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High rate of linezolid intermediate susceptibility and resistance among enteric vancomycin-resistant Enterococcus (VRE) recovered from hospitalized patients actively screened for VRE colonization

  • Thomas J. Dilworth (a1), Eric T. Beck (a2), Rachel A. Pedersen (a3), Waseem G. Al-Karkokly (a2), Margaret M. Cook (a1), Erika K. Aldag (a1), David J. Kramer (a4), Ajay K. Sahajpal (a3), Iram Nadeem (a5), Brian P. Buggy (a5) and Charles F. Brummitt (a5)...


Corresponding author

Author for correspondence: Thomas J. Dilworth, Email:


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PREVIOUS PRESENTATION. This work was presented as poster no. 1225 at IDWeek 2018 on October 5, 2018, in San Francisco, California.



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1. Reyes, K, Bardossy, AC, Zervos, M. Vancomycin-resistant enterococci: epidemiology, infection prevention, and control. Infect Dis Clin North Am 2016;30:953965.
2. Kelesidis, T, Humphries, R, Uslan, DZ, Pegues, DA. Daptomycin nonsusceptible enterococci: an emerging challenge for clinicians. Clin Infect Dis 2011;5 2:228234.
3. Bi, R, Qin, T, Fan, W, Ma, P, Gu, B. The emerging problem of linezolid-resistant enterococci. J Glob Antimicrob Resist 2018;13:1119.
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5. Bagga, B, Buckingham, S, Arnold, S, Nesbitt, A, Guimera, D, Lee, K. Increasing linezolid-resistant Enterococcus in a children’s hospital. Pediatr Infect Dis J 2018;37:242244.
6. Clinical Laboratory Standards Institute. Ad hoc working group to reassess daptomycin breakpoint for enterococci. Published 2018. Accessed November 26, 2018.
7. Sader, HS, Farrell, DJ, Flamm, RK, Jones, RN. Analysis of 5-year trends in daptomycin activity tested against Staphylococcus aureus and enterococci from European and US hospitals (2009–2013). J Glob Antimicrob Resist 2015;3:161165.
8. Pfaller, MA, Mendes, RE, Streit, JM, Hogan, PA, Flamm, RK. Five-year summary of in vitro activity and resistance mechanisms of linezolid against clinically important gram-positive cocci in the United States from the LEADER Surveillance Program (2011–2015). Antimicrob Agents Chemother 2017;61:e0060917.
9. Cakirlar, FK, Samasti, M, Baris, I, et al. The epidemiological and molecular characterization of vancomycin-resistant enterococci isolated from rectal swab samples of hospitalized patients in Turkey. Clin Lab 2014;60:18071812.
10. Doern, CD, Park, JY, Gallegos, M, Alspaugh, D, Burnham, C-AD. Investigation of linezolid resistance in staphylococci and enterococci. J Clin Microbiol 2016;54:12891294.


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