Five players from the Swiss and Finnish ice hockey teams have tested positive for norovirus but there is no wider outbreak at the 2026 Milan Cortina Games, the International Olympic Committee said on Saturday.

The single Swiss case was confirmed two days after Canada and Finland were forced to postpone their opener when four members of the Finnish team fell ill with norovirus.

"We had a few cases from Finland with symptoms, dealt with. One Swiss case coming with symptoms, dealt with in the most appropriate way by the medical team," Olympic Games Executive Director Christophe Dubi told a press conference.

"Let's be very clear: no outbreak."

Sometimes called the winter vomiting bug, norovirus is the most common cause of acute gastroenteritis globally and has symptoms including diarrhea and vomiting, according to the World Health Organization.

Both teams have confirmed the cases.

Switzerland's positive case was discovered after they beat Czech Republic 4-3 in a thrilling shootout on Friday.

Other Swiss team members were initially isolated as a precaution but were back practicing at Milano Rho arena on Saturday ahead of their game against Canada which was to go ahead as planned.

"Let's not start to make a point of what is currently five athletes being dealt with. Please. Proper protocols, really well done," added Dubi.

The IOC's medical chief Jane Thornton has said the cases are not related.

The IOC is no stranger to dealing with viruses, having staged the Tokyo 2020 Games in 2021 as well as the Beijing 2022 Winter Olympics during the coronavirus pandemic.

Both Games were held without fans in the stadiums.