2016 WNV Activity by County
Year To Date (Weeks 1 - 40)

(2018-09-18) - Source: http://www.westnile.ca.gov

Total Positive Counties: 38

CountyHuman CasesHorsesDead BirdsMosquito SamplesSentinel Chickens
State Totals309013073429314
Alameda--112-
Alpine-----
Amador-----
Butte21-224838
Calaveras-----
Colusa2---9
Contra Costa1-29105
Del Norte-----
El Dorado1-4--
Fresno9-6184-
Glenn5-41110
Humboldt-----
Imperial---1-
Inyo-----
Kern10--80-
Kings2-4118-
Lake1-4395
Lassen-----
Los Angeles105-112409106
Madera5-5100-
Marin--5--
Mariposa-----
Mendocino-----
Merced--51333
Modoc-----
Mono-----
Monterey1----
Napa--14-
Nevada--2-1
Orange23-81406-
Placer5-291037
Plumas-----
Riverside4-1631-
Sacramento20-409455-
San Benito-----
San Bernardino7-57920
San Diego12-257759
San Francisco-----
San Joaquin7-37348-
San Luis Obispo-----
San Mateo--135-
Santa Barbara-----
Santa Clara1-8613-
Santa Cruz--23-
Shasta1-3123
Sierra-----
Siskiyou-----
Solano2-131610
Sonoma--82-
Stanislaus19-13257-
Sutter10-106833
Tehama5---8
Trinity-----
Tulare7-3260-
Tuolumne-----
Ventura2-33--
Yolo12-712594
Yuba9-41813
State Totals309013073429314