One Swiss athlete and one Russian official have tested positive for the coronavirus ahead of the biathlon World Cup resuming in Oberhof, the ruling IBU said Friday. Sprint races for men and women, delayed from Thursday due to poor weather conditions at the German resort, open the second half of the Olympic season following the Christmas break. “Contact tracing by the local health authorities is ongoing and a decision on quarantine is pending,” the IBU said. “The Swiss and the Russian team are under an extended testing protocol over the next days.” Swiss ski said the athlete in question was Ben…