A cohort study at the University of California Irvine (UCI) Health, the sole academic medical center in Orange County, California, was conducted when this sixth largest US county was confronting among the highest infection rates in the Country. Investigators determined that daily HCP [health care personnel] cases of COVID-19 fell 55% (from 18 to 8) 1 week after the 2nd vaccination dose. There was an 84% reduction (3 cases) after 2 weeks and 94% (1 case) 3 weeks after full vaccination.
Vaccinations protected health care personnel during surge of patients with COVID-19
Contagion Live, July 28, 2021
July 28, 2021