With federal signing, all US adults are now eligible for a coronavirus vaccine booster

But the side-effects data, presented for the first time on Friday, provided reassurance: Of the 26 million mRNA boosters supplied in the United States, there are dozens of confirmed reports of Myocarditis and 38 other pending investigations, said Tom Shimabukuro, a CDC vaccine safety official, citing preliminary data from a vaccine safety monitoring system. The average age of ten people with confirmed myocarditis is 51. Ten have been discharged and six have recovered from symptoms, he said.