(STUDY) Pfizer, Moderna Covid shots linked to acute heart disease risk

The following is from Children’s Health Defense.

Conducted by a South Korean team, the study analyzed health data from over 3.35 million vaccinated individuals. Researchers specifically looked at cardiac events, including acute cardiac injury, acute myocarditis, acute pericarditis, cardiac arrest, and cardiac arrhythmia, in relation to vaccine type and COVID-19 infection within 21 days after the first vaccination date. They found these risks were notably higher among recipients of mRNA vaccines compared to non-mRNA options.

People who received one dose of the Pfizer or Moderna mRNA COVID-19 vaccines had a higher risk of acute heart disease compared to those who received non-mRNA COVID-19 shots, according to a new study published in Epidemiology and Infection. This elevated risk was particularly significant within 21 days following the first dose, especially for individuals aged 10 to 59, the researchers reported.

The study reviewed five COVID-19 vaccines available in South Korea: the Pfizer-BioNTech and Moderna mRNA vaccines, and the AstraZeneca,, Janssen (Johnson & Johnson), and Novavax non-mRNA vaccines. Researchers compared heart disease events across these vaccine types to isolate the effects specific to mRNA technology.

Lead researcher Karl Jablonowski described the findings as “compelling.”

“Elevated risk of acute heart disease for mRNA products over others is biologically plausible, even beyond the well-established myocarditis and pericarditis.
This study highlights the potential for a population-based approach to reveal such harms.”
Karl Jablonowski, Ph.D., Senior Research Scientist, Children’s Health Defense

The study authors also emphasized the importance of further research to refine these findings, pointing to potential limitations, such as “temporal bias” due to the unavailability of certain vaccine types at different times. Tracking cardiac events following subsequent doses, they argue, may offer clearer insights into the observed risks.

For more information, read the full article at Children’s Health Defense.