A spokesperson told Reuters one of the competitors to have been hit by the virus is Fabian Bösch, slopestyle world champion in 2015.

The other has been named by Swiss media as Elias Ambuehl, a three-time Winter X games medallist.

More than 200 people have suffered from the norovirus, which caused vomiting and diarrhea, at Pyeongchang 2018.

The outbreak was initially confined to security staff before it spread to those working for the Organising Committee.

It has now reached the athletes, although International Olympic Committee Presidential spokesperson Mark Adams has confirmed neither athlete staying at the main Athletes' Village.

Their accommodation is located at the Phoenix Snow Park, where freestyle skiing and snowboarding events are taking place.

In a statement, Swiss Olympic confirmed two cases but insisted they were no longer showing signs of the virus.

"The victims were immediately accommodated in a single room and had no contact with other athletes," the statement said.

"The affected athletes were comprehensively cared for by the medical team of Swiss Olympic and are currently no longer displaying symptoms that correspond to the virus

"The remainder of the delegation was also asked to follow the appropriate hygiene instructions (regular and extensive hand washing with soap, disinfection of hands with disinfectant, no shaking hands, etc.)

"We currently assume that these two individual cases remain and that the two athletes have already fully recovered."