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Myocarditis, pericarditis remains rare after COVID-19 booster Myocarditis and pericarditis after COVID-19 vaccination is rare across demographic groups and most likely to occur in teen boys in the week after their second shot of a two-dose vaccine, according to a study.

Myocarditis and pericarditis after COVID-19 vaccination is rare across demographic groups and most likely to occur in teen boys in the week after their second shot of a two-dose vaccine, according to a study.

Nearly 4 million Americans received updated COVID boosters last week - CDC The 11.5-million figure represents only 5.3% of the 215.5 million people in the United States aged 12 or older who are eligible to receive the shots because they have completed their primary vaccination series. The shots are being administered at a slower pace than last year, when the United States initially authorized COVID boosters just for older and immunocompromised people. Around 20 million people received their third shot in the first five weeks of that vaccination campaign. YahooNews

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