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Myocarditis after BNT162b2 mRNA Vaccine against Covid-19 in Israel – The New England Journal of Medicine

Background
Approximately 5.1 million Israelis had been fully immunized against coronavirus disease 2019 (Covid-19) after receiving two doses of the BNT162b2 messenger RNA vaccine (Pfizer–BioNTech) by May 31, 2021. After early reports of myocarditis during adverse events monitoring, the Israeli Ministry of Health initiated active surveillance.

Conclusions
The incidence of myocarditis, although low, increased after the receipt of the BNT162b2 vaccine, particularly after the second dose among young male recipients. The clinical presentation of myocarditis after vaccination was usually mild.

http://archive.today/2021.10.10-032642/https://www.nejm.org/doi/full/10.1056/NEJMoa2109730