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Scientific article
English

Frequent failure of adolescent booster responses to tetanus toxoid despite infant immunization: waning of infancy-induced immune memory?

Published inVaccine, vol. 28, no. 27, p. 4356-4361
Publication date2010
Abstract

To define the capacity of a tetanus toxoid booster to reactivate infant-triggered immunity, anti-tetanus antibodies were assessed before and after boosting 162 adolescents and 219 children from Mfou (Cameroon). Among 63 adolescents with 3 recorded dose of infant DTP, 29/63 (46%) responded with a ≥ 4-fold increase of antibody titers, 35/63 (55%) reaching the 0.10UI/ml threshold. Response rates were slightly higher (62%) in children aged 10-11 years. Responders and non-responders only differed significantly in their baseline anti-tetanus antibodies. Thus, early life immune immaturity may limit the persistence of infant-induced immunity and subsequent boosters may be required for sustained protection.

Keywords
  • Adolescent
  • Antibodies, Bacterial/immunology
  • Child
  • Female
  • Humans
  • *Immunization
  • *Immunization, Secondary
  • Infant
  • Male
  • Tetanus Toxoid/*administration & dosage/*immunology
Citation (ISO format)
POSFAY BARBE, Klara et al. Frequent failure of adolescent booster responses to tetanus toxoid despite infant immunization: waning of infancy-induced immune memory? In: Vaccine, 2010, vol. 28, n° 27, p. 4356–4361. doi: 10.1016/j.vaccine.2010.04.060
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ISSN of the journal0264-410X
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