The Placer Mosquito Abatement District will conduct ground spraying in south Roseville for three days beginning Tuesday in an effort to reduce the spread of West Nile virus.
Weather permitting, the spraying by truck will occur between 1 and 4 a.m.
Roseville residents will be notified, through the city's automated telephone system, at least two days before technicians begin spraying in their areas .
Concerns about exposure to the virus also prompted Performing Arts of Roseville to cancel tonight's Music in the Park concert in Royer Park.
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"The best way to prevent West Nile virus is to avoid being bitten by mosquitoes," Placer Mosquito Abatement District director Charlie Dill said in a statement released Friday.
"The district is strongly recommending that events which put people at risk be postponed or canceled while the virus is present in the area."
So far, there have been 10 confirmed human cases of the virus in Placer County: eight in Roseville and one each in the cities of Rocklin and Lincoln.
More than 60 dead birds also have tested positive for West Nile virus, as have 11 horses and two squirrels. The virus also has been detected in mosquitos breeding in 18 pools of water in Placer County.
District officials last week assured residents at a community forum in Roseville that they won't conduct aerial spraying in populated areas.
Technicians will drive along residential streets in two trucks, spraying the pesticide Pyrenone 25-5, an ultra-low volume fog that rapidly breaks down when exposed to air and sunlight.
The spraying is set to take place in three sections:
* The first area, to be sprayed Tuesday, is bounded by Vernon Street, the Placer County line, Sunrise Avenue and Douglas Boulevard.
* The second area, to be sprayed Wednesday, is bounded by Harding-Galleria Boulevard, Douglas Boulevard, Vernon Street, Washington Boulevard, Pleasant Grove Boulevard and Roseville Parkway.
* The third area, to be sprayed Thursday, is bounded by Washington, Pleasant Grove and Foothills boulevards, Cirby Way and Vernon Street.
Roseville and South Placer County residents wishing to be placed on Placer Mosquito Abatement District's "No Spray" list should notify the district, preferably by e-mail at email@example.com, or call the district beginning Monday at (916) 435-2140 and provide their name, telephone number and address.
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