Abstract

Isolates of Neisseria gonorrhoeae from 256 patients contracting acute gonococcal urethritis, primarily in the Republic of the Phillipine Islands, in 1971, were tested for the minimum inhibitory concentrations of five antibodies. The median is advocated as a measurement for comparison of ranges of MIC values; the median MIC of penicillin for 258 isolates was 0-23 mug/ml. A positive correlation coefficient was observed for the susceptibility of isolates to penicillin, spectinomycin, cephaloridine, and tetracycline.