INTU and vibrio infectious disease: PCR test results showed that 95.5% of the 2007–2010 cholera epidemic isolates contained the SXT element integrase (int), among which genes for resistance to trimethoprim (dfrA1; 83.1%), sulfamethoxazole (sul2; 77.1%), streptomycin (strA [91.6%] and strB [80.7%]), and chloramphenicol (floR; 91.6%) were present, while none of the 2015–2016 epidemic isolates harbored a resistance genes other than the dfrA1 gene (75.8%).