Spraying is scheduled to begin at dusk and continue until approximately 1 a.m. in the areas outlined in red, officials said. [Chicago Department of Health]

NORWOOD PARK — City crews will spray parts of Norwood Park, Forest Glen, Albany Park and North Park Tuesday in an effort to kill mosquitoes that could be carrying the West Nile Virus, officials said.

Spraying is scheduled to begin at dusk and continue until approximately 1 a.m., with licensed mosquito abatement technicians in trucks dispensing an ultra-low-volume spray of Zenivex, a chemical approved by federal officials to control mosquitoes in residential areas.

"When our mosquito traps indicate that the West Nile virus may pose health risks in a community, we take action quickly," said Chicago Department of Public Health Commissioner Dr. Julie Morita.

While the spray is not harmful to people or pets, residents of the areas where crews will spray might choose to stay indoors and close their windows while spraying is underway as an extra precaution, city officials said.

Only mosquitoes transmit the West Nile Virus, not human-to-human contact. [Justin Sullivan/Getty Images]

City health officials recommend people concerned about contracting West Nile from mosquitoes:

• Use insect repellent that contains DEET, Picaridin or Oil of Lemon Eucalyptus.

• Eliminate standing water near their home. This includes emptying water from flowerpots, gutters, pool covers, pet water dishes and birdbaths regularly.

• Keep grass and weeds short to eliminate hiding places for adult mosquitoes.

• When outside between dusk and dawn, wear loose-fitting, light colored clothing including long pants, long sleeve shirts, socks and shoes.

• Check that all screens, windows and doors are tight-fitting and free of holes and tears.

• Check on neighbors regularly who may need additional assistance, including the elderly.

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