Reports of Anaphylaxis After Receipt of mRNA COVID-19 Vaccines in the US—December 14, 2020-January 18, 2021

This JAMA Insights review provides clinical details of anaphylactic reactions reported to and verified by the CDC in the first month of use of the Pfizer-BioNTech and Moderna COVID-19 vaccines in the US, December 14, 2020-January 18, 2021.