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

Case Counts by County

CountyDead birds
Alameda2
Alpine-
Amador-
Butte5
Calaveras-
Colusa1
Contra Costa19
Del Norte-
El Dorado2
Fresno5
Glenn2
Humboldt1
Imperial-
Inyo-
Kern3
Kings1
Lake5
Lassen-
Los Angeles101
Madera1
Marin1
Mariposa-
Mendocino-
Merced1
Modoc-
Mono-
Monterey1
Napa-
Nevada1
Orange57
Placer4
Plumas-
Riverside41
Sacramento86
San Benito-
San Bernardino45
San Diego43
San Francisco1
San Joaquin7
San Luis Obispo6
San Mateo1
Santa Barbara1
Santa Clara15
Santa Cruz1
Shasta2
Sierra-
Siskiyou-
Solano4
Sonoma5
Stanislaus6
Sutter3
Tehama-
Trinity-
Tulare8
Tuolumne-
Ventura2
Yolo14
Yuba6
Total510

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

News

Summer is right around the corner

May 13, 2010

Longer days and warmer nights mean more outdoor activities for you and your family. It can also mean more chances of being bitten by mosquitoes carrying West Nile virus.

But protecting yourself from mosquito bites is easy. When spending time outdoors:


  • Know that dawn and dusk are the times of day when mosquitoes carrying WNV bite the most.
  • Apply a repellent containing DEET, picaridin, oil of lemon eucalyptus or IR3535 before going outside. Always follow the label directions carefully and reapply as necessary.
  • Wear long sleeved shirts and long pants.
  • For more information on mosquito repellents visit: http://www.cdc.gov/ncidod/dvbid/westnile/qa/insect_repellent.htm

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 29, 2017201720165Y AVG
Counties473933
Human cases502442481
Dead birds51013521279
Mosquito samples337135282545
Sentinel chickens305343344
YTD - Year to date corresponds to the same time last year or last five years.

- view all 2016 YTD activity -

WNV Reports

Weekly Report

01.16 2017 YTD WNV Activity Map
01.12 2017 YTD SLEV Activity Map
01.09 2017 US Arboviral Activity Update

Humans

12.14 2017 Human WNV Incidence Report
12.14 2003-2017 WNV Case Summary
02.08 2016 Human WNV Incidence Report

Dead Birds

01.16Positive Counts by City/County for 2017
01.16Positive Species for 2017
01.16Reported, Tested, Positive 2017

Mosquitoes

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