| distribution and sequence analysis of virulence associated genes in vibrio cholerae o1, o139 and non-o1/non-o139 isolates from thailand. | virulence-associated genes of vibrio cholerae including o1, o139 and non-o1/non-o139 from an outbreak in songkhla province and sporadic cases occurred in thailand during 1993 - 2002 were investigated. one hundred eighty-five v. cholerae strains were examined for the presence of virulence-associated genes including ctxa, tcpa, zot, toxr, toxs, toxt, and ace by polymerase chain reaction. dna sequences of ctxa, tcpa, zot and toxr also were investigated in 8 selected isolates. results showed that th ... | 2009 | 19842384 |