title: Ecological study of pathogenic vibrios in aquatic environments.
abstract: An ecological study of pathogenic vibrios in aquatic environments of Okayama was carried out. The number of Vibrio parahaemolyticus detected in the sea area was comparatively smaler than that found in the survey of about two decades ago. Various reasons for the decrease in the case of food poisoning by V. parahaemolyticus have been suggested but the lower number of the vibrio in aquatic environments may be one explanation. Although the number of V. vulnificus was also not as large, most of the isolates possessed the pathogenic genes, vvp and vvh, suggesting the potential for fatal pathogenicity to patients having underlying diseases. As for V. cholerae, some non-O1/non-O139 serovar isolates were detected in a fresh water area, and many of them had hlyA, the gene for hemolysin which acts as a pathogenic factor in sporadic cases of diarrhea. Thus, the total number of pathogenic vibrios detected was not of concern. However, the marine products of these areas are shipped in wide area and are for general consumption. Therefore, it is necessary to continue to survey pathogenic vibrios in aquatic environments in order to ensure food hygiene.
authors.affiliation: Okayama University of Science, Okayama, Japan. sumio_shinoda@hotmail.com
authors.forename: Sumio
authors.initials: S
authors.lastname: Shinoda
authors.forename: Yuki
authors.initials: Y
authors.lastname: Furumai
authors.forename: Sei-Ichi
authors.initials: S
authors.lastname: Katayama
authors.forename: Tamaki
authors.initials: T
authors.lastname: Mizuno
authors.forename: Shin-Ichi
authors.initials: S
authors.lastname: Miyoshi
mesh_terms: D004777:Environment; D005517:Foodborne Diseases / Q000453:epidemiology; D005618:Fresh Water / Q000382:microbiology; D005798:Genes, Bacterial; D006801:Humans; D007564:Japan; D012621:Seasons; D012623:Seawater / Q000382:microbiology; D014733:Vibrio / Q000235:genetics / Q000302:isolation & purification / Q000472:pathogenicity*; D014774:Virulence / Q000235:genetics; D014871:Water Microbiology