The overall risk of heart disease or myocarditis after COVID-19 vaccination is "very low", affecting 18 people per million vaccinations, according to a team of researchers in Singapore.

Their study, published in the journal The Lancet Respiratory Medicine, found no significant difference in the incidence of myocarditis after vaccination with COVID-19 and other vaccines.

Other vaccines affected about 56 people per million doses.

Myocarditis is a disease that causes pain in the heart muscle and sometimes heart disease and stroke. It is usually caused by an infection, but in rare cases it can occur even after vaccination. 

The study was conducted by researchers from the National University Heart Center Singapore (NUHCS), the National University Hospital (NUH) and the Yong Loo Lin School of Medicine (NUS Medicine) at the National University of Singapore.

According to a press release on Tuesday (April 12), scientists have looked at more than 400 million vaccines to compare the risk of myocarditis and other diseases, including meningitis, influenza and smallpox, after vaccination against COVID. -19.

"Our research shows that the new COVID-19 vaccine showed no significant difference in the overall risk of myocarditis compared to the vaccine for other diseases," said Dr. "He said. A writer on surgery vascular and research at NUHCS.

Myocarditis has been reported following mRNA-based immunization with COVID-19, particularly in adolescents and young adults.

The researchers found that with the COVID-19 vaccine, the incidence of myocarditis was lower in men (vs women), under 30s (vs 30+), and mRNA immunizations ( vs no-no-no- no-no-no-no-in-no-in-no). - with) get more. mRNA vaccine), and after a second injection (compared to the first or third dose). 

This study suggests that rules such as the specific treatment of non-mRNA receptors in men, especially men under 18, can be determined by managing the risk of myocarditis taking into account all the benefits and risks of the vaccine.

"The occurrence of myocarditis after non-COVID-19 vaccination may indicate that myocarditis is a clinical manifestation of the disease and is not unique to the SARS-CoV-2 spike protein of COVID inhibitors or pathogens -19." says Dr. Jyoti Somani, an epidemiologist at NUH and author of the study.

This suggests that the risk of side effects such as "reduced risk of infection, hospitalization, severe illness and death from COVID-19" should be considered. Somani added.