Alliance for Pandemic Preparedness

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Tag: allergic reaction

January 22, 2021

Allergic Reactions Including Anaphylaxis After Receipt of the First Dose of Pfizer-BioNTech COVID-19 Vaccine

CDC identified 21 case reports of anaphylaxis during the administration of a reported 1,893,360 first doses of Pfizer-BioNTech COVID-19 vaccine between December 14 and 23, 2020. Of these 21 cases, four people (19%) were hospitalized and 17 (81%) were treated in emergency departments. No deaths from anaphylaxis were reported. Seventeen (81%) of 21 patients with…

Allergic Reactions Including Anaphylaxis After Receipt of the First Dose of Moderna COVID-19 Vaccine — United States, December 21, 2020–January 10, 2021

Between December 21, 2020 and January 10, 2021, monitoring by the Vaccine Adverse Event Reporting System detected ten cases of anaphylaxis after administration of a reported 4,041,396 first doses of the Moderna COVID-19 vaccine in the US. In nine cases, onset occurred within 15 minutes of vaccination. Nine of the ten cases of anaphylaxis occurred…