JAMA: Acute Allergic Reactions to mRNA COVID-19 Vaccines

 Research Letter

March 8, 2021

Kimberly 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. Landman, MD⁴; Paige Wickner, MD, MPH⁵

Acute Allergic Reactions to mRNA COVID-19 Vaccines | Allergy and Clinical Immunology | JAMA | JAMA Network

-  64900 employees vaccinated with first dose of covid-19 mRNA vaccine. 

-  16 cases of anaphylaxis.  All treated and all recovered. 

-   avg time of onset of anaphylaxis 17 minutes. 

-  Rate of anaphylaxis = 13 / 64,900 = 0.00025 x 100  =  0.025%