Pfizer, Moderna COVID-19 vaccines highly effective after first shot in real-world use, U.S. study shows | Reuters
(Reuters) – COVID-19 vaccines developed by Pfizer Inc with BioNTech SE and Moderna Inc reduced risk of infection by 80% two weeks or more after the first of two shots, according to data from a real-world U.S. study released on Monday. Source: Pfizer, Moderna COVID-19 vaccines highly effective after first shot in real-world use, U.S. study shows | Reuters The article was originally published here!