NEW YORK CITY (PIX11) — Concerns over West Nile are increasing, as the virus has now been detected in mosquitoes tested in every borough of New York City.

The illness transmitted by mosquitoes can infect humans, birds, horses, and other mammals. However, many infected individuals experience only mild to moderate symptoms or none at all.

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West Nile virus can be more severe for individuals aged 60 and older, or for those with weakened immune systems. Symptoms include fever, headaches, tiredness/weakness, body aches and joint pain, vomiting, diarrhea, and rash.

The New York City Department of Health monitors mosquito pools citywide to track West Nile virus cases.

As of July 29, 360 pools tested positive for the virus. Staten Island and Queens had the most pools of positive mosquitoes, with 165 and 144, respectively.

42 positive pools were reported in Brooklyn, 8 in the Bronx, and 1 in Manhattan.

To combat West Nile and to reduce mosquito populations, the city conducts spraying in non-residential areas, including marshes and wetland areas. The treatment uses EPA-approved products that have minimal impact on people, pets, and wildlife.

To stay updated on where spraying will be conducted, click here.

So far this year, there have been no human cases of West Nile virus infection in New York, according to the Department of Health.

Ben Mitchell is a digital content producer from Vermont who has covered both local and international news since 2021. He joined PIX11 in 2024. See more of his work here.

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