Antibiotic Resistance Pattern of Neisseria gonorrhoeae in Hospital Kuala Lumpur, Malaysia (2001-2005)

ABSTRACT

Background Gonorrhoea is the third most common sexually transmitted infection (after syphilis and non-gonococcal urethritis) seen in patients attending the Genitourinary Medicine (GUM) Clinic in Hospital Kuala Lumpur (HKL). Its association with poor reproductive health outcomes and the increasing prevalence of antimicrobial resistance has made it a major public health concern. Objective To determine the antibiotic resistance pattern of Neisseria Gonorrhoeae in patients attending the GUM Clinic in HKL and its comparison with other countries. Method A retrospective study of all patients with gonorrhoea (new and recurrent) between 2001-2005. Antimicrobial susceptibility testing by standard disc diffusion method was performed to detect sensitivity to penicillin, tetracycline, kanamycin, ciprofloxacin, spectinomycin, ceftriaxone and cefuroxime. Results A total of 416 positive culture isolates of N.gonorrhoeae from 2001-2005 were reviewed. Highest level of resistance was detected to tetracycline (86.8% of 296 isolates). Resistance to penicillin was noted in 64.4% of all isolates. Penicillinase Producing N.gonorrhoeae (PPNG) accounted for 62% of cases. Both penicillin and tetracycline showed an increasing resistance trend from 2001-2005. The third commonest antibiotic resistance was to kanamycin (38.3%), followed by ciprofloxacin (10.4%). The resistance to spectinomycin was 1.7%. No resistance was detected to ceftriaxone and cefuroxime. All gonorrhea patients in GUM Clinic, HKL were treated with ceftriaxone, and subsequent cultures on follow-up were negative. We compared our results with the data obtained from the Gonococcal Resistance to Antimicrobials Surveillance Programme (GRASP)6 and the WHO Western Pacific Gonococcal Antimicrobial Surveillance Programme (GASP)7. Conclusion Penicillin and tetracycline resistance remain high in Malaysia and other Western Pacific countries. Resistance to ciprofloxacin was however lower in Malaysia compared to other countries. There was no resistance to ceftriaxone and cefuroxime. The current first line antibiotic for treating gonorrhoea in GUM Clinic, HKL is ceftriaxone.