COVID-19 shots should be reformulated to target an XBB subvariant of the highly infectious omicron strain to provide the best protection during the U.S. fall and winter season, health regulators
FDA advisers recommend updating the coronavirus vaccine to target XBB washingtonpost.com - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from washingtonpost.com Daily Mail and Mail on Sunday newspapers.
A single booster seems to prevent death and hospitalization in most people, but protection from the current vaccines wanes within months. FDA experts say they need to know more from the Centers for Disease Control and Prevention.