2016 WNV Activity by County
Year To Date (Weeks 1 - 48)

(2018-12-09) - Source: http://www.westnile.ca.gov

Total Positive Counties: 38

CountyHuman CasesHorsesDead BirdsMosquito SamplesSentinel Chickens
State Totals405013473519343
Alameda--112-
Alpine-----
Amador-----
Butte21-224838
Calaveras-----
Colusa2---9
Contra Costa4-33115
Del Norte-----
El Dorado1-4--
Fresno11-6185-
Glenn5-41110
Humboldt-----
Imperial---1-
Inyo-----
Kern17--80-
Kings7-4118-
Lake1-5395
Lassen-----
Los Angeles142-124435126
Madera6-5101-
Marin--5--
Mariposa-----
Mendocino-----
Merced--51335
Modoc-----
Mono-----
Monterey1----
Napa--14-
Nevada--2-1
Orange32-88436-
Placer7-301037
Plumas-----
Riverside6-1632-
Sacramento24-4114553
San Benito-----
San Bernardino8-58223
San Diego17-262999
San Francisco-----
San Joaquin12-37350-
San Luis Obispo-----
San Mateo--155-
Santa Barbara-----
Santa Clara1-89131
Santa Cruz--23-
Shasta1-3123
Sierra-----
Siskiyou-----
Solano3-131610
Sonoma--82-
Stanislaus25-14258-
Sutter11-106833
Tehama5---8
Trinity-----
Tulare10-3260-
Tuolumne-----
Ventura2-34--
Yolo13-722594
Yuba10-41813
State Totals405013473519343