Study: COVID booster effectiveness wanes but remains strong wfmj.com - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from wfmj.com Daily Mail and Mail on Sunday newspapers.
An early look at the performance of COVID-19 booster shots during the recent omicron wave in the U.S. hinted at a decline in effectiveness, though the shots still offered strong protection against severe illness.
An early look at the performance of COVID-19 booster shots during the recent omicron wave in the U.S. hinted at a decline in effectiveness, though the shots still offered strong protection against severe illness.