Overview
- State health agencies reported early-season infections in early June, with Florida confirming five Vibrio vulnificus cases across five counties including Miami‑Dade and Alabama reporting six vibriosis cases so far in 2026.
- Vibrio bacteria live in warm coastal and brackish waters and most infections follow open wounds exposed to seawater or the consumption of raw or undercooked shellfish, especially oysters.
- People with liver disease, cancer, diabetes, HIV, thalassemia, recent stomach surgery, low stomach acid or immune suppression face much higher risk of severe Vibrio vulnificus complications.
- If diagnosed early, infections can respond to antibiotics, but advanced cases may require surgical debridement, drainage of blisters or even amputation, so clinicians are urged to watch for rapid symptoms and begin prompt treatment.
- The CDC estimates about 100 to 200 Vibrio vulnificus cases are reported nationally each year and health officials warn that warmer summer waters could drive a predictable seasonal rise in infections while existing surveillance may miss some late-developing severe outcomes.