Prevalence of and risk factor for community-onset third-generation cephalosporin-resistant Escherichia coli bacteremia at a medical center in Taiwan

Table 8 Drug susceptibilities (%) of Escherichia coli isolates among different groups

Antibiotics	Community-onset bacteremia			Urosepsis		Community-acquired bacteremia
Antibiotics	Overall (n = 676)	3GC S (n = 543)	3GC R (n = 133)	Overall (n = 335)	3GC S (n = 282)	Overall (n = 303)	3GC S (n = 274)
Amikacin	100.0	100.0	100.0	100.0	100.0	100.0	100.0
Ceftazidime	80.2	99.6	0.8	83.9	99.3	90.4	100.0
Ciprofloxacin	81.3	88.2	53.0	82.7	89.4	87.5	90.1
Cefmetazole	93.6	99.8	67.9	96.1	99.6	96.7	99.6
Cefotaxime	80.3	100.0	0.0	84.2	100.0	90.4	100.0
Cefazolin	73.8	91.9	0.0	76.4	90.8	83.8	92.7
Ertapenem	99.3	99.6	97.7	99.4	99.3	100.0	100.0
Cefepime	80.3	99.6	1.5	83.6	99.3	90.4	100.0
Gentamycin	81.4	86.9	58.6	80.0	84.0	87.1	88.7
Imipenem	99.7	99.6	100.0	99.4	99.3	100.0	100.0
Levofloxacin	81.2	88.2	52.6	82.4	89.4	87.1	90.1
Meropenem	99.7	99.6	100.0	99.4	99.3	100.0	100.0
Ampicillin/Sulbactam	44.1	52.3	10.5	42.7	48.2	51.1	55.1
Trimethoprim/Sulfamethoxazole	54.4	59.3	34.6	51.6	55.7	59.7	61.7
Tigecycline^a	100.0	100.0	100.0	100.0	100.0	100.0	100.0
Piperacillin/Tazobactam	95.0	97.0	86.5	95.5	95.7	96.7	97.4

^aDrug susceptibility to tigecycline was not tested on all isolates. Overall the results were only available on 460 isolates, among which 372 isolates are susceptible to 3GC. In urosepsis group, the results of drug susceptibility to tigecycline were only available on 209 isolates, among which 179 isolates are susceptible to 3GC. In community-acquired bacteremia group, the results of drug susceptibility to tigecycline were only available on 209 isolates, among which 187 isolates are susceptible to 3GC
Abbreviations: 3G, third-generation cephalosporin, S susceptible, R resistant

ISSN: 1471-2334