Florian Dagoury



5 November 2021



Vaccination Status: 

Myocarditis, Pericarditis, Trivial Mitral Regurgitation

Florian Dagoury: World Record Holder In Static Breath-Hold Freediving Diagnosed With Myopericarditis After Pfizer Vaccine, Possible End Of Career

Florian Dagoury, currently the world’s top static breath-hold free diver, was diagnosed with myocarditis and pericarditis 40 days after his second dose of the Pfizer vaccine. The elite athlete of French origin experienced a significant decrease in his breath-hold ability and went to a cardiologist, who told him that it’s a common side effect of the Pfizer vaccine.

He shared his testimony on his Instagram account (, telling his followers: “After my second dose, I noticed that my heart rate was much higher than normal and my ability to hold my breath had significantly decreased. While sleeping I am at 65-70bpm – beats per minute (BPM) – instead of 37-45bpm. During the day I am always above 100bpm instead of 65bpm, even when I sit and relax. I once even hit 177bpm while dining with friends! Ten days after my second vaccine, I saw a cardiologist who told me this was a common side effect of the Pfizer vaccine, that it was not necessary to worry and that it was necessary to rest. Forty days after the second vaccine, I had not progressed and therefore consulted another cardiologist who diagnosed me with myocarditis, pericarditis and trivial mitral regurgitation! It is basically inflammation of the heart muscles caused by the immune system and small leaks of blood from valves that no longer close properly. I now have difficulty reaching 8 minutes of freediving, 150 m of diving and I even have a strong desire to breathe while doing 40 m dives. A 30% decrease in my wholesale diving performance.