2019 WNV Activity by County

(2020-07-06) - Source: http://www.westnile.ca.gov

Total Positive Counties: 34

CountyHuman CasesHorsesDead BirdsMosquito SamplesSentinel Chickens
State Totals225152263288139
Alameda1----
Alpine-----
Amador1----
Butte5-14434
Calaveras-----
Colusa1---6
Contra Costa1-112
Del Norte-----
El Dorado-----
Fresno51210495-
Glenn---11
Humboldt-----
Imperial3--2-
Inyo-----
Kern2822128-
Kings3--63-
Lake---6-
Lassen-----
Los Angeles31-539428
Madera31-85-
Marin-----
Mariposa-----
Mendocino-----
Merced10134816
Modoc-----
Mono-----
Monterey-----
Napa-----
Nevada-----
Orange5-50208-
Placer1-3538
Plumas-----
Riverside1215524-
Sacramento4144744
San Benito----1
San Bernardino71452-
San Diego3-2--
San Francisco-----
San Joaquin715288-
San Luis Obispo2----
San Mateo-----
Santa Barbara-----
Santa Clara1-8--
Santa Cruz-----
Shasta--131
Sierra-----
Siskiyou-----
Solano1--54
Sonoma-----
Stanislaus1624203-
Sutter1--1511
Tehama----4
Trinity-----
Tulare2411781410
Tuolumne-11--
Ventura21213
Yolo1-7591
Yuba--3225
State Totals225152263288139