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Health officials across the Gulf Coast are warning residents and visitors about a noticeable increase in cases of Vibrio vulnificus, a rare but potentially deadly flesh-eating bacterium, as warm summer temperatures peak in 2025. Both Louisiana and Florida have reported higher-than-average numbers of infections and fatalities compared to previous years, prompting urgent public health advisories.
Sharp Increase in Cases and Fatalities
So far in 2025, Louisiana has confirmed 17 cases of Vibrio vulnificus infection, resulting in four deaths—all patients required hospitalization. In comparison, the state typically logs about seven cases and one death a year over the same stretch. Florida has also reported 13 cases and four deaths, while additional cases have been identified in Alabama and Mississippi. In total, at least eight deaths have been attributed to Vibrio vulnificus infections along the Gulf Coast this year.
What Is Vibrio vulnificus?
Vibrio vulnificus is a bacterium naturally found in warm, salty, or brackish water, especially between May and October. It can infect humans in two main ways:
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Through open wounds exposed to contaminated water, often leading to severe wound infections sometimes described as “flesh-eating.”
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By consuming raw or undercooked seafood, particularly oysters, which can cause gastrointestinal illness or, in severe cases, bloodstream infection.
Some individuals with the infection may require intensive care or even limb amputation. The Centers for Disease Control and Prevention (CDC) estimates that about one in five people with severe infection die, sometimes within a day or two of symptoms appearing.
Who Is Most at Risk?
While anyone can contract Vibrio vulnificus, the risk of severe illness is highest for those with:
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Chronic liver disease
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Cancer or diabetes
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Weakened immune systems
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Recent stomach surgery or medication lowering stomach acid.
Symptoms to Watch For
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Gastrointestinal infection: Watery diarrhea, stomach cramps, nausea, vomiting, fever, and chills
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Wound infection: Fever, redness, pain, swelling, warmth, skin discoloration, discharge
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Bloodstream infection: Fever, chills, dangerously low blood pressure, blistering skin lesions
Prevention Tips
Health experts recommend several precautions, especially for vulnerable groups:
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Stay out of brackish or salt water if you have open wounds; if exposure is likely, cover wounds with waterproof bandages.
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Thoroughly wash wounds with soap and water if they come in contact with coastal waters, raw seafood, or their juices.
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Use caution when eating raw or undercooked seafood.
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Wash hands after handling raw shellfish and avoid cross-contamination with cooked seafood.
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Wear protective gloves and clothing if handling raw seafood or entering warm coastal waters.
Expert Advice
Dr. Alok Patel, a pediatrician with Stanford Children’s Health, urges quick medical attention for anyone who develops infection symptoms after exposure to warm coastal waters or raw seafood: “This needs to be treated quickly,” he emphasized.
Disclaimer:
This article is for informational purposes only and is based on the latest updates from health officials and news reports as of August 2025. It is not a substitute for professional medical advice or care. If you have symptoms or think you may have been exposed to Vibrio vulnificus, contact a healthcare provider promptly. The situation is evolving, and readers should monitor local and national health advisories for the most current information.
