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Healthcare workers (HCWs) were among the earliest recipients of the mRNA COVID-19 vaccines. Now we're seeing data from several healthcare systems on the vaccines' real-life impact.
In a study from Israel, weekly incidence of COVID-19 among vaccinated HCWs began to fall starting about 2 weeks after the first dose of the BNT162b2 (Pfizer) vaccine then continued to decline and remained low after the second dose. This reduction occurred even as the B.1.1.7 variant became the dominant lineage in Israel.
In a study of HCWs at University of Texas Southwestern between December 15, 2020, and January 28, 2021, infections occurred in 2.61% of nonvaccinated employees, 1.82% of partially vaccinated employees, and only 0.05% of fully vaccinated employees; …