The questions facing the experts included: How often should vaccines be updated against new strains? How effective should vaccines be to get government approval? Should vaccine updates be coordinated with international health authorities?
The questions facing the U.S. experts included: How often to update the vaccines against new strains, how effective they should be to warrant approval and.
US experts wrestle with how to update COVID-19 vaccines accesswdun.com - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from accesswdun.com Daily Mail and Mail on Sunday newspapers.