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Year : 2015  |  Volume : 33  |  Issue : 1  |  Page : 39-42

Rising trend of antimicrobial resistance among Neisseria gonorrhoeae isolates and the emergence of N. gonorrhoeae isolate with decreased susceptibility to ceftriaxone

1 Department of Microbiology, Maulana Azad Medical College, New Delhi, India
2 Department of Dermatology and Sexually Transmitted Diseases, Maulana Azad Medical College, New Delhi, India

Correspondence Address:
P Bhalla
Department of Microbiology, Maulana Azad Medical College, New Delhi
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Source of Support: None, Conflict of Interest: None

DOI: 10.4103/0255-0857.148374

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Context: Gonorrhoea is one of the most common sexually transmitted infections (STI) in developing countries and is a global health problem. Aims: To analyze the trend of antimicrobial susceptibility of Neisseria gonorrhoeae isolates over the years, in a tertiary care hospital of North India. Settings and Design: The study population comprised males with urethritis and females with endocervicitis attending STI clinic of our hospital. Materials and Methods: In our STI laboratory, all gonococcal isolates are subjected to antimicrobial susceptibility testing by disc diffusion method as per CLSI guidelines. β-lactamase production is determined by chromogenic cephalosporin test. Minimum Inhibitory Concentration (MIC) for ceftriaxone is determined by E-test. Statistical Analysis Used: Data were expressed as percentages. The differences in percentages were tested for statistical significance by using χ2 test and P values were determined. Results: The percentage of penicillinase producing N. gonorrhoeae (PPNG) increased from 8% in 1995-96 to 20% in 2004-05 and 88% in 2011-2013. Quinolone-resistant N. gonorrhoeae (QRNG) showed a significant increase from 12% in 1995-96 to 98.3% in 2004-05, while 84% isolates were found to be QRNG by 2011-2013. In January 2013 we detected our first gonococcal isolate with decreased susceptibility to third-generation cephalosporins; Ceftriaxone, Cefixime and Cefpodoxime (MIC for ceftriaxone = 0.19 μg/ml). Conclusions: The results of our study highlighted an alarming increase in the percentage of PPNG and QRNG strains over the years. Emergence of N. gonorrhoeae isolates with decreased susceptibility to third-generation cephalosporins is a cause of concern and thus emphasises the importance of antimicrobial susceptibility testing.


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2004 - Indian Journal of Medical Microbiology
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