A health worker conducts a Covid-19 test in San Francisco, California on Monday, January 10, 2022.
David Paul Morris | Bloomberg | Getty Images
According to a large study released by the Centers for Disease Control and Prevention on Friday, people infected with Kovid-19 are at higher risk of myocarditis and other inflammatory heart disease than those vaccinated against the disease.
The CDC found that the risk of myocarditis, pericarditis, and multisystem inflammatory syndrome was higher in men and women 5 years of age or older after Pfizer or modern vaccination after covid infection. However, according to the CDC, these cardiac conditions are rare after infection and vaccination.
Myocarditis is an inflammation of the heart muscle and pericarditis is an inflammation of the outer lining of the heart. Multisystem inflammation is a condition associated with covid infection that affects multiple organ systems.
Pfizer and Moderna vaccines have been linked to a higher risk of myocarditis and pericarditis after the second dose, especially in boys aged 12- to 17 years. However, even in this group the risk of myocarditis and pericarditis was higher after vaccination after covid infection, according to the CDC.
Among adolescent boys, the rate of myocarditis or pericarditis after infection was at least 50 cases per 100,000 people, and at least 22 cases per 100,000 people after the second tick dose. The overall risk of heart condition after covid infection was 5.6 times higher than the dose of the second vaccine. The risk after infection was 69 times higher than in the first shot.
From January 2021 to January 2022, the CDC examined electronic health records of more than 15 million people aged 5 and over across 40 healthcare systems. The second dose of Pfizer and Moderna vaccine. The study excluded the booster dose from the comparison.
Overall, the risk of heart problems after covid infection was 2 to 115 times higher than vaccination, depending on age, gender, and dose administered.
In February, the CDC said that men between the ages of 12 and 39 should wait eight weeks between the first and second doses of the Pfizer or modern vaccine to reduce their risk of myocarditis. The Canadian Public Health Authority found that the rate of myocarditis was higher after the Pfizer or Modernna vaccine when the first and second doses were less than 30 days.
Moderna’s second dose appears to be associated with a higher risk of myocarditis than Pfizer, according to data presented to the CDC’s Committee of Vaccine Experts in February. Ontario, Canada’s public health authority found that men aged 18-24 had a 5 times higher rate of myocarditis after taking the second dose of Modern than Pfizer.
However, according to a CDC survey of healthcare providers presented at the February meeting, the vast majority of people who develop myocarditis after vaccination have fully recovered and most of them have no effect on their quality of life.