WEST NILE VIRUS ACTIVITY

The Sacramento-Yolo Mosquito and Vector Control District’s ongoing surveillance program monitors for West Nile virus activity in Sacramento and Yolo counties. Current year data is shown below.

For Human and Equine cases, please visit westnile.ca.gov.

View the report in a new window formatted for a large screen.

View the report in a new window formatted for a mobile device screen.

If you see a bird, particularly a crow or magpie, lacking signs of trauma that has been dead for less than 24 hours, please call 1-877-WNV-BIRD (1-877-968-2473) or report it online here. Crows and magpies are particularly susceptible to the disease, so they make excellent early warning sentinels for virus activity in our area.

WNV IN YOUR AREA?

MAP OF WNV ACTIVITY

Click here to show confirmed positive samples of West Nile virus activity in Sacramento and Yolo counties to date.