CA Dept. of Public Health UC Davis Arbovirus Research and Training Mosquito and Vector Control Assoc. of CA

Case Counts by County

CountyDead birds
Alameda-
Alpine-
Amador-
Butte1
Calaveras-
Colusa-
Contra Costa1
Del Norte-
El Dorado-
Fresno10
Glenn-
Humboldt-
Imperial-
Inyo-
Kern2
Kings-
Lake-
Lassen-
Los Angeles53
Madera-
Marin-
Mariposa-
Mendocino-
Merced3
Modoc-
Mono-
Monterey-
Napa-
Nevada-
Orange50
Placer3
Plumas-
Riverside5
Sacramento44
San Benito-
San Bernardino4
San Diego2
San Francisco-
San Joaquin5
San Luis Obispo-
San Mateo-
Santa Barbara-
Santa Clara8
Santa Cruz-
Shasta1
Sierra-
Siskiyou-
Solano-
Sonoma-
Stanislaus4
Sutter-
Tehama-
Trinity-
Tulare17
Tuolumne1
Ventura2
Yolo7
Yuba3
Total226

WNV Activity by County
Printable Version
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2013 | 2012 | 2011
2010 | 2009 | 2008
2007

Educational Materials

Easy to Read Repellent Use Information in Spanish

May 8, 2007

Downloads


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Compared to previous year and previous five-year average to date

As of Dec 20, 2019201920185Y AVG
Counties344134
Human cases214203372
Dead birds226501742
Mosquito samples328819632437
Sentinel chickens139163252
YTD - Year to date corresponds to the same time last year or last five years.

- view all 2019 YTD activity -

WNV Reports

Weekly Report

12.20 2019 YTD WNV Activity Map
12.06 Arbobulletin #35
11.22 Arbobulletin #34

Humans

12.19 2019 Human WNV Incidence Report
12.19 2003-2019 WNV Case Summary
05.15 2018 Human WNV Incidence Report

Dead Birds

12.20Positive Counts by City/County for 2019
12.20Positive Species for 2019
12.20Reported, Tested, Positive 2019

Mosquitoes

10.04 AMOR - EVS Week 39
10.04 AMOR - GRAVID Week 39
10.04 AMOR - NJLT Week 39
- view report archives -