County | Reported* | Tested | Positive | % Tested Positive |
Alameda | 1065 | 66 | 1 | 2% |
Alpine | 6 | - | - | - |
Amador | 112 | 13 | - | - |
Butte | 1045 | 44 | 1 | 2% |
Calaveras | 208 | 14 | - | - |
Colusa | 50 | - | - | - |
Contra Costa | 2042 | 155 | 3 | 2% |
Del Norte | 46 | 6 | - | - |
El Dorado | 441 | 34 | - | - |
Fresno | 2010 | 93 | 6 | 6% |
Glenn | 158 | 7 | - | - |
Humboldt | 147 | 15 | - | - |
Imperial | 11 | - | - | - |
Inyo | 47 | - | - | - |
Kern | 1888 | 77 | 23 | 30% |
Kings | 191 | 14 | - | - |
Lake | 145 | 10 | - | - |
Lassen | 84 | 7 | - | - |
Los Angeles | 2518 | 235 | 2 | 1% |
Madera | 158 | 13 | - | - |
Marin | 455 | 33 | - | - |
Mariposa | 49 | 6 | - | - |
Mendocino | 115 | 11 | - | - |
Merced | 484 | 25 | 1 | 4% |
Modoc | 19 | 1 | - | - |
Mono | 60 | - | - | - |
Monterey | 349 | 28 | - | - |
Napa | 139 | - | - | - |
Nevada | 326 | 14 | - | - |
Orange | 833 | 107 | 9 | 8% |
Placer | 1002 | 39 | - | - |
Plumas | 81 | 4 | - | - |
Riverside | 649 | 21 | - | - |
Sacramento | 5985 | 107 | 2 | 2% |
San Benito | 56 | 12 | - | - |
San Bernardino | 795 | 60 | 1 | 2% |
San Diego | 874 | 107 | 5 | 5% |
San Francisco | 161 | 14 | - | - |
San Joaquin | 1581 | 23 | - | - |
San Luis Obispo | 322 | 25 | - | - |
San Mateo | 585 | 60 | - | - |
Santa Barbara | 208 | 10 | - | - |
Santa Clara | 1998 | 95 | 17 | 18% |
Santa Cruz | 357 | 34 | - | - |
Shasta | 808 | 53 | 6 | 11% |
Sierra | 13 | - | - | - |
Siskiyou | 34 | 2 | - | - |
Solano | 602 | 5 | - | - |
Sonoma | 849 | 82 | - | - |
Stanislaus | 1465 | 93 | 24 | 26% |
Sutter | 255 | 1 | - | - |
Tehama | 199 | 13 | 1 | 8% |
Trinity | 60 | 2 | - | - |
Tulare | 572 | 24 | - | - |
Tuolumne | 146 | 7 | - | - |
Ventura | 628 | 66 | - | - |
Yolo | 648 | 39 | - | - |
Yuba | 120 | 6 | 1 | 17% |
State Totals | 36254 | 2032 | 103 | 5% |
* 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