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Kinetics of pneumococcal antibodies among HIV-exposed, uninfected infants in Botswana.

Publication ,  Journal Article
Uffman, EA; Li, SH; Chen, J-L; Allen, N; Boiditswe, S; Fouda, GG; Hurst, JH; Patel, MZ; Steenhoff, AP; Cunningham, CK; Qin, E; Davenport, CA ...
Published in: Vaccine
August 5, 2022

BACKGROUND: Streptococcus pneumoniae is a leading cause of severe infections among children. Despite vaccination, HIV-exposed, uninfected (HEU) children have a higher incidence of invasive pneumococcal disease than HIV-unexposed, uninfected (HUU) children. We sought to compare the immunogenicity of 13-valent pneumococcal conjugate vaccine (PCV-13) in HEU and HUU infants. METHODS: We conducted a prospective cohort study of 134 mother-infant dyads in Botswana. Infants received PCV-13 doses at 2, 3, and 4 months through routine clinical care. We measured IgG antibodies specific to vaccine serotypes in sera collected from infants at 0, 5, and 12 months of age. We calculated the proportion of infants with protective IgG levels (≥0.35 µg/mL) to specific pneumococcal serotypes. RESULTS: At birth, fewer than half of infants had protective IgG levels to serotypes 1 (38%), 3 (46%), 4 (33%), 5 (23%), 6B (40%), 7F (44%), 9 V (44%), and 23F (46%). Compared to HUU infants (n = 97), HEU infants (n = 37) had lower antibody concentrations at birth to serotypes 5 (p = 0.046) and 19A (p = 0.008) after adjustment for maternal age and infant birth weight. More than 80% of HEU and HUU infants developed protective antibody levels to each of the 13 vaccine serotypes following PCV-13 vaccination. Median concentrations of antibodies to pneumococcal serotypes declined by 55-93% between 5 and 12 months of age, with fewer than half of infants having protective antibody levels to serotypes 1 (47%), 3 (28%), 9 V (44%), 18C (24%), and 23F (49%) at 12 months of age. CONCLUSIONS: Both HEU and HUU infants developed protective antibody responses to PCV-13 administered in a 3 + 0 schedule. However, antibody concentrations to many pneumococcal serotypes waned substantially by 12 months of age, suggesting that a PCV-13 booster dose in the second year of life may be needed to maintain protective pneumococcal antibody levels in older infants and young children.

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Published In

Vaccine

DOI

EISSN

1873-2518

Publication Date

August 5, 2022

Volume

40

Issue

33

Start / End Page

4764 / 4771

Location

Netherlands

Related Subject Headings

  • Virology
  • Vaccines, Conjugate
  • Prospective Studies
  • Pneumococcal Vaccines
  • Pneumococcal Infections
  • Kinetics
  • Infant, Newborn
  • Infant
  • Immunoglobulin G
  • Humans
 

Citation

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Uffman, E. A., Li, S. H., Chen, J.-L., Allen, N., Boiditswe, S., Fouda, G. G., … Kelly, M. S. (2022). Kinetics of pneumococcal antibodies among HIV-exposed, uninfected infants in Botswana. Vaccine, 40(33), 4764–4771. https://doi.org/10.1016/j.vaccine.2022.06.059
Uffman, Emilie A., Shuk Hang Li, Jui-Lin Chen, Noel Allen, Sefelani Boiditswe, Genevieve G. Fouda, Jillian H. Hurst, et al. “Kinetics of pneumococcal antibodies among HIV-exposed, uninfected infants in Botswana.Vaccine 40, no. 33 (August 5, 2022): 4764–71. https://doi.org/10.1016/j.vaccine.2022.06.059.
Uffman EA, Li SH, Chen J-L, Allen N, Boiditswe S, Fouda GG, et al. Kinetics of pneumococcal antibodies among HIV-exposed, uninfected infants in Botswana. Vaccine. 2022 Aug 5;40(33):4764–71.
Uffman, Emilie A., et al. “Kinetics of pneumococcal antibodies among HIV-exposed, uninfected infants in Botswana.Vaccine, vol. 40, no. 33, Aug. 2022, pp. 4764–71. Pubmed, doi:10.1016/j.vaccine.2022.06.059.
Uffman EA, Li SH, Chen J-L, Allen N, Boiditswe S, Fouda GG, Hurst JH, Patel MZ, Steenhoff AP, Cunningham CK, Qin E, Davenport CA, Kelly MS. Kinetics of pneumococcal antibodies among HIV-exposed, uninfected infants in Botswana. Vaccine. 2022 Aug 5;40(33):4764–4771.
Journal cover image

Published In

Vaccine

DOI

EISSN

1873-2518

Publication Date

August 5, 2022

Volume

40

Issue

33

Start / End Page

4764 / 4771

Location

Netherlands

Related Subject Headings

  • Virology
  • Vaccines, Conjugate
  • Prospective Studies
  • Pneumococcal Vaccines
  • Pneumococcal Infections
  • Kinetics
  • Infant, Newborn
  • Infant
  • Immunoglobulin G
  • Humans