Horse tests positive for West Nile virus in Contra Costa County (10-24-06)
Fogging for mosquitoes to be conducted Tuesday in Central Contra Costa County (10-9-06)
Fogging for mosquitoes to be conducted Friday morning on Bethel Island (10-4-06)
Fogging for mosquitoes to be conducted tomorrow morning on Bethel Island (9-28-06)
Fogging for mosquitoes to be conducted Thursday in Pittsburg (9-27-06)
Fogging for mosquitoes to be conducted Wednesday night in Martinez (9-26-06)
Fogging for mosquitoes to be conducted tonight along Contra Costa County waterfront (9-21-06)
Fogging for mosquitoes to be conducted Wednesday in Martinez and Waterfront (9-18-06)
Fogging for mosquitoes in Contra Costa County tonight (9-13-06)
West Nile virus positive mosquitoes trigger fogging in Pleasant Hill (8-30-06)
Chickens test positive for West Nile virus in Martinez, Oakley, and Holland Tract (8-24-06)
West Nile virus positive mosquitoes found in Contra Costa County (7-25-06)
West Nile virus positive mosquitoes found in Contra Costa County (7-20-06)
Fourth dead bird tests positive for West Nile virus in Contra Costa County (7-18-06)
Second dead bird tests positive for West Nile virus in Contra Costa County (7-12-06)
Dead bird tests positive for West Nile virus in Contra Costa County (7-5-06)