The Canyon County Mosquito Abatement District is reporting its first West Nile Virus mosquito activity of 2013.
Officials said nine traps tested positive for West Nile based on trapping results from the Fourth of July holiday weekend. The traps were located near U.S. 95 and the Boise River, Roswell Marsh, Roswell Cemetery, two sites on Ballard Lane in Middleton and Channel Road east of Caldwell.
Hot weather has led to an increase in the numbers of the species of mosquito that is one the main carriers of the virus, officials said.
The abatement district recommends the following to avoid mosquito bites:
Cover exposed skin.
Wear repellant containing DEET.
Avoid outside activity between the hours of sunset and sunrise.
Drain any standing water.
There were no reported human cases in the county during 2012, officials said.