Pfizer admits its Covid vaccines cause a ca…

These symptoms are typically signs that the immune system is responding to the vaccine.

However, a small number of rare side effects have been identified through ongoing monitoring.

For example, cases of myocarditis—an inflammation of the heart muscle—have been observed in a small percentage of younger individuals after vaccination.

Health agencies including the Centers for Disease Control and Prevention and the World Health Organization have studied these cases carefully.

Research has shown that while the condition can occur, it remains rare and usually mild, and most patients recover quickly.