FIG 2.

Escherichia coli antibiotic resistance among Veterans Affairs outpatient facilities nationally, by CDC region, in 2009 to 2013. Results by CDC region represent the first isolate per patient per facility per month (CDC NHSN method). E N Central, East North Central Region; E S Central, East South Central Region; ES Ceph, extended-spectrum cephalosporin; FQ, fluoroquinolone; Mid Atlantic, Middle Atlantic Region; Mountain, Mountain Region; New England, New England Region; Pacific, Pacific Region; S Atlantic, South Atlantic Region; W N Central, West North Central Region; W S Central, West South Central Region. Data are the percent nonsusceptible (total number of isolates tested). Not every antibiotic category was tested for every isolate tested. The carbapenem category included imipenem, meropenem, doripenem, and ertapenem. The extended-spectrum cephalosporin category included ceftriaxone, ceftazidime, cefotaxime, and cefepime. The fluoroquinolone category included levofloxacin and ciprofloxacin.