Tweet from EricTopol at December 29, 2021 at 02:01PM

Just published @NEJM
Vaccine effectiveness (Pfizer, 2-doses) vs hospitalization was reduced from 93% (CI 90,94) during the Delta wave to 70% (CI 62,76) during the Omicron wave in a large health system in South Africa
https://t.co/AQ2zej88RB

— Eric Topol (@EricTopol)
Dec 29, 2021

from http://twitter.com/EricTopol