Florida has reported 15 cases of Vibrio vulnificus in 2026, including two deaths, according to the state's Department of Health. The cases have renewed attention on the risks of this so-called "flesh-eating" bacterium, which thrives in warm coastal waters .
Genevieve Gallagher, a Pensacola woman, contracted the infection in July 2025 after entering the water with a cut on her leg during a family boat trip. She developed sepsis, was intubated for six days, and lost a significant portion of her left leg below the knee. "I woke up and a large part of my lower leg was no longer there," she said .
Vibrio vulnificus naturally lives in warm coastal waters and can enter the body through open wounds or consumption of raw or undercooked shellfish, especially oysters . The CDC notes that infections can cause necrotizing fasciitis, a severe tissue-destroying condition .
Climate change is expanding the bacterium's range. Warming ocean temperatures have allowed it to appear along the East Coast as far north as New York and Connecticut. A study found that wound infections from Vibrio vulnificus increased eightfold between 1988 and 2018 in the eastern U.S. .
Health officials urge caution for swimmers and seafood consumers, especially during warmer months (May–October). Avoiding water entry with open wounds and thoroughly cooking shellfish are key preventive measures .