For the first time this year, a mosquito in the Las Vegas Valley tested positive for the West Nile virus, the Southern Nevada health district reported Friday.
The district's Mosquito Surveillance Program found the mosquito that carries the virus in the US 89122 postcode, near Clark County Wetlands Park in the southeastern Las Vegas Valley, according to a press release. No human cases of West Nile virus have been reported since Friday.
Mosquitoes that transmit the West Nile virus are most active at dawn and dusk, infecting infected birds. People who are bitten by the bloodsuckers often develop very mild or no symptoms. The mild symptoms include fever, headache, body aches, nausea, vomiting and occasionally swollen lymph glands or rashes on the chest, abdomen and back.
But West Nile virus can cause serious illness and death in some cases. The health district reported three cases of the virus in 201
The mosquitoes capable of transmitting the West Nile virus are not the same as those that can carry the Zika virus, which are active during the day. Mosquitoes capable of carrying Zika have been found in four postcodes in North Las Vegas since 2017, although it is known that no cases of the disease were transmitted on the ground.
The health district regularly tests mosquitoes for West Nile virus, Zika, St Louis encephalitis and Western Equine Encephalitis, all of which can be fatal and were found in Clark County.
Residents can report green swimming pools and standing or standing water sources to local code enforcement agencies. They are also encouraged to report mosquito activity, particularly biting mosquitoes, to the health monitoring mosquito monitoring program at 702-759-1633. For more information, visit the health district website, suddennevadahealthdistrict.org