With Federal Approvals, All U.S. Adults Now Eligible for Coronavirus Vaccine Recalls

But the side-effect data, first presented on Friday, reassured: Out of 26 million mRNA boosters administered in the United States, there have been a dozen confirmed reports of myocarditis and 38 other ongoing investigations, said Tom Shimabukuro, a CDC vaccine safety officer, citing preliminary data from a single vaccine safety monitoring system. The median age of the dozen confirmed myocarditis is 51 years. Ten were released from the hospital and six recovered from symptoms, he said.