2017 WNV Activity by County

(2018-04-25) - Source: http://www.westnile.ca.gov

Total Positive Counties: 44

CountyHuman CasesDead BirdsMosquito SamplesSentinel Chickens
State Totals5535103371305
Alameda12--
Alpine----
Amador----
Butte454731
Calaveras---1
Colusa-1--
Contra Costa41997
Del Norte----
El Dorado-2--
Fresno135167-
Glenn-2121
Humboldt-1--
Imperial3---
Inyo4-9-
Kern303152-
Kings5179-
Lake-5172
Lassen----
Los Angeles277101582145
Madera2162-
Marin-1--
Mariposa----
Mendocino----
Merced1014019
Modoc----
Mono----
Monterey-1--
Napa----
Nevada-1--
Orange3357280-
Placer-4595
Plumas----
Riverside3241196-
Sacramento6861532
San Benito---1
San Bernardino574529536
San Diego2439-
San Francisco11--
San Joaquin147242-
San Luis Obispo-6--
San Mateo-1--
Santa Barbara-114
Santa Clara-15--
Santa Cruz-1--
Shasta12-4
Sierra----
Siskiyou----
Solano14911
Sonoma-51-
Stanislaus286196-
Sutter331622
Tehama2--4
Trinity----
Tulare128630-
Tuolumne----
Ventura123-
Yolo614872
Yuba16188
State Totals5535103371305