Two people have died from Vibrio vulnificus infections linked to contaminated Louisiana oysters, raising the total death toll to eleven across Louisiana and Florida.
Health officials have confirmed that two individuals died after consuming oysters contaminated with the flesh-eating bacterium Vibrio vulnificus. The cases were traced back to Louisiana-harvested oysters served in restaurants in both Louisiana and Florida. This outbreak has now resulted in a total of six deaths in Louisiana and five in Florida, according to the respective health departments of both states.
The Louisiana Department of Health issued a statement on July 31, urging residents to take precautions against vibriosis, the infection caused by Vibrio vulnificus. This bacterium is part of a broader group of Vibrio bacteria, which are typically found in coastal waters, as noted by the Centers for Disease Control and Prevention (CDC).
Dr. Andrew Handel, a pediatric infectious diseases specialist at Stony Brook Children’s Hospital in New York, explained that Vibrio has the potential to cause severe infections, including invasive soft tissue infections, commonly referred to as “necrotizing fasciitis” or “flesh-eating bacteria,” as well as bloodstream infections.
According to the CDC, most cases of vibriosis occur after individuals consume raw or undercooked shellfish, particularly oysters. In some instances, the bacteria can also enter the body through open wounds while swimming in contaminated waters.
Prior to the recent fatalities, health officials reported 17 cases of Vibrio vulnificus among Louisiana residents in 2025. All patients were hospitalized, and four of those cases resulted in death. Over the last decade, Louisiana has averaged seven reported cases of Vibrio vulnificus annually, with one death each year.
Jennifer Armentor, the molluscan shellfish program administrator at the Louisiana Department of Health, expressed concern about the current outbreak, stating, “It’s just prolific right now,” during a meeting with the Louisiana Oyster Task Force at the New Orleans Lakefront Airport.
Symptoms of vibriosis can vary depending on the type of infection. Dr. Handel previously noted that skin infections can escalate rapidly and become life-threatening. While healthy individuals typically experience mild symptoms, those who are immunocompromised or have chronic liver disease face heightened health risks.
If Vibrio vulnificus enters the bloodstream, it can lead to severe illness characterized by fever, chills, septic shock, and blistering skin lesions, according to Florida Health. Approximately half of these bloodstream infections can be fatal.
Severe cases may result in necrotizing fasciitis, where the tissue surrounding an open wound dies. Health officials diagnose the bacterial infection by testing cultures obtained from stool, wounds, or blood.
For mild infections, the CDC recommends increasing fluid intake to prevent dehydration. Those with severe or prolonged infections should receive antibiotics to improve survival rates. In cases of infected wounds, surgical intervention may be necessary to remove dead tissue.
According to the CDC, about one in five individuals infected with Vibrio vulnificus will die, sometimes within a day or two of the onset of illness. Dr. Handel advises, “To prevent Vibrio food poisoning, avoid eating raw shellfish, especially if you are immunocompromised or have chronic liver disease.”
He added that while Vibrio infections are rare, they should not be a major cause for alarm. “If you do eat shellfish, ensure it has not been sitting out for a long time and comes from a hygienic source,” he cautioned.
As health officials continue to monitor the situation, the public is urged to remain vigilant and informed about the risks associated with consuming raw or undercooked shellfish.
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