Health authorities are trying to determine whether heart inflammation that can occur along with many types of infections could also be a rare side effect in teens and young adults after the second dose of Covid-19 vaccine.
An article on seven US teen boys in several states, published online in Pediatrics, is among the latest reports of heart inflammation discovered after Covid-19 vaccination, though a link to the vaccine has not been proven.
The boys, aged 14 to 19, received Pfizer shots in April or May and developed chest pain within a few days. Heart imaging tests showed a type of heart muscle inflammation called myocarditis.
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