaccine with an aluminum phosphate adjuvant led to higher immune responses compared to the version without the adjuvant, suggesting it could be a promising option for future vaccine development.
Article Abstract
Immunization of pregnant women with Group B (GBS) capsular polysaccharide (CPS) conjugate vaccine (CV) could protect young infants against invasive GBS disease. We evaluated the immunogenicity of investigational five GBS monovalent (serotypes Ia, Ib, II, III, and V) CPS-tetanus toxoid (TT)-CV with adjuvant and GBS pentavalent CPS-TT-CV with adjuvant (GBS5-CV-adj) and without adjuvant (GBS5-CV-no-adj), in Balb/c mice. Aluminum phosphate was the adjuvant in the formulations, where included. The homotypic immunoglobulin G (IgG) geometric mean concentration (GMC) and opsonophagocytic activity (OPA) geometric mean titer (GMT) did not differ after the third dose of the GBS5-CV-adj vaccine compared with the monovalent counterparts for all five serotypes. The GBS5-CV-adj induced higher post-vaccination serotype-specific IgG GMCs and OPA GMTs compared to GBS5-CV-no_adj. The GBS5-CV with and without adjuvant should be considered for further development as a potential vaccine for pregnant women to protect their infants against invasive GBS disease.
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Source |
|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC10415928 | PMC |
| http://dx.doi.org/10.1016/j.isci.2023.107380 | DOI Listing |
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