Flathead County continuing to see spike in COVID-19 cases 137 active cases reported COVID-19 cases are on the rise again in Flathead County with 137 active cases of the virus reported on Monday. and last updated 2021-07-19 19:10:07-04 KALISPELL â COVID-19 cases are on the rise again in Flathead County with 137 active cases of the virus reported on Monday. âWeâre seeing the Delta variant here; we donât know to what extent yet," Flathead County Health Officer Joe Russell told MTN News. Russell said new variants of COVID-19 are leading to an uptick in active cases in Flathead County which currently leads the entire state of Montana in active cases of the virus.