Table 1. Local reactions in persons aged 16-55 years, Pfizer-BioNTech COVID-19 vaccine and Placebo; Dose 1 Dose 2; Pfizer-BioNTech Vaccine N=2291 Placebo N=2298 Pfizer-BioNTech Vaccine N=2098 Placebo N=2103; Redness a, n (%) Any: 104 (4.5) 26 (1.1) 123 (5.9) 14 (0.7) Mild: 70 (3.1) 16 (0.7) 73 (3.5) 8 (0.4) Moderate: 28 (1.2) 6 (0.3) 40 (1.9) 6 …
https://www.cdc.gov/vaccines/covid-19/info-by-product/pfizer/reactogenicity.html

