SUMMARY:In this study, we performed a retrospective, quantitative analysis of the epidemiological aspects and risk factors of Vibrio vulnificus infections in Korea from 2001 to 2010. In a total of 588 V. vulnificus infection cases (prevalence rate, 0.12 cases/100,000 persons), 285 were fatal (case-fatality rate [CFR], 48.5z). Males were more significantly infected by V. vulnificus than females (86.1z versus 13.9z; P º 0.01), and a higher incidence of V. vulnificus infections was observed in people aged more than 40 years (95.1z; P º 0.01). Moreover, most V. vulnificus infections occurred in the unemployed (42.0z; P º 0.01). The seasonal patterns of outbreaks revealed that most outbreaks occurred in June (early summer) throughout November (the end of autumn) (99.6z; P º 0.01), and significantly more outbreaks occurred in the southern part (65.3z) of the Korean peninsula compared with those in the northern (29.4z) and central (5.3z) parts (P º 0.01). In addition, the number of V. vulnificus infections was significantly higher in rural and coastal villages (69.9z) than in urban areas (30.1z) (P º 0.01). In conclusion, because of the rapid aggravation and high CFR of V. vulnificus infections, public health education should strongly recommend avoiding raw seafood products and limited exposure to marine water during the summer.Of all foodborne infectious diseases, Vibrio vulnificus infection is one of the most severe because the fatality rate of V. vulnificus septicemia exceeds 50z (1). V. vulnificus is a Gram-negative bacillus that only infects humans and other primates. It is a member of the same family of bacteria that cause cholera. V. vulnificus is normally found in warm seawater and is a part of a group of vibrios classified as a halophile because of their salt requirements (2). V. vulnificus was first isolated in 1976 from a series of blood culture samples submitted to the Centers for Disease Control and Prevention (CDC; Atlanta, Ga., USA) (3). In Korea, the first reported case of V. vulnificus infection was in 1982 (4); however, it was not officially reported. V. vulnificus can cause an infection in those who eat contaminated seafood or have an open wound exposed to seawater. Among healthy people, ingestion of V. vulnificus can cause vomiting, diarrhea, and abdominal pain. In immunocompromised persons, particularly those with chronic liver disease, V. vulnificus can infect the bloodstream, causing a severe and life-threatening illness characterized by fever and chills, decreased blood pressure, and blistering skin lesions (1-6). V. vulnificus is found in marine coastal waters surrounding Korea, and infection with this organism by ingestion of raw shellfish or exposure to marine water can cause necrotizing fasciitis and sepsis, which are characterized by high mortality rates and short latency periods (6,7). In Korea, V. vulnificus infection is classified as a type IV notifiable disease by the Communicable Disease Prevention Act of the Korea Center for Disease Control and Prevention (KCDC) in 2000 (7). Thereafte...