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- TABLE 1
Characteristics of mcr-1-harboring E. coli isolates
Characteristic E. coli isolate: Salmonella sp. strain TC-M19736 M15049 M15224 M17059 M17056 M19241 M19242 M19441 M19736 M19855 Isolation date July 2012 Oct. 2012 Nov. 2013 Nov. 2013 Mar. 2015 Apr. 2015 July 2015 Nov. 2015 Jan. 2016 Diagnostic/underlying disease of patient Neurologic disease Diabetes Appendicitis Urinary tract infection Prostate cancer Heart failure Rheumatoid arthritis Secondary peritonitis/colon cancer NAa Isolation site Blood Urine Abdomen Blood Urine (catheter) Urine (catheter) Bone Blood Abscess Hospital 1 2 3 3 3 3 4 5 6 MIC (μg/ml)b of: Colistin 8 16 8 8 8 8 8 8 8 16 Polymyxin B 8 16 16 8 8 8 8 8 8 16 Additional resistance(s)c TET, TMS, CIP, FOS AMP, FGC, NIT, MIN, TMS, CIP, FOS AMP, AMS, FGC, ESC, GEN, MIN, CIP AMP, CIP CIP AMP, AMS, FGC, ESC, TMS, GEN AMP, AMS, FGC, ESC, CMP, GEN, MIN, CIP AMP, AMS, CMP, CIP AMP, AMS, FGC, ESC, GEN, MIN, CIP None ESBLd genes None None CTX-M-14 group None None CTX-M-2 group CTX-M-15 group None CTX-M-14 group ↵a NA, not available.
↵b Susceptibility to colistin and polymyxin B was evaluated by agar dilution.
↵c AMP, ampicillin; AMS, ampicillin-sulbactam; FGC, first-generation cephalosporins; ESC, extended-spectrum cephalosporins; TET, tetracycline; MIN, minocycline; TMS, trimethoprim-sulfamethoxazole; CIP, ciprofloxacin; FOS, fosfomycin; NIT, nitrofurantoin; GEN, gentamicin; CMP, chloramphenicol.
↵d ESBL, extended-spectrum β-lactamase.