Minimal inhibitory concentrations of 19 antimicrobial agents for 96 clinical isolates of group IVe bacteria

Susceptibility testing of 96 clinical group IVe isolates to 19 antimicrobial agents by agar dilution revealed that, at drug levels achievable in serum, the isolates were susceptible only to aminoglycosides, cephalosporins, and colistin, whereas at drug concentrations attainable in urine, they were susceptible to erythromycin, tetracycline, and nitrofurantoin as well.