RSV-like illness accounts for 0.03% of emergency department visits in Arlington, Alexandria, Fairfax and 3 more counties for the week of September 20. RSV-like illness activity in Arlington, Alexandria, Fairfax and 3 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.