Case Counts by County

CountyDead birds
Alameda5
Alpine-
Amador-
Butte17
Calaveras-
Colusa3
Contra Costa2
Del Norte-
El Dorado1
Fresno-
Glenn3
Humboldt2
Imperial-
Inyo-
Kern1
Kings1
Lake2
Lassen-
Los Angeles3
Madera1
Marin1
Mariposa-
Mendocino-
Merced1
Modoc-
Mono-
Monterey-
Napa-
Nevada1
Orange5
Placer4
Plumas-
Riverside16
Sacramento27
San Benito-
San Bernardino1
San Diego65
San Francisco-
San Joaquin7
San Luis Obispo-
San Mateo7
Santa Barbara-
Santa Clara49
Santa Cruz-
Shasta3
Sierra-
Siskiyou-
Solano4
Sonoma3
Stanislaus8
Sutter10
Tehama-
Trinity1
Tulare18
Tuolumne-
Ventura2
Yolo23
Yuba4
Total301

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

News

At the Twilight's Last Gleam - Be Sure Repellent is on Your TEAM!

Jul 1, 2010

Independence Day is upon us once again! Many of us will be celebrating America's "Birthday" in the evenings, outdoors, with fireworks, barbecues and family gatherings.

And you won't be alone! West Nile virus carrying mosquitoes could be celebrating with you! Reduce your chances of being bitten and infected with West Nile virus by following these few simple repellent guidelines:

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.

Use just enough repellent to cover exposed skin. Heavy application doesn't mean longer protection.

When using spray repellents do not spray directly on face--spray on hands first and then apply to face.

Do not allow children to handle the product. When using on children, apply to your own hands first and then put it on the child.

For more information on mosquito repellents and West Nile virus visit: http://www.cdc.gov/ncidod/dvbid/westnile/RepellentUpdates.htm

Locate Your Local Mosquito and Vector Control Agency
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Compared to previous year and previous five-year average to date

As of Jul 31, 2015201520145Y AVG
Counties363527
Human cases8187
Dead birds301875386
Mosquito samples1058977641
Sentinel chickens453938
YTD - Year to date corresponds to the same time last year or last five years.

- view all 2014 YTD activity -

WNV Reports

Weekly Report

07.31 Arbovirus Bulletin #22
07.31 2015 YTD WNV Activity Map
07.28 2015 US Arboviral Activity Update

Humans

07.29 2015 Human WNV Incidence Report
07.29 2003-2015 WNV Case Summary
03.09 2014 Human WNV Incidence Report

Dead Birds

07.31Positive Species for 2015
07.31Positive Counts by City/County for 2015
07.31Reported, Tested, Positive 2015

Mosquitoes

07.31 AMOR - EVS Week 29
07.31 AMOR - GRAVID Week 29
07.31 AMOR - NJLT Week 29
- view report archives -