A large study of over 2 million individuals shows that the complication is much higher after infection than after vaccination.
This is a reassuring study for those who are worried about the risk of adverse effects associated with vaccines. Organized among over 2 million people in Israel, the study was published New England Journal of Medicine Compared with the incidence of this event in the population, the incidence of adverse events after vaccination and after infection has been compared.
Four groups were formed: two, 884,828 each, not vaccinated on one side and vaccinated on the other. In two other groups, 173,106 people were infected with SARS-COV-2 on one side and no infection on the other.
The risk of myocarditis after infection is high after vaccination
In their conclusions, the authors noted that there was a greater risk Myocardium By catching the covid rather than vaccinating. The authors found that 2.7 cases of myocarditis were more than 100,000 vaccinated people and 100,000 non-vaccinated people.
On the other hand, for every 100,000 people infected with SARS-COV-2, the study authors observed 11 more cases of myocarditis than 100,000 non-infected individuals.
The rare occurrence of myocarditis in vaccinated patients, most often young people, is one of the reasons given by some to reject the vaccine. But the study does not stop at the sign of myocarditis.
Other side effects are also being studied
The authors noted that “infection with SARS-CoV-2 significantly increases the risk for many,” such as pericarditis, arrhythmia, deep vein thrombosis, myocardial infarction, intracranial hemorrhage, and thrombocytopenia or pulmonary. Embolism.
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For every 100,000 people vaccinated, the authors of the study found 1 less case of pulmonary embolism than 100,000 people who were not vaccinated. On the other hand, for every 100,000 people infected with SARS-COV-2, the study authors observed 62 more cases of pulmonary embolism than 100,000 non-infected individuals.
However, some side effects are more severe in vaccinated individuals than in infected individuals. It is a mild side effect in the case of inflammation of the nodes (lymphadenopathy) but is very common after vaccination.
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