Health officials in Suffolk County, New York, have confirmed that more than a dozen mosquito samples collected across Long Island have tested positive for West Nile virus (WNV).
Where the Virus Was Found
Fourteen mosquito samples collected on July 16 tested positive for WNV in the following locations:
- Nesconset
- Northport
- Dix Hills
- Melville
- Lindenhurst
- West Babylon
- St. James
- Rocky Point
- Holtsville
So far this season, Suffolk County has reported 15 WNV-positive mosquito samples and four testing positive for Jamestown Canyon virus. No human cases of either virus have been reported in Suffolk or New York City at this time.
A Seasonal Reminder
“Mosquito activity is picking up with the warmer weather and with it comes the risk of being exposed to West Nile virus,” said Suffolk County Health Commissioner Dr. Gregson Pigott. While officials urge caution, they emphasize there is no cause for alarm. The public is advised to take simple precautions to reduce exposure to mosquito-borne illness.
West Nile virus has been detected in Suffolk County every year since its local emergence in 1999. In 2024, there were 21 confirmed human cases, compared to five cases in 2023. Neighboring New Jersey reported two deaths from the virus last year.
How West Nile Virus Spreads
West Nile virus is primarily transmitted to humans through the bite of an infected mosquito. It is not spread through direct person-to-person contact.
Symptoms of West Nile Virus
Most individuals infected with WNV experience no symptoms or only mild, flu-like illness. However, in some cases—particularly in individuals over age 50 or with weakened immune systems—the infection can become severe.
Severe symptoms may include:
- High fever
- Headache
- Neck stiffness
- Muscle weakness
- Tremors or convulsions
- Disorientation or stupor
- Vision loss or numbness
- Paralysis or coma
Neurological complications can last for weeks and may become permanent.
How to Protect Yourself
To reduce your risk of mosquito bites and infection, health officials recommend the following prevention strategies:
- Limit outdoor activity between dusk and dawn, when mosquitoes are most active.
- Wear protective clothing, including long-sleeved shirts, long pants, shoes, and socks.
- Use mosquito repellents containing DEET, picaridin, or oil of lemon eucalyptus, following label directions.
- Ensure window and door screens are intact and in good repair to keep mosquitoes out.
- Eliminate standing water, which serves as mosquito breeding grounds. At least once a week, empty or remove:
- Birdbaths
- Flowerpot saucers
- Buckets
- Pet water bowls
- Tires
- Pool covers
- Trash containers and rain barrels
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