CDC: 4 cases of West Nile virus in Minnesota


The Cascade City-County Health Department has confirmed Montana's first case of West Nile Virus (WNV) in a human this year.

The mosquito was found in a trap near the intersection of Lower Marine Road and Bass Drive on the East side of Troy.

Weekly mosquito testing for West Nile virus began statewide in June. Residents are encouraged to remove any items that can hold water, which can be a breeding ground for mosquitoes. Additional prevention measures include wearing long-sleeved shirts and long trousers to avoid bites, and draining any items that hold water inside and outside of homes, such as birdbaths, pools, trash containers, and buckets.

Drain: Mosquitoes lay their eggs on standing water.

According to the Centers of Disease Control and Prevention (CDC), WNV is commonly spread to humans by mosquito bites. These are the first two human cases of West Nile this season in the state.

The risk of West Nile virus infection is at a level not seen since 2012 when an outbreak infected 290 IL residents, the North Shore Mosquito Abatement District announced Thursday.

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Change the water in bird baths and pet dishes at least every three days.

Last year, there were 30 reported cases of West Nile virus in Minnesota.

Approximately 80 percent of those infected with the virus will not show any symptoms, but about one in 150 will develop a severe neuroinvasive illness that can include high fever, headache, neck stiffness, seizures and paralysis.

Be Aware of Peak Mosquito Hours - The hours from dusk to dawn are peak biting times for many mosquitoes.

Turn over objects that may trap water when not in use, such as wading pools and wheelbarrows. To report a sick or dead crow, blue jay, or raven, please call the Dead Bird Reporting Hotline at 800-433-1610.

For more information, visit the department's West Nile virus web page.