 Nyora kupfuurira kweiyi ndima - Bergström akanakisa kupedzisa paFIS Nordic World Ski Championships yaive yechitanhatu kaviri muchiitiko che30 km 1997, 1999. Kukunda kwake chete muNdebe yeNyika kwakanga kuri mumutambo wemakiromita makumi matatu muSweden muna 1999. 