Estimated impact of maternal vaccination on global paediatric influenzarelated in-hospital mortality: A retrospective case series

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dc.contributor.authorLowensteyn, Yvette N.
dc.contributor.authorNairb, Harish
dc.contributor.authorNunes, Marta C.
dc.contributor.authorRoessel, Ichelle van
dc.contributor.authorVernooij, Femke S.
dc.contributor.authorWillemsen, Joukje
dc.contributor.authorMazur, Natalie I.
dc.contributor.authorBont, Louis J.
dc.contributor.authorFLU GOLD study group
dc.contributor.authorDíaz, Franco
dc.date.accessioned2021-12-09T16:41:20Z
dc.date.available2021-12-09T16:41:20Z
dc.date.issued2021
dc.description.abstractBackground Influenza virus infection is an important cause of under-five mortality. Maternal vaccination protects children younger than 3 months of age from influenza infection. However, it is unknown to what extent paediatric influenza-related mortality may be prevented by a maternal vaccine since global age-stratified mortality data are lacking. Methods We invited clinicians and researchers to share clinical and demographic characteristics from children younger than 5 years who died with laboratory-confirmed influenza infection between January 1, 1995 and March 31, 2020. We evaluated the potential impact of maternal vaccination by estimating the number of children younger than 3 months with in-hospital influenza-related death using published global mortality estimates. Findings We included 314 children from 31 countries. Comorbidities were present in 166 (53%) children and 41 (13%) children were born prematurely. Median age at death was 8·6 (IQR 4·5–16·6), 11·5 (IQR 4·3–24·0), and 15·5 (IQR 7·4–27·0) months for children from low- and lower-middle-income countries (LMICs), upper-middle-income countries (UMICs), and high-income countries (HICs), respectively. The proportion of children younger than 3 months at time of death was 17% in LMICs, 12% in UMICs, and 7% in HICs. We estimated that 3339 annual influenza-related in-hospital deaths occur in the first 3 months of life globally. Interpretation In our study, less than 20% of children is younger than 3 months at time of influenza-related death. Although maternal influenza vaccination may impact maternal and infant influenza disease burden, additional immunisation strategies are needed to prevent global influenza-related childhood mortality. The missing data, global coverage, and data quality in this study should be taken into consideration for further interpretation of the results.es
dc.identifier.citationYvette N Löwensteyn, Harish Nair, Marta C Nunes, Ichelle van Roessel, Femke S Vernooij, Joukje Willemsen, Louis J Bont, Natalie I Mazur. Estimated impact of maternal vaccination on global paediatric influenza-related in-hospital mortality: A retrospective case series. In: EClinicalMedicine, Volume 37, 2021, 100945, https://doi.org/10.1016/j.eclinm.2021.100945.es
dc.identifier.urihttps://doi.org/10.1016/j.eclinm.2021.100945.es
dc.identifier.urihttp://hdl.handle.net/11447/5210
dc.language.isoenes
dc.subjectMaternal vaccinationes
dc.subjectImpactes
dc.subjectPaediatric influenzaes
dc.titleEstimated impact of maternal vaccination on global paediatric influenzarelated in-hospital mortality: A retrospective case serieses
dc.typeArticlees
dcterms.sourceEClinicalMedicinees

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