Characteristics Of Non-Cholera Vibrios Isolated From Patients With Diarrhoea

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Abstract
Forty-seven non-cholera vibrios (NCV) isolated from patients admitted to a Calcutta hospital with acute diarrhoea were investigated. Most of the strains belonged to Heiberg groups (HG) I, II and VII. A detailed biochemical study proved that organisms allocated to HG I and II are related to each other in sharing many biochemical activities, whereas NCV of HG VII are biochemically inactive. The HG-VII strains were characterised by their instability in saline or acriflavine or in both, lack of pellicle formation, and resistance to 25 γ of ampicillin; they gave negative reactions in lactose fermentation tests and in the ONPG, Simmons' citrate, K-P organic acid fermentation, V-P, and haemolysin tests.

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