TWIN FALLS, Idaho (AP) -

Officials in Twin Falls County in south-central Idaho want other counties to start helping in the fight against a disease-spreading pest that can cause illness in livestock and humans.

County Pest Abatement District Director Kirk Tubbs tells The Times-News that Twin Falls County is the only county in Idaho taking measures to control black flies.

He says the tiny bugs that bite measure a sixteenth of an inch and have a range of 20 or 30 miles.

The flies carry a virus that mimics foot-and-mouth disease in animals and resembles influenza in humans.

Tubbs says controlling black flies is best done on a regional level by targeting larvae in canals and rivers before they hatch.

The county spends about $200,000 a year trying to control black flies.

___

Information from: The Times-News, http://www.magicvalley.com