Research Alert

What The Study Did:
This JAMA Insights review provides clinical details of anaphylactic reactions reported to and verified by the Centers for Disease Control and Prevention in the first week of use of the Pfizer-BioNTech COVID-19 vaccine in the United States.

Tom Shimabukuro, M.D., M.P.H., M.B.A., of the CDC in Atlanta, is the corresponding author.

To access the embargoed study:  
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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.