RT Journal Article SR Electronic T1 Penicillinase-producing Neisseria gonorrhoeae among prostitutes in Surabaya. JF The British Journal of Venereal Diseases JO Br J Vener Dis FD BMJ Publishing Group Ltd SP 98 OP 99 DO 10.1136/sti.59.2.98 VO 59 IS 2 A1 Sastrowidjojo, H A1 Idajadi, A YR 1983 UL http://sti.bmj.com/content/59/2/98.abstract AB Thirty-six strains of penicillinase-producing Neisseria gonorrhoeae (PPNG) were detected among 794 prostitutes between October 1981 and May 1982 in Surabaya, Indonesia. The high prevalence of PPNG strains among the high-class prostitutes and a lower prevalence among the low-class suggest that regular mass treatment for syphilis did not play an important role in the emergence and spread of PPNG; the importation of PPNG strains from abroad is more likely to have been responsible.