Outbreak of gastroenteritis due to a new strain of non O group 1 Vibrio cholerae, in Ludhiana in May-August 1993.

The isolation of the new serotype 0139 of non 01 V. cholerae from an outbreak of gastroenteritis is reported. The study of 35 such isolates revealed their similarity with the El tor vibrios biochemically and by other characters. All were strongly haemolytic and 97.1 per cent of the strains showed a positive haemagglutination.