Case Counts by County

CountyDead birds
Alameda19
Alpine-
Amador-
Butte38
Calaveras-
Colusa3
Contra Costa11
Del Norte-
El Dorado4
Fresno3
Glenn4
Humboldt2
Imperial-
Inyo-
Kern1
Kings3
Lake5
Lassen-
Los Angeles103
Madera1
Marin3
Mariposa-
Mendocino-
Merced3
Modoc-
Mono-
Monterey-
Napa7
Nevada10
Orange83
Placer21
Plumas-
Riverside82
Sacramento103
San Benito-
San Bernardino25
San Diego355
San Francisco-
San Joaquin18
San Luis Obispo-
San Mateo23
Santa Barbara3
Santa Clara231
Santa Cruz-
Shasta16
Sierra-
Siskiyou-
Solano10
Sonoma11
Stanislaus14
Sutter16
Tehama-
Trinity2
Tulare23
Tuolumne-
Ventura26
Yolo61
Yuba6
Total1349

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

News

WNV in CA 2011

May 5, 2011

Want to know more about WNV in California? Watch the video below.




Having problems with mosquitoes?

Locate your local mosquito and vector control agency
Search by Zip Code




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

As of Dec 30, 2015201520145Y AVG
Counties414032
Human cases737801362
Dead birds134924421205
Mosquito samples332933402161
Sentinel chickens449443372
YTD - Year to date corresponds to the same time last year or last five years.

- view all 2014 YTD activity -

WNV Reports

Weekly Report

01.12 2015 US Arboviral Activity Update
01.12 2015 YTD WNV Activity Map
12.18 Arbovirus Bulletin #41

Humans

01.06 2015 Human WNV Incidence Report
01.06 2003-2015 WNV Case Summary
03.09 2014 Human WNV Incidence Report

Dead Birds

01.12Positive Species for 2015
01.12Positive Counts by City/County for 2015
01.12Reported, Tested, Positive 2015

Mosquitoes

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