Case Counts by County

CountyDead birds
Alameda5
Alpine-
Amador-
Butte8
Calaveras-
Colusa3
Contra Costa2
Del Norte-
El Dorado1
Fresno-
Glenn3
Humboldt1
Imperial-
Inyo-
Kern1
Kings1
Lake-
Lassen-
Los Angeles2
Madera1
Marin1
Mariposa-
Mendocino-
Merced1
Modoc-
Mono-
Monterey-
Napa-
Nevada-
Orange5
Placer1
Plumas-
Riverside9
Sacramento21
San Benito-
San Bernardino1
San Diego62
San Francisco-
San Joaquin6
San Luis Obispo-
San Mateo4
Santa Barbara-
Santa Clara45
Santa Cruz-
Shasta3
Sierra-
Siskiyou-
Solano4
Sonoma2
Stanislaus8
Sutter9
Tehama-
Trinity-
Tulare16
Tuolumne-
Ventura1
Yolo16
Yuba4
Total247

WNV Activity by County
Printable Version
2015 | 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 previous year and previous five-year average to date

As of Jul 24, 2015201520145Y AVG
Counties353325
Human cases1135
Dead birds247710308
Mosquito samples756771477
Sentinel chickens431418
YTD - Year to date corresponds to the same time last year or last five years.

- view all 2014 YTD activity -

WNV Reports

Weekly Report

07.28 2015 US Arboviral Activity Update
07.27 2015 YTD WNV Activity Map
07.24 Arbovirus Bulletin #21

Humans

07.24 2003-2015 WNV Case Summary
07.22 2015 Human WNV Incidence Report
03.09 2014 Human WNV Incidence Report

Dead Birds

07.27Positive Species for 2015
07.27Positive Counts by City/County for 2015
07.27Reported, Tested, Positive 2015

Mosquitoes

07.17 AMOR - EVS Week 27
07.17 AMOR - GRAVID Week 27
07.17 AMOR - NjLT Week 27
- view report archives -