Maternal-Infant Respiratory Syncytial Virus and Influenza A Virus Antibody Transfer in Preterm and Full-term Infants
2024

Maternal Antibody Transfer in Preterm and Full-term Infants

Sample size: 115 publication 10 minutes Evidence: moderate

Author Information

Author(s): Kalee E. Rumfelt, Mindy Pike, Jennifer E. Stolarczuk, Ava Lekander, Adam S. Lauring, Linda O. Eckert, Janet A. Englund, Emily T. Martin, Alisa B. Kachikis

Primary Institution: University of Washington

Hypothesis

How does maternal influenza and RSV vaccination affect antibody transfer to preterm and full-term infants?

Conclusion

Maternal vaccination enhances antibody transfer to infants, particularly benefiting preterm infants.

Supporting Evidence

  • Approximately 70% of pregnant persons received the influenza vaccine.
  • Preterm infants had significantly lower cord to maternal IgG transfer ratios for IAV-H3 and RSV compared to full-term infants.
  • Maternal and cord antibody concentrations were highest in the influenza-vaccinated group.

Takeaway

Moms who get vaccinated can pass important antibodies to their babies, helping keep them safe from viruses.

Methodology

Delivery samples from 115 maternal-infant pairs were analyzed for RSV and influenza antibodies using electrochemiluminescence assays.

Potential Biases

Potential bias due to reliance on self-reported vaccination status.

Limitations

Unable to document prior infections and did not follow participants for infections after birth.

Participant Demographics

Participants included pregnant individuals with singleton pregnancies, with a majority being vaccinated against influenza.

Statistical Information

P-Value

p ≤ 0.05

Statistical Significance

p ≤ 0.05

Digital Object Identifier (DOI)

10.1093/ofid/ofae723

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