[Discovery of ten strains of non-O1 Vibrio cholerae pigmentogens].
OBJECTIVE
To study the distribution of non-O1 Vibrio cholerae pigmentogens in water and its biological characteristics and pathogenicity.


METHODS
Samples were collected from local source of drinking water and cultured for pathogenic V. cholerae. Non-O1 V. cholerae was isolated and identified with nutrient agar slant instead of KIA.


RESULTS
Ten strains of V. cholerae producing pigment with negative Gram's stain were detected in the source water in Lu' an Prefecture, Anhui Province during 1994 to 1997, which could all met the definition of non-O1 V. cholerae in morphology, cultural characteristics, biochemistry and serology, with systematic identification. Animal experiments showed that it had strong virulence.


CONCLUSIONS
These strains of V. cholerae cultured in basic cholate agar, nutrient agar slant and blood agar could produce brown pigment, so it was called non-O1 V. cholerae pigmentogens.
D000818:Animals; D003967:Diarrhea / Q000382:microbiology; D051379:Mice; D009626:Terminology as Topic; D014734:Vibrio cholerae / Q000145:classification / Q000302:isolation & purification*; D014871:Water Microbiology; D014881:Water Supply