A CDC report indicated that there were 21 cases of anaphylaxis (severe allergic reactions) out of 1,893,360 people who had received first doses of the Pfizer-BioNTech Covid-19 vaccine.
A CDC report indicated that there were 21 cases of anaphylaxis (severe allergic reactions) out of 1,893,360 people who had received first doses of the Pfizer-BioNTech Covid-19 vaccine.