In Saturday's hunt start, Johannes Thingnes Bö was victorious, followed by his brother Tarjei Bö in second place.
The Norwegians took part in the competition despite having tested positive for covid-19 and have traveled home to Norway after the competitions in Nove Mesto.
Now the Swedish team has also been affected.
Sebastian Samuelsson has had mild cold symptoms and has subsequently tested positive, announces national team coach Johannes Lukas.
As he feels relatively well, the national team hopes that he will be able to compete later in the weekend, provided he feels completely healthy.
In addition to the distance race, there is also a relay and mass start in Östersund.
Samuelsson was one of the activists who criticized the Bö brothers, when they first planned to go on the international association's chartered flight to the upcoming competitions in Östersund, even though they tested positive.