against cb ( s ) strains the lowest mic values were obtained with ceftazidime ( 1 mg/l ) followed by cefsulodin ( 1-2 mg/l ) , cefoperazone ( 2-4 mg/l ) , ceftriaxone ( 4 mg/l ) , moxalactam ( 4-8 mg/l ) and cefotaxime ( 8-16 mg/l ) .
C0007561
ceftriaxone
C0007554
cefotaxime