Covid-19 vaccine must protect 50% of people for approval, FDA says Posted by elsewhen on Thursday July 02, 2020 @10:16AM from the arstechnica.com dept. https://arstechnica.com/science/2020/07/covid-19-vaccine-must-protect-50-of-people-for-approval-fda-says/ ( 3 comments | 3 points | on HN )