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LETTERS TO THE EDITOR

First Description of mcr-1-Mediated Colistin Resistance in Human Infections Caused by Escherichia coli in Latin America

Melina Rapoport, Diego Faccone, Fernando Pasteran, Paola Ceriana, Ezequiel Albornoz, Alejandro Petroni, the MCR Group, Alejandra Corso
Melina Rapoport
aServicio Antimicrobianos, National and Regional Reference Laboratory in Antimicrobial Resistance, Instituto Nacional de Enfermedades Infecciosas (INEI)-ANLIS Dr. C. Malbran, Buenos Aires, Argentina
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Diego Faccone
aServicio Antimicrobianos, National and Regional Reference Laboratory in Antimicrobial Resistance, Instituto Nacional de Enfermedades Infecciosas (INEI)-ANLIS Dr. C. Malbran, Buenos Aires, Argentina
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Fernando Pasteran
aServicio Antimicrobianos, National and Regional Reference Laboratory in Antimicrobial Resistance, Instituto Nacional de Enfermedades Infecciosas (INEI)-ANLIS Dr. C. Malbran, Buenos Aires, Argentina
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Paola Ceriana
aServicio Antimicrobianos, National and Regional Reference Laboratory in Antimicrobial Resistance, Instituto Nacional de Enfermedades Infecciosas (INEI)-ANLIS Dr. C. Malbran, Buenos Aires, Argentina
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Ezequiel Albornoz
aServicio Antimicrobianos, National and Regional Reference Laboratory in Antimicrobial Resistance, Instituto Nacional de Enfermedades Infecciosas (INEI)-ANLIS Dr. C. Malbran, Buenos Aires, Argentina
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Alejandro Petroni
aServicio Antimicrobianos, National and Regional Reference Laboratory in Antimicrobial Resistance, Instituto Nacional de Enfermedades Infecciosas (INEI)-ANLIS Dr. C. Malbran, Buenos Aires, Argentina
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aServicio Antimicrobianos, National and Regional Reference Laboratory in Antimicrobial Resistance, Instituto Nacional de Enfermedades Infecciosas (INEI)-ANLIS Dr. C. Malbran, Buenos Aires, Argentina
Alejandra Corso
aServicio Antimicrobianos, National and Regional Reference Laboratory in Antimicrobial Resistance, Instituto Nacional de Enfermedades Infecciosas (INEI)-ANLIS Dr. C. Malbran, Buenos Aires, Argentina
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DOI: 10.1128/AAC.00573-16
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Tables

  • TABLE 1

    Characteristics of mcr-1-harboring E. coli isolates

    CharacteristicE. coli isolate:Salmonella sp. strain TC-M19736
    M15049M15224M17059M17056M19241M19242M19441M19736M19855
    Isolation dateJuly 2012Oct. 2012Nov. 2013Nov. 2013Mar. 2015Apr. 2015July 2015Nov. 2015Jan. 2016
    Diagnostic/underlying disease of patientNeurologic diseaseDiabetesAppendicitisUrinary tract infectionProstate cancerHeart failureRheumatoid arthritisSecondary peritonitis/colon cancerNAa
    Isolation siteBloodUrineAbdomenBloodUrine (catheter)Urine (catheter)BoneBloodAbscess
    Hospital123333456
    MIC (μg/ml)b of:
        Colistin816888888816
        Polymyxin B8161688888816
    Additional resistance(s)cTET, TMS, CIP, FOSAMP, FGC, NIT, MIN, TMS, CIP, FOSAMP, AMS, FGC, ESC, GEN, MIN, CIPAMP, CIPCIPAMP, AMS, FGC, ESC, TMS, GENAMP, AMS, FGC, ESC, CMP, GEN, MIN, CIPAMP, AMS, CMP, CIPAMP, AMS, FGC, ESC, GEN, MIN, CIPNone
    ESBLd genesNoneNoneCTX-M-14 groupNoneNoneCTX-M-2 groupCTX-M-15 groupNoneCTX-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.

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First Description of mcr-1-Mediated Colistin Resistance in Human Infections Caused by Escherichia coli in Latin America
Melina Rapoport, Diego Faccone, Fernando Pasteran, Paola Ceriana, Ezequiel Albornoz, Alejandro Petroni, the MCR Group, Alejandra Corso
Antimicrobial Agents and Chemotherapy Jun 2016, 60 (7) 4412-4413; DOI: 10.1128/AAC.00573-16

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First Description of mcr-1-Mediated Colistin Resistance in Human Infections Caused by Escherichia coli in Latin America
Melina Rapoport, Diego Faccone, Fernando Pasteran, Paola Ceriana, Ezequiel Albornoz, Alejandro Petroni, the MCR Group, Alejandra Corso
Antimicrobial Agents and Chemotherapy Jun 2016, 60 (7) 4412-4413; DOI: 10.1128/AAC.00573-16
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