RELATED: US sees lowest levels of new COVID-19 cases since last JuneReports of myocarditis have been mostly in adolescents and young adults, are more common in males than females, typically occur after the second dose, and show up about 4 days after vaccination.
The COVID-19 Vaccine Safety Technical Work Group discussed the issue during a meeting on May 17 and the news was first reported by the New York Times on Saturday.
The FDA approved the use of Pfizer's vaccine for children as young as 12 earlier this month following a successful trial in which more than 2,000 U.S.
adolescent volunteers were given the shot. Moderna is also seeking approval of its vaccine for adolescents, saying that its vaccine has proven to be safe and effective in.