In December 2020, the healthcare workforce at San Diego University saw an unexpected increase in COVID-19 infections. Concurrently, this same month, one of the most ambitious vaccination campaigns ever was taking off, one which managed to inoculate 76% of the population by March 2021 and 87% by June same year. Infections saw a significant reduction…
Vaccine Efficacy against the Delta COVID-19 Variant
COVID-19 B.1.617.2 (delta) Variant, first detected in India, has contributed to a significant increase in the number of COVID cases and has inexorably spread all across the world. The relative efficacy of BNT162b2 (Pfizer–BioNTech) and ChAdOx1 nCoV-19 (AstraZeneca) vaccines against this new variant was unclear Vaccine efficacy against the delta symptomatic infection vs. the predominant…