AstraZeneca, Still Unsure Of Need For COVID-19 Booster Posted byCristian Bustos July 29, 2021 Leave a comment on AstraZeneca, Still Unsure Of Need For COVID-19 Booster Pascal Soriot, CEO of AstraZeneca plc (NASDAQ:AZN), said the company still doesn’t know if a third dose of its COVID-19 vaccine will be necessary to m…