The International Olympic Committee (IOC) has pledged to improve conditions for athletes who are isolating after positive coronavirus tests after harsh criticism from the German team. IOC executive director Christophe Dubi told reporters on Sunday that it is “a duty” and “a responsibility” that athletes and everyone else who have to isolate at the Beijing Games have decent conditions. “We have to make sure that the expectations are met,” he said. The German Olympic Sports Confederation (DOSB) had on Saturday criticised the conditions for their isolated three-time Nordic combined skiing gold me…