2013 West Nile Virus Activity

 

This map details mosquitoes, dead birds, chickens, and horses that have tested positive for West Nile virus. You can zoom in and out of the map and click on the placemarkers to get a detailed description of the date the positive activity was confirmed and the approximate location.

For information regarding human cases, please click here.

Mosquito Samples: 13

n Date Reported City Cross Streets Species
1 6/27/13 Discovery Bay Bixler Rd. x Point of Timber Rd. tarsalis
2 7/1/13 Discovery Bay Bixler Rd. x Point of Timber Rd. tarsalis
3 7/1/13 Discovery Bay Bixler Rd. x Point of Timber Rd. pipiens
4 7/8/13 Discovery Bay Cherry Hills Dr. pipiens
5 8/19/13 Brentwood Garin Pkwy. x Spruce St. tarsalis
6 8/20/13 Brentwood Garin Pkwy. x Sunset Rd. tarsalis
7 8/20/13 Brentwood Silverton Wy. x Cambrian Pl. pipiens
8 8/20/13 Brentwood Eastwood Ct. x St. Regis Ave. pipiens
9 8/20/13 Brentwood Garin Pkwy. x Spruce St. pipiens
10 8/21/13 Brentwood Garin Pkwy. x Spruce St. tarsalis
11 8/26/13 Brentwood Garin Pkwy. x Sunset Rd. tarsalis
12 8/26/13 Brentwood Garin Pkwy. x Sunset Rd. pipiens
13 9/16/13 Antioch 8th St. x A St. tarsalis

