Multi-drug resistance phenotype was seen in 98.5% of total isolates with SXT(r)/TE(r)/TMP(r) resistance pattern.Among the 70 Shigella spp. analyzed in this study, 16 isolates were positive for class I integron (int1(+)) with two types of gene cassette arrays (dfrA17/aadA5 and dfrA7).The class 2 integron was more frequently detected among the isolates (85.71%) with dfrA1/sat1/aadA1 (10%) and dfrA1/sat1 (75.71%) gene cassettes.
The index patient, a diabetic woman with recurrent Escherichia coli bacteriuria on prophylactic trimethoprim/sulfamethoxazole (TMP/SMZ) therapy, was hospitalized with concurrent E. coli urinary tract infection and shigellosis.