Allergic Reactions Including Anaphylaxis... User D-R-AZ, in the COVID-19 Discussion subreddit, 08 Jan 2021
CDC: Vaccine Adverse Event Reporting System detected 21 cases of anaphylaxis after administration of the first dose of the Pfizer-BioNTech COVID-19 vaccine (11.1 cases per million doses). User PHealthy, in the Reddit Science subreddit, 07 Jan 2021
Allergic Reactions Including Anaphylaxis... User InquisitorCOC, in the InquisitorCOC subreddit, 06 Jan 2021
Allergic Reactions Including Anaphylaxis After Receipt of the First Dose of Pfizer-BioNTech COVID-19 Vaccine — United States, December 14–23, 2020 User dankhorse25, in the COVID-19 subreddit, 06 Jan 2021