Flesh-eating Vibrio infections claim five lives in Louisiana this year

State health authorities in Louisiana disclosed that Vibrio vulnificus, a bacterium thriving in warm coastal waters, has resulted in nine infections during 2026, with five victims dying. Every patient contracted the infection through wounds that came into contact with seawater and all had preexisting health issues such as liver disease or immune suppression. Historically the state averages seven cases and one death annually, but 2025 experienced a spike to 26 cases and five fatalities, indicating a growing threat.

Florida’s health department has similarly reported two deaths this year, after a pattern of increased cases following severe storms like Hurricane Helene. Scientists attribute the broader spread to climate-driven warming of ocean temperatures, which has even led to detections in New York’s Long Island waters. Public health guidance urges people to avoid salt-brackish water, clean wounds promptly, and thoroughly cook seafood to reduce risk.