Table 5.

Prevalence of single-drug and multidrug resistance among 38,835 E. coli urinary tract isolates tested against all five antimicrobials by geographic region (as reported to TSN 1 January to 30 September 2000)

Region% Single-drug resistance% Multidrug resistanceMost prevalent MDR phenotype
East North Central22.75.8Ampicillin, cephalothin, SXT
East South Central23.56.0Ampicillin, cephalothin, SXT
Mid-Atlantic19.47.8Ampicillin, cephalothin, SXT
Mountain19.16.6Ampicillin, cephalothin, SXT
New Englanda – – 
Pacific19.98.4Ampicillin, cephalothin, SXT
South Atlantic19.96.7Ampicillin, cephalothin, SXT
West North Central21.44.3Ampicillin, cephalothin, SXT
West South Central18.39.2Ampicillin, cephalothin, SXT
 All regions20.07.2Ampicillin, cephalothin, SXT
  • a Cephalothin results were not reported by laboratories in the New England region participating in TSN; thus, no phenotype comparisons were possible for this region.