Ribom stayed in Sweden for safety reasons when the national team traveled to Drammen earlier this week before Thursday's sprint competitions.

The reason was that she had close contact with the men's national team Marcus Grate who was infected with corona after the World Cup in Lahti last week.

"During the morning, she showed symptoms of illness and tested positive via a quick test," the national team announces.

Ribom came second in the sprint in Lahti, her best result in the World Cup.

She is replaced in the squad by Lovisa Modig.