2015 WNV Activity by County

(2021-08-04) - Source: http://westnile.ca.gov

Total Positive Counties: 41

CountyHuman CasesDead BirdsMosquito SamplesSentinel ChickensHorses
State Totals782134933294490
Alameda-1916--
Alpine-----
Amador-----
Butte53389437-
Calaveras-----
Colusa13-10-
Contra Costa111818-
Del Norte-----
El Dorado-4---
Fresno83108--
Glenn1942110-
Humboldt-2---
Imperial1----
Inyo-----
Kern111135--
Kings-3144--
Lake25314-
Lassen-----
Los Angeles286103294138-
Madera4121--
Marin13---
Mariposa-----
Mendocino2----
Merced13823-
Modoc-----
Mono-----
Monterey-----
Napa-7---
Nevada210-4-
Orange9283576--
Placer-21528-
Plumas-----
Riverside1278215822-
Sacramento41031642-
San Benito-----
San Bernardino532529136-
San Diego423554612-
San Francisco-----
San Joaquin218208--
San Luis Obispo-----
San Mateo-235--
Santa Barbara-31--
Santa Clara8231205-
Santa Cruz-----
Shasta3164822-
Sierra-----
Siskiyou1----
Solano11067-
Sonoma-1112--
Stanislaus1314849-
Sutter2165436-
Tehama5--18-
Trinity-2---
Tulare1323528--
Tuolumne-----
Ventura626-11-
Yolo8611736-
Yuba1062311-
State Totals782134933294490