RSV-like illness accounts for 0.03% of emergency department visits in Frederick, Clarke, Shenandoah and 2 more counties for the week of October 4. RSV-like illness activity in Frederick, Clarke, Shenandoah and 2 more counties is holding steady compared with recent weeks. The highest reading in the current data window is 0.03%.

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