On December 11, 2020, the US Food and Drug Administration (FDA) issued an Emergency Use Authorization (EUA) for the Pfizer-BioNTech coronavirus disease 2019 (COVID-19) vaccine, administered as 2 doses separated by 21 days.1 Shortly after, the Advisory Committee on Immunization Practices (ACIP) issued an interim recommendation for its use.2 Following implementation of vaccination, reports of anaphylaxis after the first dose of the Pfizer-BioNTech COVID-19 vaccine emerged.3 Anaphylaxis is a life-threatening allergic reaction that occurs rarely after vaccination, with onset typically within minutes to hours.4
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CME Disclosure Statement: Unless noted, all individuals in control of content reported no relevant financial relationships. If applicable, all relevant financial relationships have been mitigated.
Corresponding Author: Tom Shimabukuro, MD, MPH, MBA, Immunization Safety Office, Centers for Disease Control and Prevention, 1600 Clifton Rd, Atlanta, GA 30329 (email@example.com).
Published Online: January 21, 2021. doi:10.1001/jama.2021.0600
Conflict of Interest Disclosures: None reported.
Disclaimer: The findings and conclusions in this report are those of the authors and do not necessarily represent the official position of CDC or FDA. Mention of a product or company name is for identification purposes only and does not constitute endorsement by CDC or FDA.
Additional Contributions: We thank investigators from the CDC COVID-19 Response Team; the FDA Office of Biostatistics and Epidemiology, Center for Biologics Evaluation and Research; and the Clinical Immunization Safety Assessment Project.
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