BNT162b2 mRNA Covid-19 Vaccine Effectiveness among Health Care Workers

Since the introduction of Covid-19 vaccines, prioritizing vaccination of health care workers has been advocated, and data on vaccine effectiveness among health care workers in real-world settings is beginning to emerge. In our study that was conducted in an active hospital setting in a community with a high incidence of Covid-19, vaccination of health care workers with the BNT162b2 vaccine resulted in a major reduction of new cases of Covid-19 among those who received two doses of the vaccine, even when a surge of the B.1.1.7 variant was noted in up to 80% of cases.5 These findings suggest that widespread and effective vaccination among health care workers provides a safe environment, even in the presence of a high rate of SARS-CoV-2 infection in the community.