Neisseria gonorrhoeae were collected from men attending out-patient cl
inics in Dubai. The susceptibility to a range of therapeutic antibioti
cs and their auxotype and serotype was determined. The plasmid content
of all penicillinase-producing strains was also analysed. Thirty-six
strains of N. gonorrhoeae were isolated from specimens collected from
79 patients over a 24-day period. Of the 36 isolates, 9 (25 %) were pe
nicillinase-producing N. gonorrhoeae (PPNG) and 15 (42 %) were chromos
omally resistant N. gonorrhoeae (CMRNG). CMRNG exhibited higher levels
of resistance to cefuroxime, chloramphenicol, tetracycline and erythr
omycin than PPNG. All isolates were susceptible to ceftriaxone and spe
ctinomycin. Three (8 %) isolates showed reduced susceptibility (MIG, g
reater than or equal to 0.25 mg/1) to ciprofloxacin. Six isolates of P
PNG carried the 4.4 MD and three the 3.2 MD penicillinase encoding pla
smid. The total gonococcal population was phenotypically diverse, with
12 serovars, 6 auxotypes and 21 A/S classes. Gonorrhoea was found to
be a major cause of urethritis in Dubai and the strains exhibited high
levels of resistance to penicillin.