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 Mateo2
Santa Barbara-
Santa Clara2
Santa Cruz-
Shasta-
Sierra-
Siskiyou-
Solano-
Sonoma-
Stanislaus-
Sutter-
Tehama-
Trinity-
Tulare-
Tuolumne-
Ventura-
Yolo-
Yuba-
Total4

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

Weekly Reports

2018-04-202018 YTD WNV Activity Map
2018-04-20Arbovirus Bulletin #3
2018-04-13Arbovirus Bulletin #2
2018-04-06Arbovirus Bulletin #1
2018-04-042017 YTD WNV Activity Map
2018-02-162018 YTD SLEV 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
- view full list of Weekly Reports -

Humans

2018-03-292003-2017 WNV Case Summary
2018-03-292017 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

2018-04-20Positive Species for 2018
2018-04-20Positive Counts by City/County for 2018
2018-04-20Reported, 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

2018-04-20AMOR - GRAVID Week 15
2018-04-20AMOR - NJLT Week 15
2018-04-20AMOR - EVS Week 15
2018-04-20AMOR - NJLT 5 Year Average Week 15
2018-04-13AMOR - NJLT 5 Year Average Week 14
2018-04-13AMOR - EVS Week 14
2018-04-13AMOR - GRAVID Week 14
2018-04-13AMOR - NJLT Week 14
2017-11-09AMOR - NJLT 5 Year Average Week 44
2017-11-09AMOR - EVS Week 44
- 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 Apr 20, 2018201820175Y AVG
Counties234
Human cases000
Dead birds438
Mosquito samples001
Sentinel chickens000
YTD - Year to date corresponds to the same time last year or last five years.

- view all 2018 YTD activity -

WNV Reports

Weekly Report

04.20 Arbovirus Bulletin #3
04.20 2018 YTD WNV Activity Map
04.13 Arbovirus Bulletin #2

Humans

03.29 2017 Human WNV Incidence Report
03.29 2003-2017 WNV Case Summary
02.08 2016 Human WNV Incidence Report

Dead Birds

04.20Reported, Tested, Positive 2018
04.20Positive Species for 2018
04.20Positive Counts by City/County for 2018

Mosquitoes

04.20 AMOR - EVS Week 15
04.20 AMOR - GRAVID Week 15
04.20 AMOR - NJLT Week 15
- view report archives -