— Gareth Thomas (@gareththomas14) September 14, 2019
Thomas, who came out as gay in 2009, is thought to be the first UK sportsman to go public about living with the virus, and has revealed that he was driven to suicidal thoughts as a result of his diagnosis.
He is taking part in an Ironman challenge on Sunday, which has involved him learning to swim,
Labour leader Jeremy Corbyn called him a “role model” and referee Nigel Owens said Thomas was “brave”.
Ian Green, chief executive at the Terrence Higgins Trust HIV charity, said Thomas’s diagnosis may help change public attitudes.
Mr Green said improving treatment “means that people living with HIV like Gareth now live long healthy lives”.
Mr Green said that Thomas blazed a trail by being the first rugby player to come out as gay and “has done so much to encourage inclusion and diversity within the sport”.
Mr Corbyn said: “Gareth Thomas has again shown enormous strength in declaring himself HIV positive.
“A role model challenging stigma and prejudice.”
Current Wales head coach, Warren Gatland sent Gareth Thomas his best wishes during his first news conference in Japan.
Nobody should be forced to disclose their status but we have nothing but respect and admiration for @Gareththomas14 and all the trailblazing campaigning he’s already done for #LGBT+ people in Wales and further afield. 🌈
— Pride Cymru (@PrideCymru) September 15, 2019