TABLE 2.

Occurrence of the various rstR genes examined in this study among V. cholerae O1 and O139 strains

rstR gene(s)Original nomenclature (reference)No. of positive isolates
V. cholerae O1V. cholerae O139
rstR1rstRclass (8)90
rstR2rstRET (8)141a83
rstR3rstRCalc (8)00
rstR4rstREnv (10)00
rstR1 + rstR2Not reported60
rstR2 + rstR4Not reported66
rstR2 + rstR3Combination (8)03
rstR1 + rstR2 + rstR3Not reported01
Noneb72
Total16995
  • a Two strains were negative for the ctxA gene.

  • b None, negative for all of the rstR genes tested.