Case Counts by County
| County | Human cases | | Alameda | - | | Alpine | - | | Amador | - | | Butte | - | | Calaveras | - | | Colusa | - | | Contra Costa | - | | Del Norte | - | | El Dorado | - | | Fresno | - | | Glenn | - | | Humboldt | - | | Imperial | - | | Inyo | - | | Kern | - | | Kings | - | | Lake | - | | Lassen | - | | Los Angeles | - | | Madera | - | | Marin | - | | Mariposa | - | | Mendocino | - | | Merced | - | | Modoc | - | | Mono | - | | Monterey | - | | Napa | - | | Nevada | - | | Orange | - | | Placer | - | | Plumas | - | | Riverside | - | | Sacramento | - | | San Benito | - | | San Bernardino | - | | San Diego | - | | San Francisco | - | | San Joaquin | - | | San Luis Obispo | - | | San Mateo | - | | Santa Barbara | - | | Santa Clara | - | | Santa Cruz | - | | Shasta | - | | Sierra | - | | Siskiyou | - | | Solano | - | | Sonoma | - | | Stanislaus | - | | Sutter | - | | Tehama | - | | Trinity | - | | Tulare | - | | Tuolumne | - | | Ventura | - | | Yolo | - | | Yuba | - |
| Total | 0 |
| County | Horses | | Alameda | - | | Alpine | - | | Amador | - | | Butte | - | | Calaveras | - | | Colusa | - | | Contra Costa | - | | Del Norte | - | | El Dorado | - | | Fresno | - | | Glenn | - | | Humboldt | - | | Imperial | - | | Inyo | - | | Kern | - | | Kings | - | | Lake | - | | Lassen | - | | Los Angeles | - | | Madera | - | | Marin | - | | Mariposa | - | | Mendocino | - | | Merced | - | | Modoc | - | | Mono | - | | Monterey | - | | Napa | - | | Nevada | - | | Orange | - | | Placer | - | | Plumas | - | | Riverside | - | | Sacramento | - | | San Benito | - | | San Bernardino | - | | San Diego | - | | San Francisco | - | | San Joaquin | - | | San Luis Obispo | - | | San Mateo | - | | Santa Barbara | - | | Santa Clara | - | | Santa Cruz | - | | Shasta | - | | Sierra | - | | Siskiyou | - | | Solano | - | | Sonoma | - | | Stanislaus | - | | Sutter | - | | Tehama | - | | Trinity | - | | Tulare | - | | Tuolumne | - | | Ventura | - | | Yolo | - | | Yuba | - |
| Total | 0 |
| County | Dead birds | | Alameda | - | | Alpine | - | | Amador | - | | Butte | - | | Calaveras | - | | Colusa | - | | Contra Costa | - | | Del Norte | - | | El Dorado | - | | Fresno | - | | Glenn | - | | Humboldt | - | | Imperial | - | | Inyo | - | | Kern | - | | Kings | - | | Lake | - | | Lassen | - | | Los Angeles | 1 | | Madera | - | | Marin | - | | Mariposa | - | | Mendocino | - | | Merced | - | | Modoc | - | | Mono | - | | Monterey | - | | Napa | - | | Nevada | - | | Orange | - | | Placer | - | | Plumas | - | | Riverside | - | | Sacramento | - | | San Benito | - | | San Bernardino | - | | San Diego | - | | San Francisco | - | | San Joaquin | - | | San Luis Obispo | - | | San Mateo | - | | Santa Barbara | - | | Santa Clara | - | | Santa Cruz | - | | Shasta | - | | Sierra | - | | Siskiyou | - | | Solano | - | | Sonoma | - | | Stanislaus | - | | Sutter | - | | Tehama | - | | Trinity | - | | Tulare | - | | Tuolumne | - | | Ventura | - | | Yolo | - | | Yuba | 1 |
| Total | 2 |
