Louisiana has recorded five deaths among nine residents infected with the flesh-eating bacteria Vibrio vulnificus in 2026, a significant increase compared to previous years. The Louisiana Department of Health noted that over the preceding decade, the state typically saw an average of seven cases and one death annually from the bacteria.
"Some species, including Vibrio vulnificus, can cause severe and life-threatening infections," the department stated. "About one in five people with Vibrio vulnificus infection dies, sometimes within a day or two of becoming ill." Severe cases may necessitate intensive care or limb amputation.
Vibrio vulnificus is naturally found in warm coastal waters and is most prevalent from May to October when water temperatures rise. Infections can occur when open wounds are exposed to brackish or salt water, or through the consumption of undercooked seafood, particularly oysters.
General Vibrio bacterial infections can manifest as gastrointestinal distress, wound infections, or blood poisoning. Individuals with underlying health conditions, such as HIV, cancer, or thalassemia, are at a higher risk of developing severe or fatal infections.