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Global maternal mortality associated with SARS-CoV-2 infection: a systematic review and meta-analysis

  • Kathryn Barry
  • , Silvia Fernández-García
  • , Alya Khashaba
  • , Gabriel Ruiz-Calvo
  • , Miriam Roncal Redin
  • , Ghadir Mahmoud
  • , Magnus Yap
  • , Yasmin King
  • , Dengyi Zhou
  • , Massa Mamey
  • , Isabella Shepherd-Evans
  • , Jameela Sheikh
  • , Heidi Lawson
  • , Tania Kew
  • , Kehkashan Ansari
  • , Shruti Attarde
  • , Adeolu Banjoko
  • , Helen Fraser
  • , Megan Littmoden
  • , Tanisha Rajah
  • Kate Walker, Keelin O’Donoghue, Madelon van Wely, Elizabeth van Leeuwen, Elena Kostova, Heinke Kunst, Asma Khalil, Vanessa Brizuela, Edna Kara, Caron Rahn Kim, Anna Thorson, Olufemi T. Oladapo, Lynne Mofenson, Mercedes Bonet, Javier Zamora, John Allotey*, on behalf of the PregCOV-19 Living Systematic Review Consortium
*Corresponding author for this work
  • University of Birmingham
  • Hospital Ramon y Cajal
  • University of Nottingham
  • University College Cork
  • Amsterdam UMC - University of Amsterdam
  • Queen Mary University of London
  • Barts Health NHS Trust
  • St. George's University of London
  • World Health Organization
  • Elizabeth Glaser Pediatric AIDS Foundation
  • CIBER Center for Epidemiology and Public Health
  • University Hospitals Birmingham NHS Foundation Trust
  • Liverpool Women's NHS Foundation Trust
  • University of Liverpool

Research output: Contribution to journalArticleAcademicpeer-review

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Abstract

Background Pregnant and recently pregnant women infected with SARS-CoV-2 are at increased risk of death and serious complications than those without the infection. The extent of variation in mortality rates in pregnant women with SARS-CoV-2 infection across regions, and the causes of death are not known. We systematically reviewed all available evidence on the variation in mortality rates in pregnant women with SARS-CoV-2 infection across geographical and country income groups, and the reported cause of death. Methods We searched major databases (December 2019–January 2023) including Medline, LILACS, BIREME and Embase. We included studies that reported deaths in at least 10 consecutive pregnant or recently pregnant women with confirmed SARS-CoV-2 infection and assessed the studies’ risk of bias. We calculated the summary estimates of any cause of death as proportions with 95% CIs using a multilevel random-effects logistic regression model. Subgroup analyses were performed by geographical region and country income groups. We used International Statistical Classification of Diseases and Related Health Problems-Maternal Mortality to categorise the reported cause of death. Findings From 1 326 315 citations, we included 169 studies (319 172 women with confirmed SARSCoV-2 infection; 4253 women died). The overall rate of unspecified maternal death was 0.87% (95% CI 0.64% to 1.16%). There were significant differences between geographical regions in rates of maternal mortality, with the highest rates in Sub-Saharan Africa (3.48%; 95% CI 0.66% to 16.42%) and Latin America and the Caribbean (3.16%, 95% CI 1.53% to 6.43%). Rates of maternal mortality varied by country income groups, with the highest rates in low-income countries (4.66%, 95% CI 0.75% to 24.07%). Among women with reported cause of death, 98.6% (2,390/2,423) of deaths were attributable to COVID-19. Interpretation Rates of deaths in pregnant and recently pregnant women with SARS-CoV-2 infection vary significantly across regions and by country income groups, with the highest burden in Sub-Saharan Africa and low-income countries. COVID-19 is the main reported cause of death.
Original languageEnglish
Article numbere015815
JournalBMJ global health
Volume10
Issue number4
DOIs
Publication statusPublished - 21 Apr 2025

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

  1. SDG 3 - Good Health and Well-being
    SDG 3 Good Health and Well-being

Keywords

  • Maternal health
  • SARS

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