Deadly Vibrio Bacteria Prompts Public Health Warning in Louisiana’s Calcasieu Parish

 LAKE CHARLES, Louisiana — August 15, 2026 — Health officials are urging residents and visitors in southwest Louisiana to take extra precautions around warm coastal and brackish waters after Calcasieu Parish Coroner Dr. Joseph Dressler issued a public health warning about Vibrio vulnificus, a potentially deadly bacterium.

According to a report by KPLC, Louisiana has recorded nine confirmed Vibrio vulnificus infections this year as of August 5, including five deaths. All nine cases were linked to open wounds that came into contact with seawater or brackish water.

Why Officials Are Concerned

Vibrio vulnificus occurs naturally in warm coastal and brackish waters and is more common during the warmer months. The bacterium can enter the body through cuts, scrapes or other open wounds.

Dr. Dressler said several patients in the Calcasieu and Cameron areas have been affected, with some cases resulting in severe infections, amputations and death.

The infection can progress rapidly. In severe cases, it can lead to bloodstream infections, intensive-care treatment, tissue destruction and limb amputation.Who Faces the Greatest Risk?

Although anyone with an open wound can become infected, officials say the risk of serious illness is higher among people with certain underlying conditions.

Higher-risk groups include:

People with chronic liver or kidney disease

People with diabetes

People with weakened immune systems

People receiving immunosuppressive treatment

People with cancer

Older adults

How to Protect Yourself

Health officials recommend keeping cuts and open wounds away from saltwater, brackish water and coastal floodwater. If exposure is unavoidable, wounds should be covered with waterproof bandages.

Anyone who gets exposed should wash the affected area immediately with soap and clean running water.

People should also watch for warning signs such as redness, swelling, warmth, severe pain, discoloration, discharge or fever. Anyone developing these symptoms after coastal-water exposure should seek medical attention immediately and tell the doctor about the water exposure.

What About Seafood?

Vibrio vulnificus can also cause illness when people consume raw or undercooked shellfish, particularly oysters. Health officials recommend thoroughly cooking shellfish and using gloves when handling raw seafood.

However, the nine Louisiana cases reported this year were linked to water exposure rather than food consumption, according to the Calcasieu Parish warning reported by KPLC.

Officials Urge Residents Not to Ignore Symptoms

The key message from local officials is simple: people should not underestimate a wound exposed to warm coastal or brackish water.

Because Vibrio vulnificus infections can become life-threatening quickly, early medical evaluation is critical when concerning symptoms appear.

Bottom line: Residents and visitors enjoying Louisiana’s coastal waters should protect open wounds, practice careful seafood handling and seek urgent medical care if signs of infection develop.

Source: KPLC, Calcasieu Parish Coroner public health warning.