Volume 34, Issue 7 e70180
ORIGINAL ARTICLE

How COVID-19 Treatment in Pregnancy Reflects Healthcare Utilization During a Pandemic: A Two-Stage Individual Participant Data Meta-Analysis Combining Case-Based Registries

Emeline Maisonneuve

Corresponding Author

Emeline Maisonneuve

Materno-Fetal and Obstetrics Research Unit, Department “Femme-Mère-Enfant”, University Hospital, Lausanne, Switzerland

Institute of Primary Health Care (BIHAM), University of Bern, Bern, Switzerland

Graduate School for Health Sciences (GHS), University of Bern, Bern, Switzerland

Obstetrics Department, Zürich University Hospital, Zürich, Switzerland

Correspondence:

Emeline Maisonneuve ([email protected])

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Odette De Bruin

Odette De Bruin

Department of Data Science and Biostatistics, Julius Global Health, University Medical Center Utrecht (UMCU), Utrecht, the Netherlands

Department of Obstetrics, Wilhelmina Children's Hospital, University Medical Center Utrecht (UMCU), Utrecht, the Netherlands

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Guillaume Favre

Guillaume Favre

Materno-Fetal and Obstetrics Research Unit, Department “Femme-Mère-Enfant”, University Hospital, Lausanne, Switzerland

Department of Obstetrics and Gynecology, Riviera-Chablais Hospital, Rennaz, Switzerland

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Erin Oakley

Erin Oakley

Department of Global Health, The George Washington University Milken Institute School of Public Health, Washington, DC, USA

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Jenny Yeon Hee Kim

Jenny Yeon Hee Kim

Department of Global Health, The George Washington University Milken Institute School of Public Health, Washington, DC, USA

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Fouzia Farooq

Fouzia Farooq

Department of Global Health, The George Washington University Milken Institute School of Public Health, Washington, DC, USA

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Nouf Al-Fadel

Nouf Al-Fadel

Saudi Food and Drug Authority, Riyadh, Saudi Arabia

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Abdulaali Almutairi

Abdulaali Almutairi

Saudi Food and Drug Authority, Riyadh, Saudi Arabia

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Maria del Mar Gil

Maria del Mar Gil

Hospital Universitario de Torrejón, Madrid, Spain

Obstetrics and Gynecology Department, Hospital Universitario La Paz, Madrid, Spain

School of Medicine, Universidad Francisco de Vitoria, Madrid, Spain

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Irene Fernandez Buhigas

Irene Fernandez Buhigas

Hospital Universitario de Torrejón, Madrid, Spain

School of Medicine, Universidad Francisco de Vitoria, Madrid, Spain

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Silvia Visentin

Silvia Visentin

University of Padova, Padova, Italy

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Erich Cosmi

Erich Cosmi

University of Padova, Padova, Italy

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Fernanda Surita

Fernanda Surita

Department of Obstetrics and Gynecology, Universidade Estadual de Campinas (UNICAMP), Campinas, Brazil

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Renato T. Souza

Renato T. Souza

Department of Obstetrics and Gynecology, Universidade Estadual de Campinas (UNICAMP), Campinas, Brazil

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José G. Cecatti

José G. Cecatti

Department of Obstetrics and Gynecology, Universidade Estadual de Campinas (UNICAMP), Campinas, Brazil

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Maria Laura Costa

Maria Laura Costa

Department of Obstetrics and Gynecology, Universidade Estadual de Campinas (UNICAMP), Campinas, Brazil

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Jose Sanin-Blair

Jose Sanin-Blair

Universidad Pontificia Bolivariana, Fundared-Materna, Medellín, Colombia

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Jorge E. Tolosa

Jorge E. Tolosa

Universidad Pontificia Bolivariana, Fundared-Materna, Medellín, Colombia

St. Luke's University Health Network, Bethlehem, PA, USA

Oregon Health & Science University, Oregon, USA

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Eran Hadar

Eran Hadar

Helen Schneider Hospital for Women, Rabin Medical Center, and the Faculty of Medical and Health Sciences, Tel-Aviv University, Tel Aviv, Israel

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Anna Goncé

Anna Goncé

Maternal-Fetal Medicine Department, BCNatal—Fetal Medicine Research Center, Hospital Clínic and Hospital Sant Joan de Déu, Universitat de Barcelona, Barcelona, Spain

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Christophe Poncelet

Christophe Poncelet

Department of Obstetrics and Gynecology, Hôpital NOVO Site de Pontoise, Cergy-Pontoise, France

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Fabienne Forestier

Fabienne Forestier

Department of Obstetrics and Gynecology, Hôpital NOVO Site de Pontoise, Cergy-Pontoise, France

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Thibaud Quibel

Thibaud Quibel

Department of Obstetrics, Maternité Poissy Saint Germain, Poissy, France

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Begoña Martinez de Tejada

Begoña Martinez de Tejada

Obstetrics Division, Department of Pediatrics, Gynecology, and Obstetrics, Geneva University Hospitals, and Faculty of Medicine, Geneva, Switzerland

