Japanese Study Links Covid Vaccines to Increased Risk of Serious Heart Damage

Groundbreaking Research Reveals Long-Term Cardiac Injury Caused by mRNA Injections

A recent study conducted by Japanese medical researchers, published in Circulation Reports, has raised significant concerns regarding the safety of Covid mRNA vaccines, linking them to an increase in heart attacks and sudden cardiac deaths.

The study, led by Professor Kaoru Dohi from Mie University, involved a comprehensive examination of myocarditis cases following Covid vaccination. Utilizing advanced biopsy techniques, the research team identified long-term damage to heart muscle cells in patients who developed myocarditis post-vaccination.

The study revealed that out of 40 patients who underwent endomyocardial biopsies, over half showed signs of cardiomyocyte injury accompanied by inflammatory cell infiltration. Alarmingly, a large proportion of these patients developed severe myocarditis requiring mechanical circulatory support. The findings suggest a direct correlation between mRNA vaccines and severe cardiac complications, challenging previous assertions by health authorities that vaccine-induced myocarditis is a temporary condition.

Summary of Findings: Myocarditis After mRNA COVID-19 Vaccination Study

Background: The study aimed to understand how myocarditis following mRNA COVID-19 vaccination affects heart tissue and the relationship between heart cell injury and patients’ clinical symptoms.

Methods:

• The researchers looked at patients diagnosed with myocarditis after receiving either the first or second dose of mRNA COVID-19 vaccine.

• Data was collected from 42 centers across Japan, focusing on patients who underwent endomyocardial biopsies or autopsies.

• A total of 40 patients were studied.

Results:

• Out of 40 patients:

  • 19 patients (47.5%) had mild inflammation and swelling without damage to heart cells (cardiomyocytes).

  • 21 patients (52.5%) experienced cardiomyocyte injury, which was categorized as follows:

    • 11 patients: Lymphocytic infiltration (inflammatory cells).

    • 7 patients: Eosinophilic infiltration (another type of inflammatory response).

    • 3 patients: Both types of infiltration.

• Patients with cardiomyocyte injury had specific clinical characteristics:

  • Older age.

  • Similar distribution of sexes.

  • Less frequent reports of chest pain.

  • Lower left ventricular ejection fraction, indicating reduced heart function.

• Among the 21 patients with cardiomyocyte injury:

  • 15 patients (71.4%) developed severe (fulminant) myocarditis.

  • 13 patients (86.7%) required mechanical circulatory support.

• In contrast, none of the patients without cardiomyocyte injury developed severe myocarditis.

Conclusions: The study highlighted that there are varying degrees of heart cell injury in patients who develop myocarditis after mRNA COVID-19 vaccination. The presence of cardiomyocyte injury is strongly linked to more severe manifestations of myocarditis.

Key Data Points:

• 40 total patients studied.

• 52.5% had cardiomyocyte injury.

• 71.4% of those with injury developed severe myocarditis.

• P<0.001 indicates a statistically significant difference in outcomes between those with and without cardiomyocyte injury.

The research aligns with other findings from Japanese institutions that report a drastically increased risk of myocarditis and other heart-related issues following vaccination. This has spurred calls from Japanese scientists for further investigation into the safety of Covid vaccines and their potential links to a wide range of serious health conditions.

Japan had a high covid vaccination rate of around 80 percent. As Japan grapples with rising all-cause mortality rates post-vaccination, this study adds urgency to the global discourse on vaccine safety and public health policies.