Louisiana health officials warned residents to stay out of coastal waters with open wounds after nine Vibrio vulnificus infections killed five people this year, more than five times the state's average annual death toll from the bacteria.
The Louisiana Department of Health issued the advisory Thursday, disclosing that the state has already recorded nine cases of the flesh-eating bacterium in 2026, with five proving fatal. Every one of the nine patients had underlying health conditions, and every infection was linked to wounds exposed to seawater.
Those numbers dwarf the state's recent track record. Over the previous ten years, Louisiana averaged just seven cases and a single death during the same stretch of the calendar, the New York Post reported. This year's case count has already exceeded that average, and the death toll has multiplied fivefold, with the peak danger months still ahead.
Vibrio vulnificus lives naturally in warm coastal and brackish water. The bacteria's numbers climb between May and October as water temperatures rise, making summer and early fall the most dangerous window for exposure.
Infection hits two ways. A person can pick up the bacterium when an open wound, even a small cut or scrape, contacts salt water or brackish water. Or it can enter the body through raw or undercooked seafood, oysters in particular. Once inside, the consequences can escalate fast.
The Louisiana Department of Health did not mince words in its statement:
"Some species, including Vibrio vulnificus, can cause severe and life-threatening infections. People with severe infections may require intensive care or limb amputation."
The agency put the mortality rate in blunt terms: "About one in five people with Vibrio vulnificus infection dies, sometimes within a day or two of becoming ill." That timeline leaves almost no margin for delay.
Dr. Fred Lopez, an infectious diseases specialist at LSU Health Sciences Center, has described what treatment looks like for those who survive. Patients "may require multiple surgeries to remove dead or infected tissue, and sometimes require amputation," Fox News reported in coverage of earlier outbreaks tied to Louisiana-harvested oysters.
This year's spike is not an isolated event. Louisiana recorded 20 cases and four deaths from the bacterium in 2024, more than twice the average case count and four times the typical death toll for that point in the season, AP News reported. In 2025, the state logged 17 cases, again well above the ten-year average of seven.
Fox News coverage of 2025 outbreaks linked the bacteria to contaminated oysters harvested in Louisiana, with deaths reported in both Louisiana and Florida. Jennifer Armentor, the molluscan shellfish program administrator at the Louisiana Department of Health, described the situation plainly at the time:
"It's just prolific right now."
Nationally, Vibrio vulnificus accounts for roughly 200 of the more than 1,000 Vibrio-related illnesses reported each year in the United States. But the bacteria's geographic reach has been expanding. AP News noted that the northernmost reported cases have been shifting roughly 30 miles per year, with infections now documented as far north as Cape Cod, Massachusetts.
Bernie Stewart, a 65-year-old Florida resident who survived a Vibrio vulnificus infection, summed up the experience in five words:
"This ain't nothing to play with."
Stewart's case illustrates how quickly the bacteria can overwhelm a body. Survivors often face weeks of hospitalization, repeated surgeries, and the prospect of losing a limb, outcomes that catch people off guard because most have never heard of Vibrio vulnificus before they or someone close to them contracts it.
Louisiana authorities directed anyone with a wound exposed to brackish or salt water to seek medical care "immediately" if the area becomes red, swollen, painful, warm, or discolored. They stressed that patients should tell their health care provider about any recent water exposure, a detail that can speed diagnosis and treatment when hours matter.
Dr. Andrew Handel, a pediatric infectious diseases specialist, offered a straightforward preventive measure: "To prevent Vibrio food poisoning, avoid eating raw shellfish, especially if you are immunocompromised or have chronic liver disease."
Several basic questions remain unanswered. ABC News reported the nine cases and five deaths but noted that the Louisiana Department of Health has not identified which parishes or coastal areas saw infections. The agency has not specified which underlying health conditions the patients had, nor whether any of the nine cases are still under active treatment.
That lack of geographic detail leaves residents along Louisiana's 397-mile coastline guessing about where the risk is highest. It also makes it harder for local officials, parish health departments, beach managers, fishing guides, to issue targeted warnings.
The state has the data. It should release it. When five people are dead and the most dangerous months of the year are still ahead, the public deserves more than a general advisory and a set of averages.
