Researchers explain that, in certain individuals, the immune system may generate a more intense inflammatory response , causing a temporary reaction in the heart muscle. Even so, the vast majority of affected people recover completely with rest , medication , and clinical follow-up. Cases requiring prolonged hospitalization are rare and, in general, do not leave long-term sequelae
It is important to note that COVID-19 infection can also cause myocarditis, even more frequently than that observed after vaccination. Several studies have shown that the virus itself poses a higher risk to the heart , reinforcing the recommendation for vaccination as a comprehensive protective measure.
As scientific knowledge advanced, some countries adjusted their vaccination strategies , modifying intervals between doses or recommending specific vaccines based on age and sex, with the aim of minimizing any adverse effects. These decisions were based on solid data and continuous safety monitorin
