Tweet from EricTopol at March 20, 2022 at 11:46AM

They’ve worked remarkably well vs severe disease, with a 3rd shot that restored effectiveness at ~95% vs hospitalization and death.
But the virus has continued to evolve, the antigenic distance between Omicron BA.1 and BA.2 is as far as Beta to Gamma. https://t.co/n7sRejU5Fg

— Eric Topol (@EricTopol)
Mar 20, 2022

from http://twitter.com/EricTopol