Dead Birds: 68

n Date Reported City Cross Streets Species
1 6/26/13 Antioch Yellowstone Dr. x Hillcrest Ave. American Crow
2 7/2/13 Brentwood Marsh Creek Rd. x Byron Hwy American Crow
3 7/8/13 Brentwood Balfour Rd. x Walnut Blvd. American Crow
4 7/10/13 Concord Concord Blvd. x Baily Rd. American Crow
5 7/12/13 Alamo Danville Blvd. x Camille Ave. American Crow
6 7/17/13 Pittsburg West Leland Rd. x Crestview Dr. American Crow
7 7/22/13 Pittsburg Railroad Ave. x Buchanan Rd. American Crow
8 7/21/13 Concord Clayton Rd. x Denkinger Rd. American Crow
9 7/22/13 Brentwood Sand Creek Rd. x Minnesota Ave. American Crow
10 7/22/13 Oakley Laurel Rd. x Main St. American Crow
11 7/11/13 Antioch West 11th St. x H St. Western Scrub Jay
12 7/28/13 Walnut Creek Buena Vista Ave. x 1st Ave. American Crow
13 7/18/13 Antioch Hillcrest Ave. x Via Dora Dr. Western Scrub Jay
14 7/29/13 Pittsburg Willow Pass Rd. x Seasons Dr. Western Scrub Jay
15 7/29/13 Danville Greenbrook Dr. x Camino Ramon American Crow
16 7/30/13 Brentwood Sunset Rd. x Byron Hwy American Crow
17 7/31/13 Walnut Creek Treat Blvd. x Bancroft Rd. American Crow
18 7/31/13 Concord Colfax St. x Clayton Rd. American Crow
19 7/31/13 Danville Greenbrook Dr. x Camino Ramon American Crow
20 8/1/13 Walnut Creek Walnut Ave. x Las Lomas Wy Western Scrub Jay
21 8/1/13 Discovery Bay Bixler Rd. x Marsh Creek Rd. American Crow
22 8/2/13 Brentwood Sunset Rd. x North Eden Plains Rd. American Crow
23 8/2/13 Brentwood Eagle Ln. x Byron Hwy American Crow
24 8/4/13 Brentwood 2nd St. x Brentwood Blvd. American Crow
25 8/5/13 Discovery Bay Bixler Rd. x Hwy 4 American Crow
26 8/5/13 Pittsburg Loveridge Rd. x Buchanan Rd. American Crow
27 7/24/13 Brentwood Fairview Ave. x Central Blvd. American Crow
28 7/24/13 Brentwood Balfour Rd. x Sellers Ave. American Crow
29 7/30/13 Antioch 8th St. x A St. Red-Shouldered Hawk
30 8/7/13 Pittsburg Meadows Ave. x Buchanan Rd. American Crow
31 8/6/13 Walnut Creek Buena Vista Ave. x 1st Ave. American Crow
32 8/7/13 Brentwood Balfour Rd. x Guthrie Ln. American Crow
33 8/8/13 Martinez Church St. x Pleasant Hill Rd. Western Scrub Jay
34 8/2/13 Antioch Delta Fair Blvd. x Belle Dr. American Crow
35 8/6/13 Bethel Island Piper Rd. x Gateway Rd. Swainson's Hawk
36 8/12/13 Oakley Oakley Rd. x Neroly Rd. American Crow
37 8/13/13 Brentwood O'Hara Ave. x Lone Tree Wy. Western Scrub Jay
38 8/14/13 Brentwood Chestnut St. x Garin Pkwy American Crow
39 8/15/13 Concord Clayton Rd. x Ygnacio Valley Rd American Crow
40 8/19/13 Antioch Sycamore St. x L St. American Crow
41 8/19/13 Concord Orange St. x Apple Dr. American Crow
42 8/19/13 Martinez Alhambra Valley Rd. x Vaca Creek Rd. American Crow
43 8/20/13 Antioch Prewett Ranch Dr. x Mokelumne Dr. American Crow
44 8/20/13 Brentwood Sycamore Ave. x Brentwood Blvd. American Crow
45 8/20/13 Concord Diamond Blvd. x Galaxy Wy. American Crow
46 8/21/13 Walnut Creek First Ave. Buena Vista Ave. American Crow
47 8/26/13 Brentwood Jennifer St. x Garin Pkwy. American Crow
48 8/14/13 Brentwood Newton Dr. x Apple Hill Dr. Western Scrub Jay
49 8/14/13 Brentwood Sand Creek Rd. x Highland Wy. American Crow
50 8/26/13 Oakley Quail Valley Run x Laurel Rd. American Crow
51 8/27/13 Brentwood Sellers Ave. x Sunset Rd. American Crow
52 8/27/13 Concord Kirker Pass Rd. x Concord Blvd. American Crow
53 8/28/13 Pittsburg W. Leland Rd. x Burton Ave. Western Scrub Jay
54 8/29/13 Bethel Island Sugar Barge Rd. x Riverview Dr. American Crow
55 8/21/13 Brentwood Sunset Rd. x Brentwood Blvd. American Crow
56 9/4/13 Brentwood Garin Pkwy. x Balfour Rd. American Crow
57 9/5/13 Lafayette Holland Dr. x Pleasant Hill Rd. Western Scrub Jay
58 9/5/13 Danville Bradford Pl. x Del Amigo Rd. American Crow
59 9/5/13 Antioch W 10th St. x L St. American Crow
60 9/5/13 Danville Diablo Rd. x El Cerro Blvd. American Crow
61 9/8/13 Concord Thornwood Dr. x Clayton Rd. American Crow
62 9/9/13 Lafayette Sweet Dr. x Carlyle Terr. Western Scrub Jay
63 9/18/13 Brentwood Eagle Rock Ave. x Foothill Dr. Western Scrub Jay
64 9/23/13 Martinez Center Ave. x Muir Rd. American Crow
65 10/1/13 Walnut Creek Beacon Ridge Ln. x Green Valley Dr. Western Scrub Jay
66 10/3/13 Concord Elario Ln. x Kaski Ln. Western Scrub Jay
67 10/4/13 Pleasant Hill Oak Park Blvd. x Pleasant Hill Rd. American Crow
68 10/11/13 Alamo Golden Grass Dr. x Stone Valley Rd American Crow

Sentinel Chicken Flocks: 3

#/10 Date Bleed Area
3/10 8/12/13 Holland Tract
1/10 8/12/13 Oakley
1/10 8/26/13 Holland Tract
1/10 9/9/13 Holland Tract
1/10 9/23/13 Martinez

Horses: 0

n Date Reported City Dead/Euthanized
 
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