2012 WNV Activity by County

(2017-06-23) - Source: http://www.westnile.ca.gov

Total Positive Counties: 41

CountyHuman CasesDead BirdsMosquito SamplesSentinel Chickens
State Totals47916442849540
Alameda215--
Alpine----
Amador----
Butte10532745
Calaveras----
Colusa35-6
Contra Costa466197
Del Norte----
El Dorado-5--
Fresno2425147-
Glenn71648
Humboldt----
Imperial1-410
Inyo----
Kern251457174
Kings32102-
Lake110234
Lassen----
Los Angeles163271339135
Madera3214-
Marin-1--
Mariposa----
Mendocino-6--
Merced1342414
Modoc----
Mono----
Monterey1---
Napa-11-
Nevada-3--
Orange429269-
Placer12601088
Plumas----
Riverside19513363
Sacramento3046648736
San Benito----
San Bernardino32395845
San Diego11--
San Francisco11--
San Joaquin1358169-
San Luis Obispo-1--
San Mateo-5--
Santa Barbara----
Santa Clara-203-
Santa Cruz-1--
Shasta136176
Sierra----
Siskiyou----
Solano22832
Sonoma-831
Stanislaus26512108
Sutter8291938
Tehama45--
Trinity----
Tulare75414411
Tuolumne----
Ventura73822
Yolo10981544
Yuba4111513
State Totals47916442849540