Fig 1.

Pulsed-field gel electrophoresis profiles of the patient's Escherichia coli meningitis isolate and closely related strains from sequence type ST131. Abbreviations: FQ, fluoroquinolone phenotype; R, resistant; S, susceptible; ESBL, extended-spectrum β-lactamase; NEG, negative; POS, positive. Shown are the patient's cerebrospinal fluid isolate (JJ1867; boldface), the index isolate for pulsotype 968 (JJ2142; asterisk), and the 10 next most similar isolates (relative to the patient's isolate) in a large private pulsotype library (J.R.J.). All isolates represent pulsotype 968. Note the broad geographic range of the isolates (which spans multiple widely distributed locales in the United States and Canada), the diversity of sources (blank = unknown), and the broad host range (human, dog, and dolphin).