People who received one dose of an mRNA COVID-19 vaccine had a higher risk of acute heart disease compared with those who received one dose of a non-mRNA COVID-19 shot, according to a new peer-reviewed study.
A team of South Korean researchers, who published their report on Oct. 24 in Epidemiology and Infection, said the heightened risk was most pronounced among people ages 10 to 59 compared with those age 60 and older.
The study authors analyzed the health data of 3,350,855 people who received one dose of a COVID-19 vaccine from February 2021 to March 2022. The authors obtained the data from South Korea’s National Health Insurance Service (NHIS).
South Korea administered five types of COVID-19 vaccines: the Pfizer-BioNTech and Moderna mRNA shots, and the AstraZeneca, Janssen (Johnson & Johnson) and Novavax non-mRNA shots.
The study authors wanted to see if receiving a first dose of a particular type of COVID-19 vaccine was associated with developing acute heart disease within 21 days post-vaccination.
They also sought to determine if developing a COVID-19 infection within 21 days after the first vaccine dose was linked to a higher risk of acute heart disease.
To find out, they analyzed cardiac adverse events “including acute cardiac injury, acute myocarditis, acute pericarditis, cardiac arrest, and cardiac arrhythmia, in relation to vaccine type and COVID-19 within 21 days after the first vaccination date,” according to their report.
“The results revealed higher heart disease risk in individuals receiving mRNA vaccines than other types,” they wrote. “Individuals infected by SARS-CoV-2 also exhibited significantly higher heart disease risk than those uninfected.”
The study authors didn’t find a statistically significant interaction between individuals’ COVID-19 infection status and the type of COVID-19 vaccine they received — meaning the higher risk wasn’t contingent on the person having both a COVID-19 infection and an mRNA vaccination…
READ FULL ARTICLE HERE… (childrenshealthdefense.org)
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