the staff of the Ridgewood blog
TRENTON, NJ — The New Jersey Department of Health (NJDOH) has confirmed the state’s first human cases of West Nile virus (WNV) this year, including a child in Atlantic County and an adult in Middlesex County. Both developed neuroinvasive disease, a more severe form of the illness, but have since been discharged from the hospital and are recovering at home.
Health officials are also investigating four additional suspected cases and confirmed that a Sussex County resident tested positive during routine blood donation screening, despite showing no symptoms.
Last year, New Jersey recorded 41 human cases of WNV, including eight deaths, making it one of the state’s busiest seasons in recent years. While this year’s case numbers are currently lower, mosquito surveillance shows high levels of the virus circulating, with 776 mosquito pools testing positive statewide, particularly in Bergen, Middlesex, Union, Essex, and Hudson counties.
What Residents Need to Know About West Nile Virus
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Most people infected show no symptoms.
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About 1 in 5 people experience mild illness with fever, chills, headaches, joint pain, vomiting, diarrhea, or rash.
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Fewer than 1% of infections progress to severe, potentially life-threatening neurological disease, including high fever, tremors, disorientation, or paralysis.
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People over age 50 and those with weakened immune systems are at higher risk.
“While the number of human infections is lower than last year, we are seeing high levels of virus circulating in mosquitoes,” said Acting Health Commissioner Jeff Brown. “Mosquito season can last into November, so preventing bites remains critical.”
Tips to Protect Against Mosquito Bites
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Use EPA-registered insect repellents.
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Wear long sleeves and pants when outdoors.
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Treat clothing with permethrin or purchase pre-treated items.
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Cover cribs, strollers, and carriers with mosquito netting.
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Eliminate standing water from flowerpots, birdbaths, gutters, and other containers.
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Use window and door screens or air conditioning to keep mosquitoes out.
Environmental Protection Commissioner Shawn M. LaTourette added:
“Don’t let your guard down—dump standing water and prevent mosquito breeding on your property to reduce the risk of serious mosquito-borne diseases.”
Additional Concerns: Eastern Equine Encephalitis (EEE)
Alongside WNV, mosquitoes in Atlantic County have also tested positive for Eastern Equine Encephalitis (EEE), a rare but severe virus that threatens both humans and horses. Officials urge horse owners to ensure their animals are up to date on vaccinations for WNV and EEE.
Statewide Surveillance and Resources
New Jersey’s fight against mosquito-borne illnesses involves NJDOH, NJDEP, NJDA, the CDC, the State Mosquito Control Commission, and local agencies. Weekly WNV updates and an interactive dashboard are available on the NJDOH website.
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