West Nile Virus Detected in Allegheny County Mosquitoes; Targeted Spraying Planned
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Allegheny County, PA – Teh Allegheny County Health Department has confirmed the presence of West Nile Virus in additional mosquito samples, prompting targeted pesticide request in several communities. The announcement serves as a reminder of ongoing efforts to manage mosquito-borne diseases in the region.
Health Department Action
In response to the positive test results, the health department will be treating areas within Hazelwood, South Side slopes, Arlington, Mount Oliver, Carrick, Knoxville, and Beltzhoover. The pesticide Zenivex E20, classified by the EPA as a low-risk insecticide safe for humans and pets, will be used in these efforts.
The spraying is scheduled for Thursday, July 24, between 8 p.m. and 11 p.m. residents are advised that if weather conditions are unfavorable, the spraying will be postponed to monday, July 28, during the same hours.
Understanding West nile Virus
West Nile Virus is the most prevalent mosquito-borne illness in the United States. It is indeed transmitted to humans through the bite of an infected mosquito. The virus typically circulates during the warmer months, with mosquito season extending from spring through fall.
While most individuals infected with West Nile Virus do not exhibit symptoms,approximately one in five may develop signs such as fever,headache,body aches,joint pain,vomiting,diarrhea,or a rash. Currently,there are no vaccines available for prevention or specific medications for treatment.
The last reported human case of West Nile Virus in Allegheny County was in September 2024.
Preventative Measures and Community Role
Nicholas Baldauf, Allegheny County Health Department Vector Control Specialist, emphasized the importance of personal protection. “generally,the species of mosquitoes that carry West Nile Virus are active from dusk to dawn,” Baldauf stated. “To deter mosquito bites,we encourage people to use insect repellent on exposed skin or to wear long sleeves and pants. Both methods are effective at reducing or eliminating the possibility of getting a mosquito bite.”
Baldauf also highlighted the crucial role residents play in controlling mosquito populations. “Allegheny County residents play an important role when it comes to reducing the area’s mosquito population,” he said. “Mosquitoes can breed in as little as a half-inch of stagnant water, so residents should pay close attention to potential breeding sites like stagnant water in tires, unused swimming pools, buckets, corrugated piping, and clogged gutters.”
Individuals who suspect they or someone they know may have contracted West Nile Virus are urged to consult a healthcare professional for an accurate evaluation and diagnosis.
