People administered the Pfizer COVID-19 vaccine at a US hospital had considerably fewer symptomatic and asymptomatic infections in comparison with their unvaccinated counterparts, reported a new study. 

Published in the Journal of the American Medical Association, the study is among the first to indicate an association between COVID-19 Pfizer-BioNTech vaccination and fewer asymptomatic infections. The study included 5,217 employees at St. Jude, eligible under Tennessee state guidelines for vaccination from December 17, 2020, through March 20, 2021. Over 58% of employees were vaccinated during that period. Most workers received both vaccine doses. Vaccination was found to decrease the risk of asymptomatic and symptomatic infection by 79% in vaccinated employees compared to their unvaccinated peers, noted the investigators… (ET Healthworld – PTI, May 8, 2021)