Pfizer’s COVID-19 shot is associated with a 133-times greater risk of heart inflammation for teenage boys, according to a new study in the Journal of the American Medical Association (JAMA).
The study, published last month by researchers with the U.S. Centers for Disease Control and Prevention (CDC), found that myocarditis skyrocketed in men between 12 to 24 years old after both Pfizer’s and Moderna’s mRNA COVID jabs, Israel National News reported.
Myocarditis is a type of heart inflammation that has been linked to COVID vaccines on numerous occasions. The authors of the study noted that the condition is potentially fatal and can result in heart failure and death.
According to the researchers, “the risk of myocarditis was increased across multiple age and sex strata following vaccination with mRNA-based COVID-19 vaccines,” but the disease is most prevalent in young men. Males accounted for 82 percent of myocarditis cases examined in the study, with a median age of 21. The vast majority – 82 percent – of cases involved a second shot.
The risk was greatest following the Pfizer vaccination. According to the study, boys aged 12 to 15 years old had a myocarditis rate of 70.7 cases per million Pfizer doses – 133 times higher than the background rate of.53 per million. For young men between the ages of 16 and 17, the rate was 106 cases per million doses, a 79-fold increase over the baseline risk of 1.34 cases per million doses.
Myocarditis occurred in 52.4 cases per million Pfizer injections and 56.3 cases per million Moderna doses in men aged 18 to 24 years. The background rate was only 1.76 doses per million.
The study analyzed data from the Vaccine Adverse Event Reporting System (VAERS), a vaccine injury tracking system managed by the Centers for Disease Control and Prevention (CDC) and the United States Food and Drug Administration (FDA), between December 2020 and August 2021. According to the researchers, out of 1,991 VAERS reports of myocarditis following COVID-19 vaccination, 1,626 met the CDC’s case definition.
The most frequently reported symptoms were abnormal ECG or cardiac MRI results (72%), as well as chest pain or discomfort (89 percent). Around 30% of patients also reported experiencing shortness of breath, while 9% experienced heart palpitations. The authors stated that symptoms typically manifested within two days of inoculation.
Ninety-six percent of patients required hospitalization, and 13% continued to experience symptoms after discharge.
The myocarditis cases are most likely underestimated, the CDC study emphasized. VAERS is a passive surveillance system, and research shows that it significantly undercounts vaccine injuries.
Other recent studies have found even greater COVID vaccine-related heart inflammation risks for young men. A November article from Hong Kong estimated that one in 2,680 boys between 12-17 years old will develop the condition within two weeks of a second Pfizer dose.
A study by Israeli researchers the following month put the risk at one in 6,600 for men ages 16-19 vaccinated with Pfizer. The Israeli study reported an 81 percent hospitalization rate for myocarditis cases and a death rate of nearly one percent.
And a large British study late last year found that the risk of myocarditis in men under 40 is several times higher than average after Pfizer or Moderna vaccination and that post-vaccine heart inflammation may be more lethal than other forms of the disease. Of the patients hospitalized after taking the Pfizer shot, 14 percent died, compared with 9 percent of those without a recent mRNA vaccine.
Even people with apparently mild cases may still experience long-term problems, such as greater risk of heart attacks later in life, experts have warned. The American Heart Association and the American College of Cardiology advise that patients should refrain from sports for three to six months after myocarditis and that further mRNA-based COVID jabs should be deferred, according to the January CDC study.
At the same time, the shots have proved unable to stop transmission of the virus. Data has shown that vaccinated people have had higher infection rates than the unvaccinated and have driven record COVID spikes around the world in recent weeks.
Young people have virtually nonexistent risks of death or serious illness due to COVID-19. Between 0.00-0.01 percent of all child coronavirus cases in the U.S. have resulted in death, according to the American Academy of Pediatrics. Stanford University medical professor Dr. John Ionnidis estimated that the survival rate of the virus is 99.986 percent for people between 20 and 29 years old and no lower than 99.7 percent for people under 60.