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The study only documented myocarditis and pericarditis, rare inflammatory heart conditions, in the vaccinated group, but the incidences were very rare − 27 cases per million after the first dose ...
Most cases that do occur are in male teens and young adults, usually after the second dose of a primary series of either the original version of the Pfizer-BioNTech or Moderna vaccine.
Health regulators in several countries have been investigating cases of myocarditis and pericarditis, more frequently found in young men, after a shot of Pfizer or Moderna, vaccines that are based ...
There is a rare risk of myocarditis (inflammation of the heart muscle) or pericarditis (inflammation of the membrane covering the heart) after the mRNA COVID‑19 vaccines (Moderna or Pfizer-BioNTech). The risk of myocarditis after COVID‑19 vaccination is estimated to be 0.3 to 5 cases per 100,000 persons, with the highest risk in young males ...
In October 2021, the European Medicines Agency (EMA) stated that people with "severely weakened" immune systems can receive an extra dose of either the Pfizer–BioNTech COVID-19 vaccine or the Moderna COVID-19 vaccine starting at least 28 days after their second dose.
Myocarditis after receiving a Covid vaccine is rare. Pfizer and Moderna are researching possible long-term risks for those who recovered from heart problems after vaccination.
In 1983, an incidence of myocarditis of 1 per 10 000 was reported among Finnish military personnel. [4] Among US military service members vaccinated between December 2002 and March 2003 with Dryvax smallpox vaccine 18 cases of probable myopericarditis were reported, which was an incidence of 7.8 per 100 000 over 30 days.
Cases of myocarditis were usually mild, and they occurred mostly in young males three to five days after the second dose, according to researchers in Israel. Heart risks rare after Pfizer Covid ...