Cited by 312SARS-CoV-2 and COVID-19 ResearchCOVID-19 Impact on ReproductionVaccine Coverage and Hesitancy

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Effectiveness of the BNT162b2 mRNA COVID-19 vaccine in pregnancy

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Dagan, Noa, Barda, Noam, Biron-Shental, Tal, Makov-Assif, Maya, Key, Calanit, Kohane, Isaac S., Hernán, Miguel A., Lipsitch, Marc, Hernandez-Diaz, Sonia, Reis, Ben Y., Balicer, Ran D.·2021·Nature Medicine

DOI 10.1038/s41591-021-01490-8

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Abstract

To evaluate the effectiveness of the BNT162b2 messenger RNA vaccine in pregnant women, we conducted an observational cohort study of pregnant women aged 16 years or older, with no history of SARS-CoV-2, who were vaccinated between 20 December 2020 and 3 June 2021. A total of 10,861 vaccinated pregnant women were matched to 10,861 unvaccinated pregnant controls using demographic and clinical characteristics. Study outcomes included documented infection with SARS-CoV-2, symptomatic COVID-19, COVID-19-related hospitalization, severe illness and death. Estimated vaccine effectiveness from 7 through to 56 d after the second dose was 96% (95% confidence interval 89-100%) for any documented infection, 97% (91-100%) for infections with documented symptoms and 89% (43-100%) for COVID-19-related hospitalization. Only one event of severe illness was observed in the unvaccinated group and no deaths were observed in either group. In summary, the BNT162b2 mRNA vaccine was estimated to have high vaccine effectiveness in pregnant women, which is similar to the effectiveness estimated in the general population.

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BNT162b2 mRNA Covid-19 Vaccine in a Nationwide Mass Vaccination Setting
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“VE for women with chronic conditions may be somewhat lower than the average VE reported in this study, as previously reported for the general population (13).”
Self-citation
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Barda, N., Dagan, N. & Balicer, R. D. BNT162b2 mRNA Covid-19 vaccine in a nationwide mass vaccination setting. Reply. N. Engl. J. Med. 384, 1970 (2021).

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Vaccination and Therapeutics
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Authors: Dagan, N., Barda, N., Biron-Shental, T., Makov-Assif, M., Key, C., Kohane, I. S., Hernán, M. A., Lipsitch, M., Hernandez-Diaz, S., Reis, B. Y., & Balicer, R. D.
Affiliations: Ben-Gurion University of the Negev (IL)
Clalit Health Services (IL)
Harvard University (US)
Boston Children's Hospital (US)
Corresponding author: Balicer, Ran D.
ORCID: Dagan, Noa
Barda, Noam
Makov-Assif, Maya
Key, Calanit
Kohane, Isaac S.
Hernán, Miguel A.
Lipsitch, Marc
Hernandez-Diaz, Sonia
Reis, Ben Y.
Balicer, Ran D.
Venue: Nature Medicine
Publisher: Springer Science and Business Media LLC
Published: 2021-09-07
Volume: 27
Issue: 10
Pages: 1693-1695
ISSN: 1078-8956 (ISSN-L)
1546-170X
DOI: 10.1038/s41591-021-01490-8
OpenAlex: W3180834485
Cited by: 312
References: 13
Citations by year: 2026: 12 · 2025: 27 · 2024: 38 · 2023: 86 · 2022: 130 · 2021: 19
FWCI: 21.68
Type: journal article
Language: en
Open access: bronze
doi.org
Licence: www.springer.com/tdm (tdm)
www.springer.com/tdm (vor)
Locations: Nature Medicine (publishedVersion)
Research Square (acceptedVersion, cc-by)
PubMed (publishedVersion)
Digital Access to Scholarship at Harvard (DASH) (Harvard University) (acceptedVersion)
Funders: Ivan and Francesca Berkowitz Family Living Laboratory at Harvard Medical School
Morris-Singer Fund
Topics: Health Sciences › Medicine › Infectious Diseases › SARS-CoV-2 and COVID-19 Research
Health Sciences › Medicine › Obstetrics and Gynecology › COVID-19 Impact on Reproduction
Social Sciences › Health › Vaccine Coverage and Hesitancy
Keywords: BNT162b2 mRNA vaccine, COVID-19 vaccines, pregnancy, vaccine effectiveness, COVID-19 pandemic, COVID-19 hospitalization, maternal immunization
MeSH terms: COVID-19, SARS-CoV-2, COVID-19 Vaccines, BNT162 Vaccine, Adolescent, Adult, Female, Humans, Pregnancy, Pregnancy Complications, Infectious, Cohort Studies, Incidence, Young Adult

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Effectiveness of the BNT162b2 mRNA COVID-19 vaccine in pregnancy

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