RT Journal Article SR Electronic T1 Incidence of penicillinase producing Neisseria gonorrhoeae (PPNG) strains and susceptibility of gonococcal isolates to antibiotics in Benin City, Nigeria. JF Genitourinary Medicine JO Genitourin Med FD BMJ Publishing Group Ltd SP 367 OP 370 DO 10.1136/sti.61.6.367 VO 61 IS 6 A1 E E Obaseiki-Ebor A1 S M Oyaide A1 E E Okpere YR 1985 UL http://sti.bmj.com/content/61/6/367.abstract AB Of 53 strains of Neisseria gonorrhoeae isolated in Benin City, Nigeria, in February 1983 to October 1984, 46 (87%) produced penicillinase. The minimum inhibitory concentrations (MICs) of penicillin G and ampicillin for these isolates were between 1 mg/l and and 50 mg/l. About 48% (22/46) of the penicillinase producing strains were also resistant to streptomycin, cotrimoxazole, and ampicillin and cloxacillin. All 53 isolates were sensitive to tetracycline, erythromycin, amoxycillin and clavulanic acid, nalidixic acid, spectinomycin, and the penicillinase stable cephalosporins. The high incidence of resistance may have been the result of indiscriminate and unsupervised use of antibiotics before patients presented for proper treatment in clinics and hospitals.