Table 1.

V. cholerae strains of the O1, O139, and non-O1, non-O139 serogroups included in this study

StrainPlace of isolationSourceYear of isolation
V. cholerae O1 biotype E1 Tor strains
 VO1Orissa, IndiaDiarrheal patient1969
 VO2Varanasi, IndiaDiarrheal patient1976
 VO13Varanasi, IndiaDiarrheal patient1989
 VO3Varanasi, IndiaDiarrheal patient1990
 VO4Varanasi, IndiaRiver water1986
 VO5Varanasi, IndiaRiver water1988
 VO7Varanasi, IndiaRiver water1988
V. cholerae O139 strains
 MO45aMadras, IndiaDiarrheal patient1992
 CO594Calcutta, IndiaDiarrheal patient1992
 CO766Calcutta, IndiaDiarrheal patient1992
 CO788Calcutta, IndiaDiarrheal patient1992
 VO12Varanasi, IndiaDiarrheal patient1994
 VO14Varanasi, IndiaDiarrheal patient1993
 VO15Varanasi, IndiaDiarrheal patient1993
 VO16Varanasi, IndiaDiarrheal patient1994
 VO17Varanasi, IndiaEichhornia crassipes1992
 VO18Varanasi, IndiaEichhornia crassipes1992
 VO19Varanasi, IndiaRiver water1992
 VO20Varanasi, IndiaHand pump1992
V. cholerae non-O1, non-O139 strains
 VO22Varanasi, IndiaDiarrheal patient1979
 VO23Varanasi, IndiaDiarrheal patient1979
 VO24Varanasi, IndiaRiver water1986
 VO25Varanasi, IndiaRiver water1988
 VO26Varanasi, IndiaRiver water1988
 VO27Varanasi, IndiaRiver water1986
 VO28Varanasi, IndiaRiver water1986
  • a V. cholerae O139 reference strain MO45 (= ATCC 51394).