Anticovid vaccine: an increased risk of cardiovascular problems?

Myocarditis, pericarditis, thrombosis… These cardiovascular pathologies have been triggered in some people after vaccination against Covid-19. A study published in The Lancet in early June identifies a number of patients with myocarditis or pericarditis after the second dose of vaccine.

411 cases per 15,000,000 people

This study was carried out on a large cohort of 15,148,369 people aged 18 to 64 and vaccinated between December 2020 and December 2021 by the two mRNA vaccines manufactured by the Pfizer and Moderna laboratories.

In total, 411 cases of myocarditis or pericarditis were detected, with a higher incidence among 18–25 year olds after a second dose. For the authors of this work, “the study results, as well as the benefit-risk balance, continue to support vaccination with either of the two messenger RNA vaccines“.

Greater risk in young adults

In the journal Scientific Reports, we can read that an increase of more than 25% in calls concerning cardiac arrests or acute coronary syndromes were noted among 16-39 year olds during the deployment of the anti Covid vaccination in Israel, while as in Germany or Scotland.

In the journal of the American Medical Association JAMA, we note “an increase in the number of hospital contacts for coagulation disorders and cerebrovascular diseases, in particular for thrombocytopenia and cerebral venous thrombosis“, after vaccination by Moderna, Pfizer and especially Astra Zeneca.

Finally, another JAMA study indicates that inflammation of the heart is much more frequent following a Moderna vaccine than an injection of Pfizer vaccine, for the second dose (132 cases for a million second dose of Moderna vaccine, against 11 for Pfizer). According to the Canadian researchers behind this work, this risk can be greatly reduced by leaving a longer interval between the two doses.

From mass vaccination to targeted vaccination

Asked about the question, Dr Fabien Quedeville, general practitioner, recalls that this once again raises the question of vaccinating young populations, without comorbidities and without an obvious risk of having a serious form of Covid-19.

“We put young people at risk of severe disease with long-term consequences, as is the case for myocarditis. denounces the doctor. “Vaccines have been tested on cohorts, but when you vaccinate massively as has been the case, you discover these side effects only after” further exposes the doctor, who believes that the subject deserves further exploration, to understand the effects of vaccines and for the continuation of the vaccination of frail and/or elderly people.