For many people, springtime and warm temperatures mean a great time to be in Arizona, but mosquitos seem to think so, too.

Tonight, county and city officials are warning residents about the dangers of West Nile virus.

This virus is said to be easily transmitted to humans from mosquitos. Three people died from it in Tucson last year.

This year sources from the Pima County Health Department say they plan to attack the virus more aggressively.

Tucson’s Sweetwater wetlands are one of the most likely places to encounter mosquitos, or get bitten by one.

That is why Jack Kincaid came to this area. He is with the Pima County Health Department and one of his jobs is to set mosquito traps.

Kincaid says he usually starts setting traps after spring. Nevertheless, after last year’s mosquito season left three Tucsonans dead and 47 others infected with the West Nile virus, Pima County officials say they are not taking any chances.

The Health Department has already started a West Nile virus hotline where people can report any mosquito activity.

Rose Hylton, from the Pima County Health Department, says the calls they receive are “like non-stop the whole day, oh yeah.”

The hotline was activated this morning and Hylton says she answered 15 calls in just one hour.

“We do address every complaint we get,” she says.

Last year the county health department reports they received 1,300 mosquito complaints in a period of four months.

Kincaid says, “The trapping part of it is actually a break from the normal." He also says he has responded to about 20 mosquito complaints already.

“They’re gonna be lookin’ for the CO2 up here."

Kincaid and others are expected to set traps across Pima County to prevent the spread of West Nile virus this summer.

“They’re gonna be goin’ for that dry ice and by tomorrow we should see some good results,” Kincaid says.

If Tucson residents know of standing water, or other situations which could lead to mosquito development, the Pima County Health Department can be reached at (520) 243-7999.

People are even asked to call if dead birds are seen because they are a likely source for mosquitos to pick up the disease.