RT Journal Article SR Electronic T1 Penicillinase-producing Neisseria gonorrhoeae isolated in Surabaya. JF The British Journal of Venereal Diseases JO Br J Vener Dis FD BMJ Publishing Group Ltd SP 376 OP 377 DO 10.1136/sti.57.6.376 VO 57 IS 6 A1 A Soendjojo A1 A Idajadi A1 Y Barakbah A1 M I Ilias YR 1981 UL http://sti.bmj.com/content/57/6/376.abstract AB Although penicillinase-producing strains of Neisseria gonorrhoeae (PPNG) were discovered in 1976 in neighbouring countries, not until 1980 were such strains isolated and identified in Indonesia. In that year PPNG were detected in three male patients with gonococcal urethritis in Surabaya. The minimum inhibitory concentration of penicillin G for all three strains was 12 . 5 microgram/ml.