photos courtesy of County Executive Jim Tedesco
the staff of the Ridgewood blog
Ridgewood NJ – With multiple mosquito pools testing positive for West Nile virus, Bergen County is stepping up its fight against the pests — and officials say residents play a crucial role in the battle.
As part of the “Bergen Bites Back” initiative, the county is focusing on surveillance, larval control, and public education to reduce the risk of mosquito-borne illnesses. While no human or animal cases have been reported in New Jersey this year, experts warn that 2025 is seeing abnormally high mosquito activity — similar to last year’s spike.
“Hot temperatures and low precipitation can sometimes lead to higher virus levels, but there are many environmental factors at play,” said Matthew Bickerton, entomologist with the Bergen County Department of Health.
From July 21 to July 27, officials detected 18 positive mosquito pools in Bergen County. In 2024, the same period saw 21 positive cases, according to the New Jersey Department of Health.
Natural & Strategic Mosquito Control Efforts
At the Bergen County Mosquito Control Operation in Paramus, one innovative method is breeding Fathead minnows — small fish that eat mosquito larvae and pupae. On August 8, more minnows were added to the fish pond to strengthen biological control efforts.
County Executive Jim Tedesco praised the multi-pronged approach:
“Whether it’s on foot, in the air, or by water, our mosquito control team is working tirelessly to protect residents. But we need the public’s help — dumping standing water and using CDC-approved repellents can make a huge difference.”
Bergen County has already sprayed 21 towns this summer, with more scheduled treatments ahead. Year-round, inspectors treat mosquito habitats, respond to resident service requests, and manage aerial larviciding operations.
How Residents Can Help Stop Mosquito Breeding
Standing water is mosquito breeding ground — and “enemy number one” in prevention. To help reduce the mosquito population, Bergen County urges residents to:
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Clear gutters and downspouts to prevent water buildup.
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Check under decks and porches for stagnant water.
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Ensure planters have drainage holes to avoid pooling.
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Store watering cans and wheelbarrows upside down or indoors after use.
Health educators are also focusing outreach on senior centers, since older adults face a higher risk of severe illness from West Nile virus.
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so is it , climate change, tariffs or just Trumps fault ?