Vaccin : quand, qui, comment ?

[Hugh]

https://med.stanford.edu/news/all-news/2025/12/myocarditis-vaccine-covid.html

 

"Stanford Medicine study shows why mRNA-based COVID-19 vaccines can cause myocarditis"

 

[Adrian]

il y a 4 minutes, Hugh a dit :

https://med.stanford.edu/news/all-news/2025/12/myocarditis-vaccine-covid.html

 

"Stanford Medicine study shows why mRNA-based COVID-19 vaccines can cause myocarditis"

 

 

Citation

One rare but real risk of the mRNA-based COVID-19 vaccines is myocarditis, or inflammation of heart tissue. Symptoms — chest pain, shortness of breath, fever and palpitations — appear in the absence of any viral infection. And they happen quickly: within one to three days after a shot. Most of those affected have high blood levels of a substance called cardiac troponin, a well-established clinical indicator of heart-muscle injury. (Cardiac troponin is normally found exclusively in the heart muscle. When found circulating in blood, it indicates damage to heart muscle cells.)

 

Vaccine-associated myocarditis occurs in about one in every 140,000 vaccinees after a first dose and rises to one in 32,000 after a second dose. For reasons that aren’t clear, incidence peaks among male vaccinees age 30 or below, at one in 16,750 vaccinees.

Fortunately, most of these cases end well, Wu said, with full heart function retained or restored.  Recovery is typically swift.

“It’s not a heart attack in the traditional sense,” he said. “There’s no blockage of blood vessels as found in most common heart attacks. When symptoms are mild and the inflammation hasn’t caused structural damage to the heart, we just observe these patients to make sure they recover.”

However, Wu noted, if the inflammation is severe the resulting heart injury can be quite debilitating, leading to hospitalizations; ICU admissions for critically ill patients; and deaths, albeit rarely.

“But COVID’s worse,” he added. A case of COVID-19 is about 10 times as likely to induce myocarditis as an mRNA-based COVID-19 vaccination, Wu said. That’s in addition to all the other trouble it causes.

Wu shares senior authorship of a study describing his team’s findings, published Dec. 10 in Science Translational Medicine, with former Stanford Medicine postdoctoral scholar Masataka Nishiga, MD, PhD, now an assistant professor at The Ohio State University. The study’s lead author is current postdoctoral scholar Xu Cao, PhD.

“Medical scientists are quite aware that COVID itself can cause myocarditis,” Wu said. “To a lesser extent, so can the mRNA vaccines. The question is, why?”

 

[Rincevent]

il y a 8 minutes, Adrian a dit :

“But COVID’s worse,” he added. A case of COVID-19 is about 10 times as likely to induce myocarditis as an mRNA-based COVID-19 vaccination, Wu said.

Ben voyons. On oublie toute notion d'évaluation bénéfice/risque et surtout on ne remarque pas que l'impact d'un Quauvide dépend lourdement de l'âge (tout comme celui d'une dose d'ARNm, mais dans le sens inverse).

 

il y a 10 minutes, Adrian a dit :

“Medical scientists are quite aware that COVID itself can cause myocarditis,” Wu said. “To a lesser extent, so can the mRNA vaccines. The question is, why?”

Parce que les deux tabassent les récepteurs ACE2, on le sait depuis cinq, bientôt six ans. [Fatigue brandolinienne.. ]