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Béatrice Eggel-Hort

Béatrice Eggel-Hort

Materno-Fetal and Obstetrics Research Unit, Department “Femme-Mère-Enfant”, University Hospital, Lausanne, Switzerland

Department of Obstetrics, Wilhelmina Children's Hospital, University Medical Center Utrecht (UMCU), Utrecht, the Netherlands

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Romina Capoccia Brugger

Romina Capoccia Brugger

Department of Obstetrics and Gynecology, RHNE, Neuchâtel, Switzerland

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Daniel Surbek

Daniel Surbek

Department of Obstetrics and Feto-Maternal Medicine, University Hospital of Bern, University of Bern, Bern, Switzerland

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Luigi Raio

Luigi Raio

Department of Obstetrics and Feto-Maternal Medicine, University Hospital of Bern, University of Bern, Bern, Switzerland

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Anda-Petronela Radan

Anda-Petronela Radan

Department of Obstetrics and Feto-Maternal Medicine, University Hospital of Bern, University of Bern, Bern, Switzerland

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Monya Todesco-Bernasconi

Monya Todesco-Bernasconi

Department of Obstetrics and Gynecology, Cantonal Hospital Aarau, Aarau, Switzerland

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Cécile Monod

Cécile Monod

Department of Obstetrics and Gynecology, University Hospital Basel, Basel, Switzerland

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Leonard Schäffer

Leonard Schäffer

Division of Obstetrics, Baden Cantonal Hospital, Baden, Switzerland

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Anett Harnadi

Anett Harnadi

Division of Obstetrics, Baden Cantonal Hospital, Baden, Switzerland

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Sayed Hamid Mousavi

Sayed Hamid Mousavi

Medical Research Center, Kateb University, Kabul, Afghanistan

Department of Research, Afghanistan National Charity Organization for Special Diseases (ANCOSD), Kabul, Afghanistan

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Diogo Ayres-de-Campos

Diogo Ayres-de-Campos

Department of Obstetrics and Gynecology, Medical School, University of Lisbon; Santa Maria University Hospital, Lisbon, Portugal

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Léo Pomar

Léo Pomar

Materno-Fetal and Obstetrics Research Unit, Department “Femme-Mère-Enfant”, University Hospital, Lausanne, Switzerland

School of Health Sciences (HESAV), University of Applied Sciences and Arts Western Switzerland, Lausanne, Switzerland

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Joanna Sichitiu

Joanna Sichitiu

Materno-Fetal and Obstetrics Research Unit, Department “Femme-Mère-Enfant”, University Hospital, Lausanne, Switzerland

Department of Obstetrics and Fetal Medicine, Necker-Enfants Malades Hospital, Paris, France

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Laurent J. Salomon

Laurent J. Salomon

Department of Obstetrics and Fetal Medicine, Necker-Enfants Malades Hospital, Paris, France

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Yves Ville

Yves Ville

Department of Obstetrics and Fetal Medicine, Necker-Enfants Malades Hospital, Paris, France

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Andrea Papadia

Andrea Papadia

Department of Gynecology and Obstetrics, Ente Ospedaliero Cantonale, Lugano, Switzerland

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Marie-Claude Rossier

Marie-Claude Rossier

Department of Obstetrics and Gynecology, Riviera-Chablais Hospital, Rennaz, Switzerland

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Lavinia Schuler-Faccini

Lavinia Schuler-Faccini

Departamento de Genética, Hospital de Clinicas de Porto Alegre, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil

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Natalya Goncalves Pereira

Natalya Goncalves Pereira

Department of Obstetrics and Neonatology, Hospital e Maternidade Sepaco, São Paulo, Brazil

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Adolfo Etchegaray

Adolfo Etchegaray

Fetal Medicine Unit, Hospital Universitario Austral, Buenos Aires, Argentina

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Albaro Jose Nieto-Calvache

Albaro Jose Nieto-Calvache

Departamenteo de Ginecologia y Obstetricia, Fundación Valle del Lili, Cali, Colombia

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Michael Geary

Michael Geary

Department of Obstetrics and Gynecology, Rotunda Hospital, Dublin, Ireland

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Javiera Fuenzalida

Javiera Fuenzalida

Maternal-Fetal Medicine, Department of Obstetrics, Escuela de Medicina, Pontificia Universidad Católica de Chile, Santiago, Chile

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Claudia Grawe

Claudia Grawe

Department of Obstetrics and Gynecology, Stadtspital Triemli, Zürich, Switzerland

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Albert I. Ko

Albert I. Ko

Department of Epidemiology of Microbial Diseases, Yale School of Public Health, New Haven, USA

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Silke Johann

Silke Johann

Department of Gynecology and Obstetrics, Hospital of the Upper Valais, Visp, Switzerland

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Marco De Santis

Marco De Santis

Telefono Rosso, Teratology Information Service, Fondazione Policlinico Universitario Agostino Gemelli IRCCS, Roma, Italy

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Cora Alexandra Voekt

Cora Alexandra Voekt

Department of Obstetrics, Grabs Hospital, Grabs, Switzerland

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Najeh Hcini

Najeh Hcini

West French Guiana Hospital Center, University of French Guiana, Saint Laurent du Maroni, French Guiana

