% of Isolates Susceptible
Trimethoprim-sulfamethoxazole
Tobramycin
Meropenem
Imipenem
Gentamicin
Ciprofloxacin
Cefotaxime
Cefazolin
Amoxicillin-Clavulanate
Nitrofurantoin
Tested on urine isolates only, should only be used for the treatment of simple cystitis
Ampicillin
Note that unlike C. freundii, C. koseri does not have an AmpC beta-lactamase gene
Citrobacter koseri
