BATON ROUGE, La. — State health officials are urging heightened caution following a sharp rise in severe infections caused by Vibrio vulnificus, a rare flesh-eating bacterium naturally found in warm coastal waters.
According to the Louisiana Department of Health (LDH), five people in the state have died from the bacteria so far in 2026, alongside four additional hospitalizations. This marks a significant increase compared to the 10-year historical average for the same period, which typically sees seven total cases and one death statewide.
Key Details of 2026 Cases
Transmission: Every reported case this year involved an open wound exposed directly to seawater.
Underlying Risk Factors: All individuals who contracted the severe infection had pre-existing health conditions.
Mortality Rate: Health officials note that approximately 1 in 5 people with a Vibrio vulnificus infection die, occasionally within 24 to 48 hours of symptom onset.
Understanding the Bacteria
Vibrio bacteria thrive in warm brackish and salt waters, peaking in concentration between May and October as water temperatures rise.
Infection typically occurs through two primary routes:
Wound Exposure: Salt or brackish water coming into contact with cuts, scrapes, new piercings, or surgical sites.
Consumption: Ingesting raw or undercooked seafood—most notably oysters.
Illnesses range from mild gastrointestinal distress to severe wound and bloodstream infections requiring intensive care or amputation.
High-Risk Populations
Individuals face a substantially higher risk of severe complications or death if they have:
Chronic liver disease or conditions affecting the stomach
Cancer, HIV, or thalassemia
Diabetes
Immune-suppressing treatments or medications that lower stomach acid
Recommended Safety Precautions
LDH advises residents and visitors to follow these guidelines to minimize infection risks:
Avoid Water Exposure: Stay out of brackish or salt water if you have open wounds, cuts, scrapes, fresh tattoos, piercings, or recent surgical sites.
Cover and Clean: Securely cover any potential wounds with a waterproof bandage before entering coastal waters or handling raw seafood. Wash exposed skin thoroughly with soap and water immediately afterward.
Safe Seafood Handling: Cook seafood thoroughly, especially for individuals who are pregnant, immunocompromised, or managing liver or stomach conditions.
Prevent Cross-Contamination: Keep cooked seafood strictly separated from raw seafood and its juices. Always wash your hands with soap and water after handling raw shellfish.
Wear Protective Gear: High-risk individuals should wear protective clothing, footwear in coastal waters to prevent scrapes, and gloves when handling raw seafood.
