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. 2006 Apr 7;2:6. doi: 10.1186/1744-8603-2-6

Table 5.

Resistance prevalence of eight common bacteria, U.S. (all patients pooled), 1999–2002

unit: %
Bacterium Resistant to antibiotic(s) 1999 2000 2001 2002 Average Resistance Average Growth Rate

PAE Ciprofloxacin/ofloxacin 23 25 28 29 26 8
Levofloxacin 29 30 31 30 30 1
Imipenem 12 12 15 13 13 4
Ceftazidime 8 8 9 9 9 4
Piperacillin 10 10 11 12 11 6
SAU (MRSA) Methicillin 32 35 38 39 36 7
Enterococcus spp Vancomycin 11 8 10 10 10 -1
ECO Cef3 1 1 1 1 1 0
Quinolone 2 3 4 5 4 36
KPN Cef3 4 4 4 5 4 8
Enterobacter spp Cef3 19 19 18 19 19 0
Carbapenum 1 1 1 1 1 0
CNS Methicillin 60 61 62 63 62 2
Pneumococcus spp Penicillin 14 16 19 19 17 11
Cef3 5 8 7 7 7 16
Mean: 17 7