Seven U.S. male teenagers reported heart muscle inflammation after their second dose of the Pfizer-BioNTech vaccine, according to a study released on Friday, suggesting a “possible” but unproven link between the condition and the vaccine.
The research, published in the journal Pediatrics, highlighted seven cases of teenagers between 14 and 19 who developed symptoms for myocarditis days after receiving their second dose in April and May.
All reported chest pain within four days of the second shot, resolved their symptoms “rapidly” and were sent home from the hospital after two to six days.
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CDC investigates heart problems in youth who are vaccinated, read here.