A Gram‑negative, halophilic organism found in warm coastal waters, Vibrio vulnificus enters the body through open wounds exposed to seawater or by ingestion of contaminated seafood, particularly raw oysters. In susceptible hosts—often those with liver disease, diabetes, or iron overload—the infection can progress to septicemia, necrotizing fasciitis, or life‑threatening shock.
Because the pathogen proliferates rapidly in salt‑rich environments, clinical presentation can evolve within hours. Early signs include erythema, pain, and edema at the exposure site, while systemic manifestations may feature fever, hypotension, and marked leukocytosis. Accurate diagnosis relies on culture, PCR, or rapid antigen testing, which guide antimicrobial selection.