Potential impact of maternal vaccination on life-threatening respiratory syncytial virus infection during infancy

Nienke M Scheltema, Xynthia M Kavelaars, Kentigern Thorburn, Marije P Hennus, Job B van Woensel, Cornelis K van der Ent, José A M Borghans, Louis J Bont, Julia Drylewicz

Research output: Contribution to journalArticleAcademicpeer-review

Abstract

BACKGROUND: Respiratory syncytial virus (RSV) infection is an important cause of infant mortality. Here, we estimated the potential impact of maternal vaccination against RSV on life-threatening RSV infection in infants.

METHODS: We developed a mathematical model for maternal vaccine-induced antibody dynamics and used characteristics of a maternal RSV vaccine currently in phase 3 of clinical development. The model was applied to data from two cohorts of children younger than 12 months with RSV-related paediatric intensive care unit (PICU) admission in the United Kingdom (n = 370) and the Netherlands (n = 167), and a cohort of 211 children younger than 12 months with RSV-related in-hospital death from 20 countries worldwide.

RESULTS: Our model predicted that, depending on vaccine efficiency, maternal vaccination at 30 weeks' gestational age could have prevented 62-75% of RSV-related PICU admissions in the United Kingdom and 76-87% in the Netherlands. For the global mortality cohort, the model predicted that maternal vaccination could have prevented 29-48% of RSV-related in-hospital deaths. Preterm children and children with comorbidities were predicted to benefit less than (healthy) term children.

CONCLUSIONS: Maternal vaccination against RSV may substantially decrease life-threatening RSV infections in infants.

Original languageEnglish
Pages (from-to)4693-4700
Number of pages8
JournalVaccine
Volume36
Issue number31
DOIs
Publication statusPublished - 25 Jul 2018

Keywords

  • Infant mortality
  • Life-threatening infections
  • Maternal vaccination
  • Mathematical model
  • RSV

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