Antibacterial Activity of Cefamandole, a New Cephalosporin Antibiotic, Compared with that of Cephaloridine, Cephalothin, and Cephalexin

AUTOR(ES)

Eykyn, Susannah

RESUMO

The in vitro antibacterial activity of cefamandole, a new cephalosporin antibiotic, was compared with that of cephaloridine, cephalothin, and cephalexin against 1,213 strains of gram-positive and gram-negative bacteria recently isolated from clinical sources. The decreasing order of activity of the four agents against gram-positive cocci was cephaloridine, cephalothin, cefamandole, and cephalexin. However, cefamandole was the most active of the four against Haemophilus species and gram-negative bacilli susceptible to cephalosporins. It was also active against many strains resistant to the other cephalosporins, such as Enterobacter species and indole-positive Proteus species, but there was a marked inoculum effect with all of these organisms, and minimal bactericidal concentrations were usually considerably higher than minimal inhibitory concentrations. Cefamandole, like other cephalosporins, had no useful activity against Pseudomonas species.

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