A link with vaccination has not yet been established.
Very rare cases of heart problems in adolescents or young adults vaccinated against Covid-19 were reported this week by the Centers for Disease Prevention and Control (CDC), the main federal public health agency in the United States. United.
Reports of myocarditis, an inflammation of the heart muscle, have thus been noted in people who have received a messenger RNA vaccine such as those developed by Pfizer / BioNTech or Moderna.
Most "appear to be benign," the CDC said, saying it is monitoring the situation.
In "adolescents and young adults"
US authorities have not specified the exact number of cases or the age of those affected. They were detected mainly in "adolescents and young adults", in "the four days following" the injection. These myocarditis, which occur more often "after the second dose", affect men more than women. In addition, the number of reported myocarditis does not currently exceed the normal rate in people of this age group, according to health authorities.
At the end of April, five cases of myocarditis had been detected in France in people who had received the anti-Covid vaccine from Pfizer / BioNTech but again, the link with the injections had not been demonstrated.
Note that in the United States, the authorization of the Pfizer / BioNTech vaccine was extended to adolescents aged 12 to 15 years on May 10.
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