Emergence of a Neisseria gonorrhoeae clone showing decreased susceptibility to cefixime in England and Wales

Stephanie Chisholm, Sarah Alexander, Leah Desouza-Thomas, Elisabeth Maclure-Webster, John Anderson, Thomas Nichols, Catherine Lowndes, Catherine A. Ison*, East Midlands, M. Minassian, L. Riddell, V. Weston, C. Bignell, M. Farrington, C. Carne, R. Mulla, T. Balachandran, B. Azadian, K. McLean, A. McOwanF. Boag, John Hunter Clinic, D. Krahe, M. Nathan, M. Graver, M. Tenant-Flowers, R. Holliman, P. Hay, A. Jepson, L. Green, B. MacRae, A. Robinson, S. Bragman, J. Russell, J. Wade, P. Riley, E. Jungmann, J. Magee, K. N. Sankar, T. Neal, P. Carey, A. Qamruddin, A. Sukthankar, J. Anson, J. Paul, G. Dean, A. Stacey, G. Wildman, M. Cubbon, A. Tang, R. Spencer, P. Horner, M. Logan, Z. Sulaiman, M. Williams, A. Lees, R. Howe, H. Birley, E. Kubriak, R. Das, M. Gill, J. Ross, H. Jones, J. Gray, D. Dobie, A. Tariq, M. Denton, J. Clarke, P. Zadik, G. Kinghorn

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

42 Citations (Scopus)


Objectives: The third-generation cephalosporins recommended in national guidelines are amongst the last remaining effective agents for treatment of gonorrhoea. This study characterizes gonococcal isolates with decreased cefixime susceptibility from England and Wales. Methods: A total of 96 isolates of Neisseria gonorrhoeae exhibiting cefixime MICs of ≥0.125 mg/L, either collected as part of the Gonococcal Resistance to Antimicrobials Surveillance Programme (GRASP) between 2005 and 2008 (54 from a total of 4649 isolates) or referred to the national reference laboratory in 2008 and 2009 (42 isolates), were tested for susceptibility to a range of antimicrobial agents and were typed using N. gonorrhoeae multiantigen sequence typing (NG-MAST). Results: All 96 isolates were also resistant to tetracycline (MIC ≥2 mg/L) and ciprofloxacin (MIC ≥16 mg/L) and 56% showed low-level chromosomal resistance to penicillin. Where data were available, the mean patient age was 31 years, and 88% (83/94) of patients were men. Isolates referred through GRASP were predominantly from men who have sex with men (MSM; 29/44, 66%) and from patients of white British ethnicity (25/43, 58%). The majority of isolates belonged either to sequence type (ST) 1407 (71/96, 74%) or to a highly related ST that shares the tpbB allele (allele 110), but with a different por allele (20/96, 21%). ST1407 was found in both MSM (22/29, 76%) and heterosexual patients (12/15, 80%) and among all eight isolates from patients reporting sex abroad. Conclusions: The emergence of a clonal group of gonococci showing decreased susceptibility to cefixime in England and Wales highlights the need for continued surveillance.

Original languageEnglish
Article numberdkr332
Pages (from-to)2509-2512
Number of pages4
JournalJournal of Antimicrobial Chemotherapy
Issue number11
Publication statusPublished - Nov 2011


  • Molecular typing
  • Surveillance
  • Treatment


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