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

Case Counts by County

CountyDead birds
Alameda2
Alpine-
Amador-
Butte5
Calaveras-
Colusa1
Contra Costa19
Del Norte-
El Dorado2
Fresno5
Glenn2
Humboldt1
Imperial-
Inyo-
Kern3
Kings1
Lake5
Lassen-
Los Angeles101
Madera1
Marin1
Mariposa-
Mendocino-
Merced1
Modoc-
Mono-
Monterey1
Napa-
Nevada1
Orange57
Placer4
Plumas-
Riverside41
Sacramento86
San Benito-
San Bernardino45
San Diego41
San Francisco1
San Joaquin7
San Luis Obispo6
San Mateo1
Santa Barbara1
Santa Clara12
Santa Cruz1
Shasta2
Sierra-
Siskiyou-
Solano4
Sonoma5
Stanislaus6
Sutter3
Tehama-
Trinity-
Tulare8
Tuolumne-
Ventura2
Yolo14
Yuba6
Total505

WNV Activity by County
Printable Version
2017 | 2016 | 2015 | 2014
2013 | 2012 | 2011
2010 | 2009 | 2008
2007

Reports and Analyses

2017-03-082016 YTD WNV Activity Map
2017-01-172016 US Arboviral Activity Update
2012-08-222011 West Nile virus Activity in California
2012-07-111999-2010 Total WNND cases by year
2011-07-111999-2011 Reported WNV Disease Cases in Humans
2010-08-222010 West Nile virus Activity in California
2009-08-222009 WNV Activity by County
2009-01-212008 WNV Activity Map
2009-01-212008 WNV Activity by County
2008-12-162004-2008 Comparative Line Graphs of West Nile Virus Activity
2008-03-072007 YTD WNV Activity Map
2008-01-282007 WNV Activity by County
2007-10-302003-2007 WNV Activity Summary
2007-03-262006 West Nile Virus Summary Presentation
2006-12-232006 West Nile Activity in California
2006-08-222006 Summary of WNV-Positive Surveillance Elements in CA 2006
2005-12-312005 West Nile Activity in California
2005-12-312005 West Nile Virus Summary Presentation
2004-12-312004 West Nile Virus Summary Presentation
2004-12-312004 West Nile Activity in California
2004-12-122004 WNV Agency Survey Report
2003-12-312003 West Nile Activity in California

Having problems with mosquitoes?

Locate your local mosquito and vector control agency
Search by Zip Code




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

As of Dec 11, 2017201720165Y AVG
Counties473841
Human cases489405525
Dead birds50513471600
Mosquito samples337035193112
Sentinel chickens305343451
YTD - Year to date corresponds to the same time last year or last five years.

- view all 2016 YTD activity -

WNV Reports

Weekly Report

12.11 2017 YTD WNV Activity Map
12.06 2017 YTD SLEV Activity Map
12.05 2017 US Arboviral Activity Update

Humans

11.30 2017 Human WNV Incidence Report
11.30 2003-2017 WNV Case Summary
02.08 2016 Human WNV Incidence Report

Dead Birds

12.11Positive Counts by City/County for 2017
12.11Positive Species for 2017
12.11Reported, Tested, Positive 2017

Mosquitoes

11.09 AMOR - EVS Week 44
11.09 AMOR - GRAVID Week 44
11.09 AMOR - NJLT Week 44
- view report archives -