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-
Butte-
Calaveras-
Colusa-
Contra Costa-
Del Norte-
El Dorado-
Fresno-
Glenn-
Humboldt-
Imperial-
Inyo-
Kern-
Kings-
Lake-
Lassen-
Los Angeles-
Madera-
Marin-
Mariposa-
Mendocino-
Merced-
Modoc-
Mono-
Monterey-
Napa-
Nevada-
Orange1
Placer-
Plumas-
Riverside-
Sacramento1
San Benito-
San Bernardino-
San Diego1
San Francisco-
San Joaquin-
San Luis Obispo-
San Mateo1
Santa Barbara-
Santa Clara-
Santa Cruz-
Shasta-
Sierra-
Siskiyou-
Solano-
Sonoma-
Stanislaus-
Sutter-
Tehama-
Trinity-
Tulare-
Tuolumne-
Ventura-
Yolo-
Yuba-
Total4

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

Reports and Analyses

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

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

As of May 19, 2017201720165Y AVG
Counties998
Human cases100
Dead birds42520
Mosquito samples81911
Sentinel chickens000
YTD - Year to date corresponds to the same time last year or last five years.

- view all 2016 YTD activity -

WNV Reports

Weekly Report

05.19 Arbovirus Bulletin #7
05.19 2017 YTD WNV Activity Map
05.12 Arbovirus Bulletin #6

Humans

02.08 2016 Human WNV Incidence Report
02.08 2003-2016 WNV Case Summary
03.21 2015 Human WNV Incidence Report

Dead Birds

05.19Positive Counts by City/County for 2017
05.19Positive Species for 2017
05.19Reported, Tested, Positive 2017

Mosquitoes

05.19 AMOR - EVS Week 19
05.19 AMOR - GRAVID Week 19
05.19 AMOR - NJLT Week 19
- view report archives -