Antimicrobial susceptibility of Edwardsiella tarda from the United States and Taiwan.

Edwardsiella tarda isolates from the United States and Taiwan were screened against 37 antimicrobial agents. These isolates were highly susceptible to the amino-glycosides, second and third generation cephalosporins, newer penicillins, nitrofurantoin, sulfamethoxazole/trimethoprim, and the quinolones. Source-related resistance was found for penicillin G, sulfadiazine, colistin, novobiocin, spectinomycin, ampicillin, tetracycline, and chloramphenicol. Generally, the Taiwan isolates were more resistant than the United States isolates.