Antimicrobial drug sensitivity results from Sensititer plate testing were available for amoxicillin/ clavulanate, ampicillin, azithromycin, chloramphenicol, ciprofloxacin, nalidixic acid, streptomycin, sulfisoxazole
, tetracycline, and trimethoprim/sulfamethoxazole.
0 mg/L), and resistance to furazolidone, nalidixic acid, sulfisoxazole
, streptomycin, and trimethoprim/ sulfamethoxazole.
Susceptibility results for antimicrobial drug tested showed that all isolates were resistant to trimethoprim/sulfamethoxazole, furazolidone, nalidixic acid, sulfisoxazole
, and streptomycin, and 18 isolates showed intermediate resistance to chloramphenicol, ampicillin, or amoxicillin/clavulanic acid.
double dagger]) Sulfamethoxazole was used during 1999-2003 and sulfisoxazole
since 2004 to represent sulfonamides.
The retail meat isolate from this group was susceptible to all antimicrobial agents tested, while 1 of the 2 isolates from human infections was resistant to cephalothin and the second was resistant to ampicillin, streptomycin, sulfisoxazole
, and tetracycline.
The isolate was susceptible to amikacin 30 [micro]g/mL, ceftazidime 30 [micro]g/mL, ceftriaxone 30 [micro]g/mL, meropenem 10 [micro]g/mL, sulfisoxazole
25 Kanamycin >64 [less than or equal to] 8 Nalidixic acid 4 1 Piperacillin-tazobactam >64 2 Streptomycin [less than or >64 equal to] 32 Sulfisoxazole
>256 [less than or equal to] 16 Tetracycline >32 [less than or equal to] 4 Trimethoprim-sulfamethoxazole >4 [less than or equal to] 0.
All isolates were tested for susceptibility to ampicillin, chloramphenicol, ceftriaxone, ciprofloxacin, gentamicin, kanamycin, nalidixic acid, streptomycin, sulfisoxazole
, trimethoprim-sulfamethoxazole, and tetracycline by disk diffusion according to standard guidelines (11).
All isolates were tested for susceptibility to ampicillin, amoxicillin-clavulanic acid, cefoxitin, ceftriaxone, cephalothin, chloramphenicol, ciprofloxacin, gentamicin, kanamycin, nalidixic acid, streptomycin, sulfisoxazole
, tetracycline, and trimethoprim-sulfamethoxazole, by using the Kirby-Bauer disk diffusion method.