All the isolates of Neisseria gonorrhoeae from patients that attended special treatment Clinic, University College Hospital, Ibadan, Nigeria between 15th January 1997 and 15th December 1999 were studied so as to review the present prevalence rate of penicillinase producing Neisseria gonorrhoeae (PPNG) in Ibadan. Of the 214 patients that had gonococcal infections, 161 were male (75.2%) and 53 (24.8%) were female. Ninety-two (57.1%) of the male and 28(52.8%) of the female were aged between 20- 29 years while 19.9% of the male and 15.1 % of the female were in the age of 40 and above. The sex difference is not statistically significant (chi2=2.19, df=3, p=0.53). The present study revealed that PPNG strains have increased dramatically to 98.6 per cent. This has posed a great threat to the usefulness of penicillin and ampicillin as the drugs of choice in gonococcal therapy in Nigeria.
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