The New York State Department of Health (DOH) on July 15 reminded New Yorkers to take precautions against mosquito-borne illnesses after confirming West Nile virus (WNV) in mosquito pools in Nassau, Rockland and Suffolk counties. The DOH publishes weekly mosquito-borne disease surveillance reports and is coordinating surveillance and outreach with local health departments across the state.
State Health Commissioner Dr. James McDonald is quoted in the release saying prevention is the best defense: “Mosquitoes are not our friends. Preventing mosquito bites stops the nuisance itching and can prevent rare and potentially serious illnesses.” The DOH highlighted steps individuals and communities can take to reduce bite risk and slow the spread of infections.
Who is at risk and how the state is monitoring
Most people infected with West Nile virus do not develop symptoms. When illness occurs, symptoms typically appear within 2–14 days after a bite from an infected mosquito and can range from mild fever and aches to, rarely, serious neurologic illness. The release also describes Eastern equine encephalitis (EEE), a much rarer but more severe infection that disproportionately affects people younger than 15 and older adults.
The DOH coordinates statewide mosquito surveillance with county health departments, collects mosquitoes from traps in key habitats, and tests samples at the Wadsworth Laboratory. Weekly surveillance reports and lab-testing guidance are posted on the DOH website.
Prevention tips from the DOH
- Cover exposed skin when mosquitoes are active—wear long sleeves, long pants and socks.
- Use EPA‑registered insect repellent on exposed skin and follow label directions.
- Wear permethrin‑treated clothing and gear when appropriate.
- Reduce standing water around yards; remove discarded tires and containers that collect water.
- Make sure windows and doors have intact screens; maintain and clean pools and drains.
- Use larvicides (e.g., mosquito dunks) only according to label directions where water cannot be removed.
The DOH release also notes outreach plans for veterinary practitioners, guidance for protecting horses (vaccines are available for EEE and WNV), and that educational materials will be provided at the Great New York State Fair (Aug. 26–Sept. 7).
For the DOH’s weekly mosquito-borne disease activity reports and additional guidance see the Department’s website.
