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-
Butte1
Calaveras-
Colusa-
Contra Costa1
Del Norte-
El Dorado-
Fresno10
Glenn-
Humboldt-
Imperial-
Inyo-
Kern2
Kings-
Lake-
Lassen-
Los Angeles53
Madera-
Marin-
Mariposa-
Mendocino-
Merced3
Modoc-
Mono-
Monterey-
Napa-
Nevada-
Orange50
Placer3
Plumas-
Riverside5
Sacramento44
San Benito-
San Bernardino4
San Diego2
San Francisco-
San Joaquin5
San Luis Obispo-
San Mateo-
Santa Barbara-
Santa Clara8
Santa Cruz-
Shasta1
Sierra-
Siskiyou-
Solano-
Sonoma-
Stanislaus4
Sutter-
Tehama-
Trinity-
Tulare17
Tuolumne1
Ventura2
Yolo7
Yuba3
Total226

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

Weekly Reports

2019-12-20 2019 YTD WNV Activity Map
2019-12-06Arbobulletin #35
2019-11-22Arbobulletin #34
2019-11-152019 YTD SLEV Activity Map
2019-11-15Arbobulletin #33
2019-11-08Arbobulletin #32
2019-11-01Arbobulletin #31
2019-10-25Arbobulletin #30
2019-10-18Arbobulletin #29
2019-10-11Arbobulletin #28
- view full list of Weekly Reports -

Humans

2019-12-192003-2019 WNV Case Summary
2019-12-192019 Human WNV Incidence Report
2019-05-152018 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
- view full list of Humans -

Dead Birds

2019-12-20Positive Counts by City/County for 2019
2019-12-20Reported, Tested, Positive 2019
2019-12-20Positive Species for 2019
2019-04-08Positive Species for 2018
2019-04-08Positive Counts by City/County for 2018
2019-04-08Reported, Tested, Positive 2018
2018-02-16Positive Species for 2017
2018-02-16Positive Counts by City/County for 2017
2018-02-16Reported, Tested, Positive 2017
2017-03-30Positive Species for 2016
- view full list of Dead Birds -

Mosquitoes

2019-10-04AMOR - GRAVID Week 39
2019-10-04AMOR - NJLT Week 39
2019-10-04AMOR - EVS Week 39
2019-10-04AMOR - NJLT 5 Year Average Week 39
2019-09-27AMOR - GRAVID Week 38
2019-09-27AMOR - NJLT 5 Year Average Week 38
2019-09-27AMOR - NJLT Week 38
2019-09-27AMOR - EVS Week 38
2019-09-20AMOR - NJLT 5 Year Average Week 37
2019-09-20AMOR - EVS Week 37
- 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

2019-07-102018 US Arboviral Activity Update
2019-05-162018 YTD WNV Activity Map
2018-09-212017 US Arboviral Activity Update
2018-04-042017 YTD WNV Activity Map
2018-01-122017 YTD SLEV Activity Map
2017-03-082016 YTD WNV Activity Map
2017-01-172016 US Arboviral Activity Update
2015-04-022014 YTD WNV Activity Map
2013-02-252012 YTD WNV Activity Map
2012-12-112012 US Arboviral Activity Update
- view full list of Reports and Analyses -

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

As of Dec 20, 2019201920185Y AVG
Counties344134
Human cases214203372
Dead birds226501742
Mosquito samples328819632437
Sentinel chickens139163252
YTD - Year to date corresponds to the same time last year or last five years.

- view all 2019 YTD activity -

WNV Reports

Weekly Report

12.20 2019 YTD WNV Activity Map
12.06 Arbobulletin #35
11.22 Arbobulletin #34

Humans

12.19 2019 Human WNV Incidence Report
12.19 2003-2019 WNV Case Summary
05.15 2018 Human WNV Incidence Report

Dead Birds

12.20Positive Counts by City/County for 2019
12.20Positive Species for 2019
12.20Reported, Tested, Positive 2019

Mosquitoes

10.04 AMOR - EVS Week 39
10.04 AMOR - GRAVID Week 39
10.04 AMOR - NJLT Week 39
- view report archives -