Research LetterMarch 8, 2021Acute Allergic Reactions to mRNA COVID-19 VaccinesKimberly G. Blumenthal, MD, MSc1; Lacey B. Robinson, MD, MPH1; Carlos A. Camargo Jr, MD, DrPH2; et alErica S. Shenoy, MD, PhD3; Aleena Banerji, MD1; Adam B. Land…