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Flesh-Eating Bacteria Hotspots Found in Long Island Waters as Scientists Issue Urgent Warning
Scientists are warning that New York’s coastal waters are currently facing some of the most severe environmental and public health threats on record. Ahead of the annual "State of the Bays" symposium on Friday, Stony Brook University professor Christopher Gobler revealed that flesh-eating bacteria, once largely confined to the warmer waters of the southern United States, has established a dangerous foothold in Long Island’s ponds and bays.
The bacteria, known as Vibrio vulnificus, can lead to life-threatening infections if it enters the body through an open wound or through the consumption of raw shellfish. Dr. Gobler’s team recently identified several specific "hotspots" where the bacteria is present at high levels, including Sagaponack Pond, Mecox Bay, and Georgica Pond on the South Fork. The risk is particularly high during the peak heat of summer when the bacteria multiply rapidly.
The threat is far from theoretical; in 2023, three individuals died from Vibrio-related infections in the Long Island Sound. Dr. Gobler emphasizes that the infection is extraordinarily aggressive, with a mortality rate of approximately 20 percent within just 48 hours of infection. He advises that elderly individuals, those who are immunocompromised, or anyone with an open wound should exercise extreme caution or stay out of the water entirely during the summer months.
Researchers point to two primary drivers for the rise of these dangerous pathogens: climate change and nitrogen pollution. As coastal waters warm, they become more hospitable to southern-origin bacteria. This warming is compounded by nitrogen runoff from approximately 360,000 aging and leaking cesspools in Suffolk County. This excess nitrogen acts as a fuel, feeding toxic algae blooms that deplete oxygen and further destabilize the marine ecosystem.
Current conditions are already causing economic and environmental damage in 2026. Shellfishing has been banned in the western half of Shinnecock Bay and several creeks in Southold due to blooms of Alexandrium, a plankton that produces saxitoxin. This neurotoxin is estimated to be 1,000 times more lethal than cyanide, creating a perilous situation for both the ecosystem and the local oyster industry.
Despite these warnings, there are significant signs of progress in certain areas. Dr. Gobler noted that the "dead zone" in the western Long Island Sound has shrunk by 90 percent over the last two decades. This success is largely attributed to multi-million dollar upgrades to sewage treatment plants that reduced nitrogen output by 60 percent. Additionally, natural filtration methods like kelp farming and the restoration of oyster and clam beds are helping to pull more nitrogen out of the waterways.
For homeowners, environmental advocates say there is "no time to waste" in addressing the root causes of water degradation. New York State and local counties are currently offering substantial grant money to help residents replace antiquated septic systems with modern, nitrogen-reducing technology. Officials urge citizens to take advantage of these programs to help protect the island’s most vital natural resources and public health.
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By: CNN Newsource
April 23, 2026
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