Resistance to penicillin and identification of penicillinase-producing Neisseria gonorrhoeae among clinical isolates in Thailand

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Abstract
Penicillin-resistant Neisseria gonorrhoeae from 405 patients were studied by determination of penicillin minimal inhibitory concentrations an penicillinase production. Eighteen percent were identified as penicillin-producing N. gonorrhoeae and the mean minimal inhibitory concentration, for all except penicillin-producing strains, was 0.805 micrograms/ml.