One player has tested positive and is isolated, and the team did not take part in Friday's opening ceremony as a precaution, reports Expressen, citing Blick.
According to Blick, it is unclear whether the Swiss team will be able to play as planned against Canada on Saturday evening.
Previously, Fredrik Joulamo, sports director and team manager for the Swedish Olympic Committee (SOK), said France and the USA were also affected, "according to information".
The stomach flu outbreak began in the Finnish women's hockey team, which shares a house with the Swedish team in the Olympic Village.
