Estimating COVID-19 Infections, Hospitalizations, Deaths After US Vaccination Campaigns

JAMA Network Open


Media advisory: The full study is linked to this news release.

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About JAMA Network Open: JAMA Network Open is the new online-only open access general medical journal from the JAMA Network. On weekdays, the journal publishes peer-reviewed clinical research and commentary in more than 40 medical and health subject areas. Every article is free online from the day of publication.


What The Study Did: The findings of this simulation model suggest that the U.S. COVID-19 vaccination program was associated with an estimated reduction in total hospitalizations and deaths by nearly half during the first six months of 2021.

Authors: Alison P. Galvani, Ph.D., of the Yale School of Public Health in New Haven, Connecticut, is the corresponding author.



Editor’s Note: Please see the article for additional information, including other authors, author contributions and affiliations, conflict of interest and financial disclosures, and funding and support.

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