Ronaldo 'Jacare' Souza became the first UFC fighter to test positive for COVID-19 ahead of a scheduled bout in Florida on Saturday night.
His fight against Uriah Hall has been cancelled, but the UFC 249, which is a behind-closed-doors event, will proceed as scheduled.
Souza and two of his cornermen are asymptomatic, the mixed martial arts promotion said in a statement.
"All three men have left the host hotel and will be self-isolating off premises, where UFC's medical team will monitor their conditions remotely and will provide assistance with any necessary treatment," UFC said.
All fighters taking part in Saturday's event were tested for the coronavirus on arrival in Florida.
Motor racing-McLarens fastest in third practice at Suzuka
De Bruyne to leave Man City at the end of season
Dubai World Cup to kick off on Saturday
Chelsea climb back into top four with 1-0 win over Spurs
Navarro says players' demand for more prize money is about fair treatment
