Flesh-Eating Bacteria Outbreak Kills 7 Across Gulf Coast as Waters Warm

Vibrio vulnificus cases surge in Louisiana and Florida, with health officials warning beachgoers and seafood consumers as summer waters reach peak temperatures.

A rare and deadly outbreak of Vibrio vulnificus — commonly called flesh-eating bacteria — has killed at least seven people across Gulf Coast states this summer, with Louisiana reporting five deaths and Florida confirming two more in recent days.

The Louisiana Department of Health has issued an urgent warning after confirming five fatalities and nine cases statewide, all of which began with open wounds exposed to warm seawater. Florida health officials confirmed their second death of the year in Marion County, bringing the Gulf Coast toll to seven.

Vibrio vulnificus thrives in warm, brackish coastal waters with temperatures above 68°F (20°C). With Gulf waters now at summer peaks, conditions are ideal for the bacteria to multiply. Infections occur in two ways: through open cuts or wounds exposed to seawater, or by consuming raw or undercooked shellfish — particularly oysters harvested from affected waters.

While infections remain rare — the CDC typically records 150 to 200 cases annually nationwide — the current case count is tracking well above the seasonal average. Health officials attribute the spike to a combination of prolonged heat waves, warmer-than-usual Gulf temperatures, and increased recreational water exposure during peak summer months.

Outbreak News Today reports that all nine Louisiana cases began with wound exposure rather than food consumption, a pattern that suggests beachgoers and fishermen face elevated risk.

NTD News confirmed Florida's second Vibrio death, with health officials urging anyone with open wounds — including fresh tattoos, insect bites, or surgical incisions — to stay out of warm coastal waters entirely.

Early symptoms include redness, swelling, and severe pain at the wound site, progressing rapidly to blistering, tissue death, and sepsis. The infection can become life-threatening within 48 hours. Prompt treatment with intravenous antibiotics and surgical debridement is critical — but even with aggressive care, mortality rates range from 20 to 30 percent, rising above 50 percent when bloodstream infection occurs.

The CDC recommends that people with liver disease, diabetes, or compromised immune systems avoid raw shellfish and take extra precautions around warm seawater.

Sources: Outbreak News Today, NTD News, Florida Department of Health, Louisiana Department of Health