| County | Mosquito samples | | Alameda | - | | Alpine | - | | Amador | - | | Butte | - | | Calaveras | - | | Colusa | - | | Contra Costa | - | | Del Norte | - | | El Dorado | - | | Fresno | 1 | | Glenn | - | | Humboldt | - | | Imperial | - | | Inyo | - | | Kern | - | | Kings | - | | Lake | - | | Lassen | - | | Los Angeles | - | | Madera | - | | Marin | - | | Mariposa | - | | Mendocino | - | | Merced | - | | Modoc | - | | Mono | - | | Monterey | - | | Napa | - | | Nevada | - | | Orange | - | | Placer | - | | Plumas | - | | Riverside | - | | Sacramento | - | | San Benito | - | | San Bernardino | - | | San Diego | - | | San Francisco | - | | San Joaquin | - | | San Luis Obispo | - | | San Mateo | - | | Santa Barbara | - | | Santa Clara | - | | Santa Cruz | - | | Shasta | - | | Sierra | - | | Siskiyou | - | | Solano | - | | Sonoma | - | | Stanislaus | - | | Sutter | - | | Tehama | - | | Trinity | - | | Tulare | 1 | | Tuolumne | - | | Ventura | - | | Yolo | - | | Yuba | - |
| Total | 2 |
| County | Sentinel chickens | | Alameda | - | | Alpine | - | | Amador | - | | Butte | - | | Calaveras | - | | Colusa | - | | Contra Costa | - | | Del Norte | - | | El Dorado | - | | Fresno | - | | Glenn | - | | Humboldt | - | | Imperial | - | | Inyo | - | | Kern | - | | Kings | - | | Lake | - | | Lassen | - | | Los Angeles | - | | Madera | - | | Marin | - | | Mariposa | - | | Mendocino | - | | Merced | - | | Modoc | - | | Mono | - | | Monterey | - | | Napa | - | | Nevada | - | | Orange | - | | Placer | - | | Plumas | - | | Riverside | - | | Sacramento | - | | San Benito | - | | San Bernardino | - | | San Diego | - | | San Francisco | - | | San Joaquin | - | | San Luis Obispo | - | | San Mateo | - | | Santa Barbara | - | | Santa Clara | - | | Santa Cruz | - | | Shasta | - | | Sierra | - | | Siskiyou | - | | Solano | - | | Sonoma | - | | Stanislaus | - | | Sutter | - | | Tehama | - | | Trinity | - | | Tulare | - | | Tuolumne | - | | Ventura | - | | Yolo | - | | Yuba | - |
| Total | 0 |
| County | Squirrels | | Alameda | - | | Alpine | - | | Amador | - | | Butte | - | | Calaveras | - | | Colusa | - | | Contra Costa | - | | Del Norte | - | | El Dorado | - | | Fresno | - | | Glenn | - | | Humboldt | - | | Imperial | - | | Inyo | - | | Kern | - | | Kings | - | | Lake | - | | Lassen | - | | Los Angeles | - | | Madera | - | | Marin | - | | Mariposa | - | | Mendocino | - | | Merced | - | | Modoc | - | | Mono | - | | Monterey | - | | Napa | - | | Nevada | - | | Orange | - | | Placer | - | | Plumas | - | | Riverside | - | | Sacramento | - | | San Benito | - | | San Bernardino | - | | San Diego | - | | San Francisco | - | | San Joaquin | - | | San Luis Obispo | - | | San Mateo | - | | Santa Barbara | - | | Santa Clara | - | | Santa Cruz | - | | Shasta | - | | Sierra | - | | Siskiyou | - | | Solano | - | | Sonoma | - | | Stanislaus | - | | Sutter | - | | Tehama | - | | Trinity | - | | Tulare | - | | Tuolumne | - | | Ventura | - | | Yolo | - | | Yuba | - |
| Total | 0 |
WNV Activity by County Printable Version
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2012 |
2011 |
2010
2009 |
2008 |
2007
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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
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Locate Your Local Mosquito and Vector Control Agency
Compared to 2012 YTD
| As of May 16, 2013 | 2012 | 2013 |
| Counties | 6 | 4 |
| Human cases | 0 | 0 | | Horses | 0 | 0 | | Dead birds | 12 | 2 | | Mosquito samples | 1 | 2 | | Sentinel chickens | 0 | 0 | | Squirrels | 0 | 0 |
2012 YTD - Year to date corresponds to the same time last year.
- view all 2012 YTD activity -
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WNV Reports
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