Flu-like illness accounts for 0.07% of emergency department visits in Yellowstone, Big Horn, Carbon and 5 more counties for the week of September 20. Flu-like illness activity in Yellowstone, Big Horn, Carbon and 5 more counties is holding steady compared with recent weeks. The highest reading in the current data window is 0.07%.

Emergency department visits for influenza in your local area, from CDC surveillance data.