Louisiana Vibrio vulnificus outbreak: 5 deaths reported as deadly bacteria cases rise, prompting new warnings for beachgoers. Check symptoms, when to seek medical care, and how should you protect yourself

The Louisiana Vibrio vulnificus outbreak has resulted in nine reported cases and five deaths so far in 2026, according to state health officials. All nine cases were linked to wounds exposed to seawater, and officials said the patients had underlying health conditions. Vibrio vulnificus naturally occurs in warm coastal waters and can cause severe, potentially life-threatening infections.