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Editor,—We read with interest “The antibiotic susceptibility of Neisseria gonorrhoeae isolated in Ulaanbaatar, Mongolia” by Lkhamsuren et al.1 We also found high levels of resistance to penicillin, tetracycline, and ciprofloxacin. Of the 13 isolates which were successfully transported to our reference laboratory in Birmingham, Alabama, seven (54%) were PPNG, 3/13 (23%) were chromosomally resistant to penicillin, 2/13 (15.4%) were chromosomally resistant to tetracycline and 3/13 (23.1%) were resistant to ciprofloxacin with minimum inhibitory concentration (MICs) equal to 1.0 mcg/ml. However, we would like to clarify that although on site susceptibility testing in Ulaanbaatar using disk diffusion suggested resistance to ceftriaxone in some isolates,2 this was not confirmed by MICs.3 We agree with the authors that antibiotic resistance is a significant problem in Ulaanbaatar and that a surveillance system for antimicrobial resistance is needed.
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