Tissue samples from people who died within 30 days of a shot tested positive for messenger RNA.
COVID-19 vaccine was detected in patients who died within a month of vaccination, according to a new study.
U.S. researchers analyzed tissue samples from the autopsies of 25 people, including 20 who were vaccinated.
Samples from the hearts of three patients, all of whom died within 30 days of a Pfizer shot, tested positive for messenger ribonucleic acid (mRNA).
Eight bilateral axillary lymph node samples, from people who died within 30 days of a Moderna or Pfizer vaccine, also tested positive. The companies’ shots utilize mRNA.
The research shows “the vaccine can persist for up to 30 days, including in the heart,” Dr. James Stone, with the departments of pathology at Massachusetts General Hospital and Harvard Medical School, told The Epoch Times via email.
The study was published by npj Vaccines. Authors declared no conflicts of interest. They said the research was supported by Massachusetts General Hospital, which is in Boston.
In testing of heart and bilateral axillary lymph node tissues from other vaccinated people who died, no vaccine was detected.
Additionally, no vaccine was detected in the liver, spleen, or mediastinal lymph nodes—vaccine was detected in the liver and spleen in preclinical rodent studies before—nor was any detected in tissues from the unvaccinated patients.
The Pfizer and Moderna vaccines are known to cause myocarditis, a form of heart inflammation that can result in death.
The people who had mRNA detected in the heart did not have myocarditis, though they did have detectable heart injuries, researchers found.
The researchers said they believed the heart injuries stemmed from underlying diseases and not the vaccines.
“There is no indication as yet that the vaccine in the heart is causing any problems in these patients; neither the causes of death nor the causes of the myocardial injury were linked to the vaccines in that study,” said Dr. Stone, one of the authors of the paper.
That position was challenged by Dr. Clare Craig, a British pathologist who reviewed the research.
