Cholera outbreak due to Vibrio cholerae serogroup 0139 in Yavatmal (Maharashtra) in March-July, 1993.

A total of 34 strains of V. cholerae were isolated during March to July, 1993. Of the 34 V. cholerae isolated 26 strains were non 01 and remaining eight were 01 El tor vibrio. Non-01 strains were identified as novel epidemic strains designated as 0139. The shift in the relative and absolute prevalence of V. cholera serotype 01 and non 01 was noted.