Health officials say it’s important for people to be aware of cases of myocarditis found in young adults who got the coronavirus vaccine.

They are still, however, advising the younger populations to get vaccinated.

The Centers for Disease Control and Prevention have reported more than 1,200 cases of myocarditis, heart inflammation, and pericarditis, inflammation of the tissue surrounding the heart following the administration of around 300 million doses of the Pfizer and Moderna vaccines.

The Food and Drug Administration has put a warning label on the MRNA vaccines, and doctors say it’s important to be aware of the symptoms.

Dr. Steven Kunkes, a cardiac specialist in Fairfield and a professor at Yale University, says if someone experiences chest pain, shortness of breath and palpitations, they should not exert themselves.

“Whenever the heart muscle is inflamed, it is essential not to put any more stress on the heart,” Kunkes says. “Because this can make a temporary problem into a permanent problem.”