Case Counts by County

CountyDead birds
Alameda85
Alpine-
Amador-
Butte19
Calaveras-
Colusa4
Contra Costa38
Del Norte-
El Dorado3
Fresno9
Glenn4
Humboldt2
Imperial-
Inyo-
Kern3
Kings3
Lake16
Lassen-
Los Angeles57
Madera5
Marin3
Mariposa-
Mendocino-
Merced1
Modoc-
Mono-
Monterey-
Napa12
Nevada-
Orange291
Placer38
Plumas-
Riverside1
Sacramento271
San Benito-
San Bernardino12
San Diego7
San Francisco-
San Joaquin45
San Luis Obispo-
San Mateo14
Santa Barbara-
Santa Clara836
Santa Cruz1
Shasta5
Sierra-
Siskiyou-
Solano32
Sonoma19
Stanislaus39
Sutter19
Tehama-
Trinity-
Tulare40
Tuolumne-
Ventura4
Yolo63
Yuba16
Total2017

WNV Activity by County
Printable Version
2014 | 2013 | 2012
2011 | 2010 | 2009
2008 | 2007
All media inquiries, including requests for interviews, should be directed to the California Department of Public Health, Office of Public Affairs at 916-440-7259 or via email at CDPHPress@cdph.ca.gov.

News

WNV Dead Bird Hotline Update
CDPH Reports First Human West Nile Virus Case This Summer
Reporting a Dead Bird Video
Climate Change May Mean More Mosquitoes -- And Diseases
Mosquito Control Matters video (MVCAC)
CDPH Reports First Human West Nile Virus Case of 2011
WNV in CA 2011
CDPH REPORTS FIRST HUMAN WEST NILE VIRUS FATALITY OF 2010
CDPH REPORTS FIRST HUMAN WEST NILE VIRUS CASES OF 2010
At the Twilight's Last Gleam - Be Sure Repellent is on Your TEAM!
Summer is right around the corner
Don't Let The Summer Heat Make You Mosquito Meat!
Winter Rain Means Dump and Drain
Gov. Schwarzenegger Declares State of Emergency in Counties Hit Hardest by West Nile Virus
Rise in Cases of West Nile May Portend an Epidemic (NY Times)
West Nile Virus Activity Increases in California

Press Releases

West Nile Virus at Highest Level Ever in Mosquitoes
CDPH Reports First Human West Nile Virus Fatalities This Summer
CDPH Reports First Human West Nile Virus Infections This Season
First California Fatality from West Nile Virus in 2012
CDPH Reports First Human West Nile Virus Case of 2012
First Two California Fatalities From West Nile Virus in 2011
CDPH REPORTS FIRST CONFIRMED HUMAN WEST NILE VIRUS FATALITIES OF 2009
CALIFORNIA DEPARTMENT OF PUBLIC HEALTH ANNOUNCES FIRST DEATH FROM WEST NILE VIRUS IN 2008
First Confirmed Case of West Nile Virus in Horses for 2008
CALIFORNIA DEPARTMENT OF PUBLIC HEALTH ANNOUNCES FIRST CONFIRMED HUMAN WEST NILE VIRUS CASE IN 2008
CALIFORNIA DEPARTMENT OF PUBLIC HEALTH REMINDS CALIFORNIANS TO PROTECT THEMSELVES FROM MOSQUITOES THAT CARRY WNV
Governor Schwarzenegger Orders Enhancements to Fight West Nile Virus
Gov. Schwarzenegger Deploys Additional Resources to Fight West Nile Virus in Wetland Wildlife Areas
Gov. Schwarzenegger Announces Additional Emergency Funding to Fight West Nile Virus, Totals More Than $1.3 Million This Week
Gov. Schwarzenegger Announces Release of Emergency Funding to Fight West Nile Virus
CALIFORNIA DEPARTMENT OF PUBLIC HEALTH ANNOUNCES FIFTH DEATH THIS YEAR DUE TO WEST NILE VIRUS
CALIFORNIA DEPARTMENT OF PUBLIC HEALTH ANNOUNCES THIRD AND FOURTH DEATHS DUE TO WEST NILE VIRUS
CALIFORNIA DEPARTMENT OF PUBLIC HEALTH ANNOUNCES SECOND DEATH FROM WEST NILE VIRUS IN 2007
OFICIAL ESTATAL DE SALUD ANUNCIA LA PRIMER MUERTE EN CALIFORNIA A CONSECUENCIA DEL VIRUS DEL NILO OCCIDENTAL
CALIFORNIA DEPARTMENT OF PUBLIC HEALTH ANNOUNCES FIRST DEATH FROM WEST NILE VIRUS IN 2007
STATE HEALTH OFFICER ANNOUNCES FIRST CONFIRMED HUMAN CASE OF WEST NILE VIRUS IN CALIFORNIA THIS YEAR
EARLY ONSET OF WARM WEATHER TRIGGERS AN EARLY WEST NILE VIRUS SEASON

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

As of Sep 17, 2014201420135Y AVG
Counties384137
Human cases31115095
Dead birds20171067727
Mosquito samples285321731643
Sentinel chickens302330253
YTD - Year to date corresponds to the same time last year or last five years.

- view all 2013 YTD activity -

WNV Reports

Weekly Report

09.17 2014 YTD WNV Activity Map
09.16 2014 US Arboviral Activity Update
09.12 Arbovirus Bulletin #30

Humans

09.15 2014 Human WNV Incidence Report
09.15 2003-2014 WNV Case Summary
08.12 2013 Human WNV Incidence Report

Dead Birds

09.17Reported, Tested, Positive 2014
09.17Positive Counts by City/County for 2014
09.17Positive Species for 2014

Mosquitoes

09.12 AMOR - EVS Week 36
09.12 AMOR - GRAVID Week 36
09.12 AMOR - NJLT Week 36
- view report archives -