Frédéric Sinistra (13 January 1980 – 15 December 2021) was a Belgian kickboxing champion who died from COVID-19.[1][2] Born in Seraing, Sinistra taught himself kickboxing at a young age and began competing in the sport at age sixteen. He went on to win the Belgian National Championship title four times and the World Championship a total of three times.
^ abGilbert, David (20 December 2021). "A COVID-Denying Kickboxing World Champion Just Died From COVID". Vice.com. A three-time world champion kickboxer died at his home in Belgium from complications caused by COVID-19 weeks after discharging himself from the hospital. Fred Sinistra, 40, was unvaccinated and would not even use the term COVID-19. ... [He] is the latest in a long line of anti-vaccine and COVID skeptics who have died as a result of complications caused by COVID-19.