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-
Orange-
Placer-
Plumas-
Riverside-
Sacramento-
San Benito-
San Bernardino-
San Diego-
San Francisco-
San Joaquin-
San Luis Obispo-
San Mateo1
Santa Barbara-
Santa Clara2
Santa Cruz-
Shasta-
Sierra-
Siskiyou-
Solano-
Sonoma-
Stanislaus-
Sutter-
Tehama-
Trinity-
Tulare-
Tuolumne-
Ventura-
Yolo-
Yuba-
Total3

WNV Activity by County
Printable Version
2018 | 2017 | 2016 | 2015 | 2014
2013 | 2012 | 2011
2010 | 2009 | 2008
2007

Weekly Reports

2018-02-232018 YTD WNV Activity Map
2018-02-162018 YTD SLEV Activity Map
2018-02-022017 YTD WNV Activity Map
2018-01-122017 YTD SLEV Activity Map
2018-01-092017 US Arboviral Activity Update
2017-12-15Arbovirus Bulletin #35
2017-12-01Arbovirus Bulletin #34
2017-11-17Arbovirus Bulletin #33
2017-11-09Arbovirus Bulletin #32
2017-11-03Arbovirus Bulletin #31
- view full list of Weekly Reports -

Humans

2018-02-022003-2017 WNV Case Summary
2018-02-022017 Human WNV Incidence Report
2017-02-082016 Human WNV Incidence Report
2016-03-212015 Human WNV Incidence Report
2015-03-092014 Human WNV Incidence Report
2014-08-122013 Human WNV Incidence Report
2013-07-222012 Human WNV Surveillance Report
2013-03-182012 Human WNV Incidence Report
2012-06-132003-2011 WNV Case Summary by County
2012-04-262011 Human WNV Incidence Report
- view full list of Humans -

Dead Birds

2018-02-23Positive Species for 2018
2018-02-23Positive Counts by City/County for 2018
2018-02-23Reported, Tested, Positive 2018
2018-02-16Positive Species for 2017
2018-02-16Reported, Tested, Positive 2017
2018-02-16Positive Counts by City/County for 2017
2017-03-30Positive Species for 2016
2017-03-30Positive Counts by City/County for 2016
2017-03-30Reported, Tested, Positive 2016
2016-02-29Reported, Tested, Positive 2015
- view full list of Dead Birds -

Mosquitoes

2017-11-09AMOR - GRAVID Week 44
2017-11-09AMOR - NJLT Week 44
2017-11-09AMOR - EVS Week 44
2017-11-09AMOR - NJLT 5 Year Average Week 44
2017-11-03AMOR - EVS Week 43
2017-11-03AMOR - GRAVID Week 43
2017-11-03AMOR - NJLT Week 43
2017-11-03AMOR - NJLT 5 Year Average Week 43
2017-10-27AMOR - NJLT Week 42
2017-10-27AMOR - EVS Week 42
- view full list of Mosquitoes -

Horses

2010-12-162010 Confirmed Equine Cases Report
2010-12-162010 Equine WNV Result Map
2010-05-262009 Equine WNV Result Map
2009-10-242009 Confirmed Equine Cases
2008-11-102008 Confirmed Equine Cases
2007-10-042007 Equine WNV Result Map

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
- view full list of Reports and Analyses -

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

As of Feb 23, 2018201820175Y AVG
Counties232
Human cases000
Dead birds332
Mosquito samples000
Sentinel chickens000
YTD - Year to date corresponds to the same time last year or last five years.

- view all 2017 YTD activity -

WNV Reports

Weekly Report

02.23 2018 YTD WNV Activity Map
02.16 2018 YTD SLEV Activity Map
02.02 2017 YTD WNV Activity Map

Humans

02.02 2017 Human WNV Incidence Report
02.02 2003-2017 WNV Case Summary
02.08 2016 Human WNV Incidence Report

Dead Birds

02.23Reported, Tested, Positive 2018
02.23Positive Species for 2018
02.23Positive Counts by City/County for 2018

Mosquitoes

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