Trends in antimicrobial resistance among Bacteroides species and Parabacteroides species in the United States from 2010-2012 with comparison to 2008-2009 Journal Article

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Authors: Snydman, D. R.; Jacobus, N. V.; McDermott, L. A.; Goldstein, E. J.; Harrell, L.; Jenkins, S. G.; Newton, D.; Patel, R; Hecht, D. W.
Article Title: Trends in antimicrobial resistance among Bacteroides species and Parabacteroides species in the United States from 2010-2012 with comparison to 2008-2009
Abstract: The susceptibility trends for Bacteroides fragilis and related species against various antibiotics were determined using data from 3 years of surveillance (2010-2012) on 779 isolates referred by 7 medical centers. The antibiotic test panel included imipenem, ertapenem, meropenem, ampicillin-sulbactam, piperacillin-tazobactam, cefoxitin, clindamycin, moxifloxacin, tigecycline, linezolid, chloramphenicol and . MICs were determined using the agar dilution CLSI reference method. Carbapenem resistance remained low (range 1.1%-2.5%) and unchanged from 2008 to 9 through 2010-2012. Resistance also remained low to the beta-lactam/beta-lactamase inhibitor combinations (1.1%-4.4%). While resistance to clindamycin and moxifloxacin remained high; rates were lower for B. fragilis in 2010-12 (24% and 19% respectively) compared to the earlier time frame of 2008-9 (29% and 35% respectively for the earlier time frame). There were notable species and resistance associations which have been demonstrated previously. No resistance to metronidazole or chloramphenicol resistance was seen. These data demonstrate the continued variability in resistance among Bacteroides and Parabacteroides species, but do demonstrate that carbapenems and beta-lactam/beta-lactamase inhibitor combinations remain very active throughout the United States.
Journal Title: Anaerobe
Volume: 43
ISSN: 1095-8274; 1075-9964
Publisher: Elsevier Inc  
Journal Place: England
Date Published: 2017
Start Page: 21
End Page: 26
Language: eng
DOI/URL:

S1075-9964(16)30144-5
Notes: LR: 20170204; CI: Copyright (c) 2016; JID: 9505216; OTO: NOTNLM; 2016/08/12 [received]; 2016/11/14 [revised]; 2016/11/16 [accepted]; ppublish