Louisiana has reported nine cases of Vibrio vulnificus infection in 2026, including five deaths, with all nine cases linked to wounds exposed to seawater.
Louisiana health officials are warning residents about the risk of Vibrio vulnificus, a potentially life-threatening bacteria that can cause severe infections.
According to the Louisiana Department of Health, nine cases have been reported in the state so far in 2026. All nine patients were hospitalized, and five have died.
The key concern is the connection to seawater. Health officials said all nine cases involved wounds that were exposed to seawater.
Why Seawater Can Be a Risk
Vibrio vulnificus naturally occurs in warm coastal and brackish water. The bacteria can enter the body through cuts, open wounds or damaged skin when a person comes into contact with contaminated water.
Because of this risk, people with open wounds should avoid swimming or wading in warm coastal or brackish waters.
The risk can be particularly important during warmer months, when Vibrio bacteria can multiply more readily in coastal waters.
Raw Seafood Is Another Risk
Seawater exposure is not the only way people can become infected. Vibrio vulnificus can also cause illness when people eat raw or undercooked shellfish, particularly oysters.
People should follow seafood-safety precautions and avoid eating raw or undercooked shellfish.
Why the “Flesh-Eating Bacteria” Label Is Used
News reports often refer to Vibrio vulnificus as a “flesh-eating bacteria” because severe infections can damage skin and soft tissue.
However, flesh-eating bacteria is not the scientific name of the organism. The bacteria involved in these Louisiana cases is Vibrio vulnificus.
Severe infections can lead to serious wound infections or bloodstream infections and can become life-threatening.
What Makes Louisiana’s Cases Notable
The number of deaths is concerning, but another important detail is the exposure pattern.
All nine reported Louisiana cases in 2026 were linked to wounds exposed to seawater.
That connection highlights the importance of protecting open wounds when visiting beaches, coastal waters or other warm brackish-water environments.
People who develop signs of a serious infection after seawater exposure should seek medical attention promptly.
Source: Louisiana Department of Health; ABC News
