Volume 21, Number 5—May 2015
Letter
Ciprofloxacin-Resistant Shigella sonnei Associated with Travel to India
Figure

Figure. Dendrogram of ciprofloxacin-resistant Shigella sonnei digested with XbaI enzyme. Isolate identification numbers and country location for origin of infection are shown. In column on far right, antibiogram abbreviations indicate resistance to antimicrobial drugs: A, ampicillin; S, streptomycin; Su, sulfamethoxazole; T, tetracycline; Tm, trimethoprim; Na, nalidixic acid; Cp, ciprofloxacin; Ctx, cefotaxime. Scale bar indicates evolutionary distance. PFGE, pulsed-field gel electrophoresis.