Health & Safety Novavax COVID-19 Vaccine 89% Effective, Except Against South African Variant 8:10pm January 28, 2021 by Joe Palca Health Medical Treatments Share URL copied to clipboard! Play Pause There was an error loading the media player. Copyright 2021 NPR. To see more, visit https://www.npr.org. 300x250 Ad More All Things Considered National Los Angeles immigration raid protests update by Scott Detrow National CEO is charged after a journalist's home is vandalized 300x250 Ad Support quality journalism, like the story above, with your gift right now. Donate