Abstract

As part of the continuing surveillance of resistance among gonococci in the Netherlands the PPNG prevalence was estimated by questionnaire as well as by the study of 535 random isolates from 5 centres in Amsterdam The Hague and Rotterdam. In 1991 18% of all isolates of N.gonorrhoeae were PPNG, as compared to 30% in 1990. The prevalence of tetracycline resistance (TRNG) among PPNG further decreased to 8% (was 12% in 1990 and 40% in 1989) and remained low among non-PPNG (3 a 4%). No signs of increasing resistance to cefalosporines and fluoroquinolones were found. Among PPNG and non-PPNG many auxotypes (serovar classes) were determined ; but only a limited number of mainly non-requiring IB serovars was predominant.