2018 SLEV Activity by County

(2024-12-13) - Source: http://westnile.ca.gov

CountyHuman CasesMosquito SamplesSentinel Chickens
State Totals53871
Alameda---
Alpine---
Amador---
Butte---
Calaveras---
Colusa---
Contra Costa---
Del Norte---
El Dorado---
Fresno156-
Glenn---
Humboldt---
Imperial-3-
Inyo---
Kern165-
Kings-30-
Lake---
Lassen---
Los Angeles21-
Madera-14-
Marin---
Mariposa---
Mendocino---
Merced--1
Modoc---
Mono---
Monterey---
Napa---
Nevada---
Orange---
Placer---
Plumas---
Riverside-56-
Sacramento---
San Benito---
San Bernardino---
San Diego---
San Francisco---
San Joaquin---
San Luis Obispo---
San Mateo---
Santa Barbara---
Santa Clara---
Santa Cruz---
Shasta---
Sierra---
Siskiyou---
Solano---
Sonoma---
Stanislaus1--
Sutter---
Tehama---
Trinity---
Tulare-162-
Tuolumne---
Ventura---
Yolo---
Yuba---
State Totals53871