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Prevalence of Pertussis Antibodies in Maternal Delivery, Cord, and Infant Serum

Healy, C. Mary, Munoz, Flor M., Rench, Marcia A., Halasa, Natasha B., Edwards, Kathryn M., Baker, Carol J.·2004·The Journal of Infectious Diseases

Abstract

BACKGROUND: Passively acquired maternal antibodies protect infants from many pathogens. With increasing reports of infant pertussis, we evaluated pertussis antibodies in maternal-infant paired sera from 1999-2000. METHODS: Antibodies to pertussis toxin (PT), filamentous hemagglutinin (FHA), and fimbrial proteins (FIM) were measured by validated IgG-specific enzyme-linked immunosorbant assay (ELISA) in 64 maternal-umbilical cord serum pairs and in 61 of 64 infant sera. Geometric mean concentrations (GMCs) of pertussis antibodies and cord : maternal GMC ratios were calculated. RESULTS: Mean maternal age and gestation were 29.7 years (range, 19-42) and 39.3 weeks (range, 35.6-40.9), and 81% of mothers were white. GMCs of maternal antibodies at delivery (ELISA units/mL) were 2.4 for PT, 6.9 for FHA, and 13 for FIM. Cord GMCs were 169%, 178%, and 157% of maternal delivery values for PT, FHA, and FIM, respectively, demonstrating active placental transfer (P<.001). Pertussis-specific IgG values for each antigen decayed to below the threshold of detection by age 2 months. CONCLUSIONS: Despite efficient placental transfer, low maternal pertussis antibody levels and their rapid decay in infant sera leave infants with little humoral protection against pertussis. These data support the rationale for maternal or neonatal immunization, with acellular pertussis vaccines, to prevent life-threatening pertussis in early infancy.

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Metadata

Authors
Healy, C. M., Munoz, F. M., Rench, M. A., Halasa, N. B., Edwards, K. M., & Baker, C. J.
Venue
The Journal of Infectious Diseases
Published
2004-07-15
Volume
190
Issue
2
Pages
335-340
ISSN
  • 0022-1899 (ISSN-L)
  • 1537-6613
OpenAlex
W2146261518
Cited by
229
References
1
FWCI
7.09
Type
journal article
Language
en
Open access
closed

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CoChat. (2026). Citation check: Prevalence of Pertussis Antibodies in Maternal Delivery, Cord, and Infant Serum. https://app.cochat.ai/papers/10.1086/421033
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Healy, C. M., Munoz, F. M., Rench, M. A., Halasa, N. B., Edwards, K. M., & Baker, C. J. (2004). Prevalence of Pertussis Antibodies in Maternal Delivery, Cord, and Infant Serum. The Journal of Infectious Diseases. https://doi.org/10.1086/421033

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