[Bacteriological studies in vitro on cefsulodin, a new cephalosporin active against Pseudomonas (author's transl)].

In vitro comparison of MIC from cefsulodin, cefataxime, and azlocillin for 265 strains of Pseudomonas aeruginosa demonstrates that of the available beta-lactam antibiotics cefsulodin has the highest anti-pseudomonal activity. In the agar-diffusion test (30 micrograms disc) cefsulodin zone diameters greater than or equal to 12 mm (corresponding to MIC less than or equal to 32 micrograms/ml) are considered as showing susceptibility of the organisms.