Withdrawn study linking the Covid vaccine to myocarditis: "Serious error in the calculations"

A research team from the Heart Institute of the University of Ottawa (Canada) withdrew a study not yet peer-reviewed that found an association between Covid vaccine and myocarditis and / or pericarditis, showing an incidence of one case each. one thousand doses administered (0.1 percent). Here is the significant mistake made by scholars, who invite everyone to get vaccinated, stressing the safety of drugs.

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A Canadian study that claimed to have found a case of myocarditis it’s the pericarditis for each a thousand doses from Covid mRNA vaccine (Messenger RNA) was withdrawn due to a gross error in the calculations. Specifically, the denominator was completely wrong, that is the number of doses administered in the metropolitan area of ​​Ottawa, taken as a reference to correlate the risk of vaccination withinflammation of the heart muscle (myocarditis) and the membrane that protects the heart (pericarditis).

Scientists at the University of Ottawa’s Heart Institute had counted 32,379 doses Covid mRNA vaccine (15,997 of Spikevax from Modern and 16,382 of Comirnaty from Pfizer) inoculated in and around the Canadian city e 32 almost of myocarditis and / or pericarditis, between 1 June 2021 and 31 July 2021. By dividing the number of doses administered with that of the detected cardiac inflammation cases, a risk of 0.1 percent, or one case every thousand doses or 10 every 10 thousand. This data, albeit relatively reassuring, also in light of the fact that patients have had mild symptoms in the vast majority of cases, it was exploited and flaunted to the four winds by the movements “novax“To highlight the lack of safety of anti Covid vaccines.

But as mentioned, Canadian scientists made such a significant mistake that they forced them to withdraw their study. In simple terms, the number of doses administered in the Ottawa metropolitan area was enormously underestimated: it was not 32,379, but well 854.930, that is 25 times more. This totally skipped the previous calculation and highlighted a statistically insignificant correlation between vaccine and myocarditis / pericarditis. “Our reported incidence appeared greatly inflated by an erroneously small denominator (ie the number of doses administered over the time period of the study). We looked at the data available at Open Ottawa and found that there was indeed a large underestimate, with the actual number of doses administered exceeding 800,000. In order to avoid misleading colleagues or the general public and the press, we authors unanimously wish to withdraw this document on the basis of incorrect incidence data, ”said Professor Andrew M. Crean and colleagues in a statement.

Coronavirus Bulletin October 10, 2,278 infections on 270,044 swabs and 27 deaths from Covid

Even the University of Ottawa Heart Institute itself officially apologized for the mistake in a press release: “A preprint of the University of Ottawa Heart Institute that cited erroneous data that greatly inflated the incidence of post-vaccine myocarditis was withdrawn at the request of the authors. We are sorry that this error has led to incorrect information on the incidence of post-vaccine myocarditis. COVID-19 vaccines are safe and have been shown to be effective against the disease. We invite anyone who has not yet received the injection to be vaccinated ”. As pointed out by the Canadian institute, the “mRNA COVID-19 Vaccination and Development of CMR-confirmed Myopericarditis” study uploaded to the Medrxiv database was a preprint, therefore not yet subjected to peer review and not yet published in a specialized scientific journal.

Despite the significant error, other investigations had associated Covid mRNA vaccines with very rare cases of myocarditis, particularly in male teenagers. However, by comparing the incidence of myocarditis cases detected during the COVID-19 pandemic and before it erupted, a US CDC research team determined that patients infected with the coronavirus SARS-CoV-2 present a risk well 16 times higher to develop heart inflammation. For those under the age of 16 or over 75, however, this risk was found to be 30 times higher. Vaccines have been shown to be largely safe and effective, and experts recommend that everyone get vaccinated to protect themselves from COVID-19.

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