2019 West Nile Virus Activity
This map details mosquitoes, dead birds, chickens, and horses that have tested positive for West Nile virus. You can zoom in and out of the map and click on the placemarkers to get a detailed description of the date the positive activity was confirmed and the approximate location.
For information regarding human cases, please click here.
Mosquito Samples: 1
| n | Date Collected | City | Cross Streets | Species |
|---|---|---|---|---|
| 1 | 10/28/19 | Martinez | I-680 x Waterfront Rd | Culex tarsalis |
Dead Birds: 1
| n | Date Reported | City | Cross Streets | Species |
|---|---|---|---|---|
| 1 | 9/3/19 | Danville | Tweed Drive x Old Orchard Drive | American Crow |
Sentinel Chicken Flocks: 1
| #/10 | Date Bleed | Area |
|---|---|---|
| 1 | 8/26/19 | Holland Tract |
| 1 | 9/23/19 | Holland Tract |
Note: Chickens do not die from West Nile virus. They develop antibodies to the virus which is detected in their blood.
Horses: 0
| n | Date Reported | City | Dead/Euthanized |
|---|---|---|---|