Case Counts by County

CountyDead birds
Alameda92
Alpine-
Amador-
Butte22
Calaveras-
Colusa4
Contra Costa44
Del Norte-
El Dorado5
Fresno9
Glenn4
Humboldt2
Imperial-
Inyo-
Kern3
Kings3
Lake18
Lassen-
Los Angeles97
Madera5
Marin6
Mariposa-
Mendocino-
Merced8
Modoc-
Mono-
Monterey-
Napa12
Nevada-
Orange386
Placer40
Plumas-
Riverside1
Sacramento293
San Benito-
San Bernardino17
San Diego23
San Francisco-
San Joaquin53
San Luis Obispo-
San Mateo18
Santa Barbara1
Santa Clara897
Santa Cruz1
Shasta6
Sierra-
Siskiyou-
Solano33
Sonoma37
Stanislaus47
Sutter19
Tehama-
Trinity-
Tulare40
Tuolumne-
Ventura7
Yolo71
Yuba16
Total2340

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

News

West Nile virus Awareness week is April 22 - 28! Do You Know How to Fight the Bite?

Jan 2, 2003

West Nile Virus and Mosquito and Vector Control Awareness Week is April 22-28! West Nile Virus can easily be prevented -- check out this video with CDPH's Dr. Vicki Kramer for tips on protecting yourself and your family.

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 Oct 21, 2014201420135Y AVG
Counties404139
Human cases608297191
Dead birds23401198866
Mosquito samples326824891924
Sentinel chickens412463394
YTD - Year to date corresponds to the same time last year or last five years.

- view all 2013 YTD activity -

WNV Reports

Weekly Report

10.21 2014 YTD WNV Activity Map
10.17 Arbovirus Bulletin #35
10.10 Arbovirus Bulletin #34

Humans

10.21 2014 Human WNV Incidence Report
10.21 2003-2014 WNV Case Summary
08.12 2013 Human WNV Incidence Report

Dead Birds

10.21Reported, Tested, Positive 2014
10.21Positive Counts by City/County for 2014
10.21Positive Species for 2014

Mosquitoes

10.17 AMOR - EVS Week 41
10.17 AMOR - GRAVID Week 41
10.17 AMOR - NJLT Week 41
- view report archives -