The New Jersey Department of Environmental Protection, Department of Health, and Department of Agriculture are urging residents to eliminate standing water that can serve as breeding grounds for mosquitoes, as the state experiences a surge in larval pools following recent wet weather. The increase in mosquito populations has led to a rise in nuisance complaints to county mosquito control agencies as the summer peak mosquito season begins.
New Jersey maintains a comprehensive mosquito control program that includes public awareness campaigns, targeted habitat reduction, the use of natural predators such as mosquito-eating fish, and the application of approved insecticides. However, state officials stress that public participation is critical in removing standing water and maintaining seasonal property conditions to reduce mosquito populations and the risk of mosquito-borne illnesses.
Mosquito-borne diseases of concern in New Jersey include West Nile virus (WNV), Eastern Equine Encephalitis (EEE), and Jamestown Canyon Virus (JCV). In 2024, the state recorded 41 human cases of WNV, with eight fatalities. EEE, though less common, poses a higher risk of severe illness, with two cases reported last year. JCV, while more frequently reported in the upper Midwest, has also been detected in New Jersey.
Most people infected with WNV or EEE do not develop symptoms or experience mild flu-like illness, but some may progress to severe neurological conditions such as encephalitis or meningitis. Similarly, JCV can cause fever and fatigue but may also result in serious brain inflammation. There are currently no vaccines or specific treatments available for these viruses, making prevention efforts essential.
Residents are encouraged to protect themselves by using EPA-registered insect repellents, wearing protective clothing, and taking steps to remove or treat standing water sources around their homes and properties. Recommended measures include emptying water from containers such as flowerpots and birdbaths weekly, clearing clogged gutters, disposing of unused water-holding containers, and maintaining swimming pools and ornamental ponds.
State agencies remind the public that if mosquito problems persist after taking these steps, residents should contact their county mosquito control agency for further assistance.