The CDC is investigating whether the mRNA Covid-19 vaccine could be linked to recent cases of myocarditis, inflammation of the heart muscle.
Around a dozen cases of myocarditis have been reported after receiving the vaccine although the CDC has not yet found a link. It will likely take the CDC weeks or months to determine if there is a link.
There aren’t any known long-term effects from mild cases. During the CDC investigation, they’ll be looking for more potential cases and whether any other factors could have caused the condition.
CDC investigates possible connection between mRNA vaccine, heart inflammation
The cases generally occurred within four days of receiving the second dose of the vaccine and were most common in young and adolescent men.