County | Reported* | Tested | Positive | % Tested Positive |
Alameda | 706 | 55 | - | - |
Alpine | 3 | - | - | - |
Amador | 110 | 8 | - | - |
Butte | 751 | 32 | 1 | 3% |
Calaveras | 129 | 13 | - | - |
Colusa | 46 | - | - | - |
Contra Costa | 2227 | 94 | 1 | 1% |
Del Norte | 27 | - | - | - |
El Dorado | 543 | 25 | 1 | 4% |
Fresno | 1232 | 69 | - | - |
Glenn | 92 | 4 | - | - |
Humboldt | 78 | 2 | - | - |
Imperial | 35 | - | - | - |
Inyo | 35 | 3 | - | - |
Kern | 1590 | 130 | 1 | 1% |
Kings | 133 | 6 | - | - |
Lake | 94 | 1 | - | - |
Lassen | 23 | - | - | - |
Los Angeles | 5535 | 208 | 25 | 12% |
Madera | 121 | 14 | - | - |
Marin | 219 | 16 | - | - |
Mariposa | 18 | 2 | - | - |
Mendocino | 79 | 6 | - | - |
Merced | 207 | 15 | - | - |
Modoc | 17 | - | - | - |
Mono | 11 | - | - | - |
Monterey | 272 | 11 | - | - |
Napa | 88 | - | - | - |
Nevada | 305 | 17 | 1 | 6% |
Orange | 2996 | 182 | 58 | 32% |
Placer | 724 | 9 | - | - |
Plumas | 57 | 8 | - | - |
Riverside | 1269 | 32 | 3 | 9% |
Sacramento | 3106 | 141 | 3 | 2% |
San Benito | 34 | 2 | - | - |
San Bernardino | 1554 | 58 | 5 | 9% |
San Diego | 1742 | 116 | 42 | 36% |
San Francisco | 105 | 7 | - | - |
San Joaquin | 1509 | 75 | 6 | 8% |
San Luis Obispo | 180 | 15 | - | - |
San Mateo | 389 | 40 | 1 | 3% |
Santa Barbara | 96 | 5 | - | - |
Santa Clara | 961 | 41 | 4 | 10% |
Santa Cruz | 163 | 9 | - | - |
Shasta | 406 | 12 | 5 | 42% |
Sierra | 16 | - | - | - |
Siskiyou | 21 | 1 | - | - |
Solano | 542 | 6 | - | - |
Sonoma | 495 | 45 | - | - |
Stanislaus | 938 | 53 | 2 | 4% |
Sutter | 179 | 6 | 2 | 33% |
Tehama | 137 | 8 | - | - |
Trinity | 14 | - | - | - |
Tulare | 754 | 87 | 22 | 25% |
Tuolumne | 92 | 2 | - | - |
Ventura | 553 | 35 | - | - |
Yolo | 534 | 16 | - | - |
Yuba | 103 | 4 | - | - |
State Totals | 34395 | 1746 | 183 | 10% |
* Birds in a die-off are not included in reported totals because the deaths are not related to WNV. A die-off is defined as a group of 10 or more same species dead birds unless the species is American Crow.
Source: Vector-Borne Disease Section, California Department of Public Health