After the COVID-19 shot, heart inflammation cases are common among children aged 5-11 years old.

The majority of patients suffering from inflammation felt better after they received medication.

The Centers for Disease Control and Prevention reported Thursday that it had received reports from eight children aged 5-11 years old with myocarditis, a condition in which the heart is inflamed. They were vaccinated against COVID-19 by Pfizer-BioNTech.

According to the agency, there were more than 7 million vaccine doses for the age group of 5-11 years at the time that it reviewed the data. There had been 5.1 million doses of the first vaccine and 2 million doses for the second.

According to Reuters, the CDC stated that the cases had “a mild clinical course”.

These cases were reported to the U.S. Vaccine Adverse Event Reporting System, (VAERS), was submitted by the CDC to a panel made up of experts.

The CDC updated in November after discovering rare cases, including myocarditis or pericarditis, related to the CoVID-19 vaccination. Pericarditis refers to inflammation of the outer lining the heart.

VAERS states that symptoms of both heart inflammations can include chest pain, shortness or no breath, and feeling like your heart is beating fast, fluttering, or beating hard. Reports indicate that both young adults and male adolescents have experienced these cases.

The majority of cases occurred within one week of receiving the Moderna or Pfizer BioNTech shots, particularly in young men.

According to the CDC, most patients suffering from inflammation feel better after taking medication and rest. Before returning to exercise or other activities, it is a good idea for myocarditis sufferers to consult a physician.

Despite these new inflammatory side effects, CDC encourages parents to continue to get their children vaccinated against COVID-19 at the age of 5 and older. They believe the long-term effects of the vaccine outweigh any side effects.

According to the CDC, “The risks of COVID-19 disease and its associated, possibly serious complications such as long-term medical problems, hospitalization and even death far outweigh any potential risks of having a rare adverse response to vaccination, including the risk of myocarditis and pericarditis,”

If you have any concerns, the agency recommends that you speak to your child’s pediatrician or health care provider.

This report on inflammation in children is just a few days after the CDC recommended Moderna and Pfizer vaccines over Johnson & Johnson due to rare blood clotting.