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Karin Nielsen-Saines

Karin Nielsen-Saines

Division of Infectious Diseases, Department of Pediatrics, David Geffen UCLA School of Medicine, Los Angeles, CA, USA

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Charles Garabedian

Charles Garabedian

Department of Obstetrics, CHU Lille, Univ Lille, ULR 2694-METRICS, Lille, France

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Loïc Sentilhes

Loïc Sentilhes

Department of Obstetrics and Gynecology, Bordeaux University Hospital, Bordeaux, France

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Otto H. May Feuerschuette

Otto H. May Feuerschuette

Departamento de Ginecologia e Obstetrícia, Hospital Universitário Polydoro Ernani de São Thiago, HU-UFSC, Florianópolis, Brazil

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Grit Vetter

Grit Vetter

Department of Obstetrics, Kantonsspital Baselland, Liestal, Switzerland

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Manggala Pasca Wardhana

Manggala Pasca Wardhana

Obstetrics and Gynecology Department, Faculty of Medicine, Universitas Airlangga—Dr. Soetomo Academic General Hospital, Surabaya, Indonesia

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Irida Dajti

Irida Dajti

Department of Obstetrics Gynecology, “Koco Gliozheni’ University Hospital, Tirana, Albania

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Kitty W. M. Bloemenkamp

Kitty W. M. Bloemenkamp

Department of Obstetrics, Wilhelmina Children's Hospital, University Medical Center Utrecht (UMCU), Utrecht, the Netherlands

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Satu J. Siiskonen

Satu J. Siiskonen

Division of Pharmacoepidemiology and Clinical Pharmacology, Utrecht Institute for Pharmaceutical Sciences, Utrecht University, Utrecht, the Netherlands

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Emily R. Smith

Emily R. Smith

Department of Global Health, The George Washington University Milken Institute School of Public Health, Washington, DC, USA

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David Baud

David Baud

Materno-Fetal and Obstetrics Research Unit, Department “Femme-Mère-Enfant”, University Hospital, Lausanne, Switzerland

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Alice Panchaud

Alice Panchaud

Institute of Primary Health Care (BIHAM), University of Bern, Bern, Switzerland

Service of Pharmacy, Lausanne University Hospital and University of Lausanne, Lausanne, Switzerland

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Miriam C. J. M. Sturkenboom

Miriam C. J. M. Sturkenboom

Department of Data Science and Biostatistics, Julius Global Health, University Medical Center Utrecht (UMCU), Utrecht, the Netherlands

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First published: 16 July 2025

Funding: This study is part of the CONSIGN project funded by the European Medicines Agency (EMA) (SC04, FWC EMA/2018/28/PE, Lot 4). The participating sites had different funding to allow the primary data collection. COVI-PREG has been funded by the Swiss Federal Office for Public Health and the Lausanne University Hospital foundation. The George Washington University sequential prospective meta-analysis is funded by the Bill & Melinda Gates Foundation (INV-022057 to Emily Smith) (this doesn't include the funding for participating countries).

Alice Panchaud and Miriam C.J.M. Sturkenboom equally contributed to this study.

ABSTRACT

Purpose

To describe an international response to the COVID-19 pandemic by estimating the prevalence of medication use for COVID-19 treatment in pregnancy, stratified by hospitalization, trimester of pregnancy, and country.

Methods

We conducted a two-stage individual participant data meta-analysis of proportions from primary data on medications used to treat COVID-19 during pregnancy. A common data model was developed to pool the data from single-country and international registries. Data from pregnant individuals with COVID-19 between February 2020 and October 2022 were included in study platforms across 9 data sources. Patient information was abstracted from medical records.

Results

Among 24 937 pregnant individuals, the pooled prevalences of individuals receiving medications to treat COVID-19 were: 34.7% heparin, 9.8% antibiotics, 4.9% corticosteroids, 2.2% antivirals, 0.8% antimalarials, 0.3% convalescent plasma, 0.2% immunosuppressants, and 0.02% monoclonal antibodies. Prevalence of medication use was higher in hospitalized individuals than in non-hospitalized individuals: 58.4% versus 17.9% for heparin, 26.9% versus 5.7% for antibiotics, 17.5% versus 1.3% for corticosteroids, 10.3% versus 0.3% for antivirals, and 4.5% versus 0.1% for antimalarials. The prevalence of corticosteroid use was lower in the first trimester (0.1%) compared with the second (7.2%) and third (4.9%) trimesters of pregnancy. The prevalence of medications differed widely across countries.

Conclusion

Medication to treat COVID-19 was more frequently used in pregnant individuals hospitalized for COVID-19. Corticosteroids were used less in the first trimester of pregnancy. The differences in use between countries could reflect differences in the clinical management and access to medications for this population at risk of severe disease.

Conflicts of Interest

Begoña Martinez de Tejada received consultancy fees from Exeltis and Effik about medication for nausea and vomiting during pregnancy. All other authors declare no conflicts of interest.

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