Heart inflammation has been identified as an “extremely rare” side-effect of both the Pfizer and Moderna Covid vaccines.
Researchers found that both inflammation of the heart muscle, known as myocarditis, and inflammation of the heart’s fluid-filled sac, known as pericarditis, have occurred particularly in men under 40 following their second dose.
It has led to people in Wales being advised to not exercise in the 48 hours following their second dose of the Pfizer jab. However the advice remains that the benefits of getting vaccinated far outweigh the risks in the majority of people.
The Medicines and Healthcare products Regulatory Agency (MHRA) and the UK Government’s independent expert advisory body, the Commission on Human Medicines (CHM), have conducted a review into the potential harm of the vaccine.
The MHRA stated: “Healthcare professionals should be alert to the signs and symptoms of myocarditis and pericarditis.