Case Counts by County

CountyDead birds
Alameda20
Alpine-
Amador-
Butte2
Calaveras-
Colusa1
Contra Costa20
Del Norte-
El Dorado1
Fresno7
Glenn1
Humboldt1
Imperial-
Inyo-
Kern2
Kings1
Lake5
Lassen-
Los Angeles10
Madera4
Marin2
Mariposa-
Mendocino-
Merced-
Modoc-
Mono-
Monterey-
Napa6
Nevada-
Orange59
Placer17
Plumas-
Riverside-
Sacramento162
San Benito-
San Bernardino2
San Diego1
San Francisco-
San Joaquin23
San Luis Obispo-
San Mateo5
Santa Barbara-
Santa Clara474
Santa Cruz1
Shasta2
Sierra-
Siskiyou-
Solano27
Sonoma8
Stanislaus18
Sutter13
Tehama-
Trinity-
Tulare35
Tuolumne-
Ventura1
Yolo22
Yuba5
Total958

WNV Activity by County
Printable Version
2014 | 2013 | 2012
2011 | 2010 | 2009
2008 | 2007

News

West Nile virus Awareness week is April 22 - 28! Do You Know How to Fight the Bite?

Jan 2, 2003

West Nile Virus and Mosquito and Vector Control Awareness Week is April 22-28! West Nile Virus can easily be prevented -- check out this video with CDPH's Dr. Vicki Kramer for tips on protecting yourself and your family.

Locate Your Local Mosquito and Vector Control Agency
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Compared to 2013 YTD

As of Jul 30, 201420132014
Counties3435
Human cases1419
Dead birds454958
Mosquito samples761978
Sentinel chickens7939
2013 YTD - Year to date corresponds to the same time last year.

- view all 2013 YTD activity -

WNV Reports

Weekly Report

07.30 2014 YTD WNV Activity Map
07.29 2014 US Arboviral Activity Update
07.25 Arbovirus Bulletin #23

Humans

07.26 2014 Human WNV Incidence Report
07.26 2003-2014 WNV Case Summary
04.21 2013 Human WNV Incidence Report

Dead Birds

07.30Reported, Tested, Positive 2014
07.30Positive Counts by City/County for 2014
07.30Positive Species for 2014

Mosquitoes

07.25 AMOR - EVS Week 29
07.25 AMOR - GRAVID Week 29
07.25 AMOR - NJLT Week 29

Horses

12.16 2010 Equine WNV Result Map
12.16 2010 Confirmed Equine Cases Report
05.26 2009 Equine WNV Result Map
- view report archives -