RSV-like illness accounts for 0.04% of emergency department visits in Kent, Gratiot, Ionia and 2 more counties for the week of September 20. RSV-like illness activity in Kent, Gratiot, Ionia and 2 more counties is holding steady compared with recent weeks. The highest reading in the current data window is 0.04%.

Emergency department visits for RSV (respiratory syncytial virus) in your local area, from CDC surveillance data.