First Human Case of West Nile Reported in McHenry County

West Nile has been detected in a human in Louisville.

Since 2000, a total of 131 human cases of West Nile have been diagnosed in CT residents, and three people have died. All cases have occurred in adults, according to a state news release.

No human cases of West Nile virus have yet been diagnosed. Mosquitoes become infected when they feed on infected birds.

In response, the Allegheny County Health Department (ACHD) will treat those areas using a truck-mounted, Ultra Low Volume (ULV) sprayer Wednesday, August 23, between 8-10 p.m. The symptoms begin between three to 15 days after being bitten by an infected mosquito.

She said residents could take precautions such as wearing bug repellant outside at dusk and dawn and removing standing water from around homes.

When used as directed, insect repellent is the best way to protect yourself from mosquito bites.

Officials say people venturing outdoors should wear light-coloured clothing, long sleeves and trousers, and use insect repellant containing DEET or icaridin. Still, people are urged to examine themselves and their pets after being outdoors – especially in long grasses. Permethrin products are intended for use on items such as clothing, shoes, bed nets and camping gear and should not be applied to skin.

To reduce the number of and the exposure to mosquitoes, ensure window and door screens fit well, are in good condition and remain closed. UDOH epidemiologist Keegan McCaffrey warns, “There is no vaccine for humans”. People with these symptoms should see a healthcare provider immediately.

Mosquitoes tested positive this season for West Nile Virus in 20 towns throughout CT. Four horses have tested positive Bourbon, Franklin, Hart and Russell counties.

Various locations are also being monitored to decrease the chances of West Nile infection.

Horse owners should be reminded to contact their veterinarian to vaccinate their animals.

On Thursday, the district sent another 235 mosquito pools to the Oregon State University Veterinary Diagnostic Lab in Corvallis for further testing. Local health departments set traps to collect mosquitoes.

West Nile Virus is transmitted through bites of infected mosquitoes and can potentially be deadly, though most people show few or no symptoms.