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

Case Counts by County

CountyDead birds
Alameda10
Alpine-
Amador-
Butte1
Calaveras-
Colusa-
Contra Costa3
Del Norte-
El Dorado2
Fresno-
Glenn-
Humboldt1
Imperial-
Inyo-
Kern-
Kings-
Lake-
Lassen-
Los Angeles4
Madera-
Marin-
Mariposa-
Mendocino-
Merced-
Modoc-
Mono-
Monterey-
Napa-
Nevada-
Orange1
Placer19
Plumas-
Riverside3
Sacramento181
San Benito-
San Bernardino-
San Diego-
San Francisco-
San Joaquin7
San Luis Obispo-
San Mateo2
Santa Barbara-
Santa Clara26
Santa Cruz2
Shasta-
Sierra-
Siskiyou-
Solano-
Sonoma-
Stanislaus1
Sutter3
Tehama-
Trinity-
Tulare-
Tuolumne-
Ventura-
Yolo19
Yuba-
Total285

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

Weekly Reports

2018-08-132018 YTD SLEV Activity Map
2018-08-132018 YTD WNV Activity Map
2018-08-10Arbovirus Bulletin #19
2018-08-072018 US Arboviral Activity Update
2018-08-03Arbovirus Bulletin #18
2018-07-27Arbovirus Bulletin #17
2018-07-20Arbovirus Bulletin #16
2018-07-13Arbovirus Bulletin #15
2018-07-06Arbovirus Bulletin #14
2018-06-29Arbovirus Bulletin #13
- view full list of Weekly Reports -

Humans

2018-08-092003-2018 WNV Case Summary
2018-08-092018 Human WNV Incidence Report
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
- view full list of Humans -

Dead Birds

2018-08-10Reported, Tested, Positive 2018
2018-08-10Positive Counts by City/County for 2018
2018-08-10Positive Species for 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

2018-08-10AMOR - NJLT 5 Year Average Week 31
2018-08-10AMOR - EVS Week 31
2018-08-10AMOR - GRAVID Week 31
2018-08-10AMOR - NJLT Week 31
2018-08-03AMOR - NJLT 5 Year Average Week 30
2018-08-03AMOR - EVS Week 30
2018-08-03AMOR - GRAVID Week 30
2018-08-03AMOR - NJLT Week 30
2018-07-27AMOR - NJLT 5 Year Average Week 29
2018-07-27AMOR - NJLT Week 29
- view full list of Mosquitoes -

Horses

2018-08-102016 Confirmed Equine Cases Report
2018-08-102015 Confirmed Equine Cases Report
2018-08-102014 Confirmed Equine Cases Report
2018-08-102013 Confirmed Equine Cases Report
2018-08-102012 Confirmed Equine Cases Report
2018-08-102011 Confirmed Equine Cases Report
2018-08-102017 Confirmed Equine Cases Report
2010-12-162010 Confirmed Equine Cases Report
2010-12-162010 Equine WNV Result Map
2010-05-262009 Equine WNV Result Map
- view full list of Horses -

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 Aug 10, 2018201820175Y AVG
Counties333136
Human cases192232
Dead birds285172657
Mosquito samples94218051679
Sentinel chickens3858113
YTD - Year to date corresponds to the same time last year or last five years.

- view all 2018 YTD activity -

WNV Reports

Weekly Report

08.13 2018 YTD SLEV Activity Map
08.13 2018 YTD WNV Activity Map
08.10 Arbovirus Bulletin #19

Humans

08.09 2018 Human WNV Incidence Report
08.09 2003-2018 WNV Case Summary
03.29 2017 Human WNV Incidence Report

Dead Birds

08.10Reported, Tested, Positive 2018
08.10Positive Species for 2018
08.10Positive Counts by City/County for 2018

Mosquitoes

08.10 AMOR - EVS Week 31
08.10 AMOR - GRAVID Week 31
08.10 AMOR - NJLT Week 31
- view report archives -