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Τρίτη 16 Ιανουαρίου 2018

In vitro antibiotic susceptibility pattern of Non-diphtheriae Corynebacterium in Ontario, 2011-2016. [PublishAheadOfPrint]

Non-diphtheriae Corynebacterium-associated disease has been increasingly observed and often presents a conundrum to the treating physician. Analysis of antibiotic susceptibility test data for 1,970 clinical Corynebacterium isolates received between 2011 and 2016 revealed that empiric drug treatment options are limited to vancomycin and linezolid. Corynebacterium striatum was the most frequently observed species during this study period along with C. amycolatum and C. pseudodiphtheriticum/propinquum. Low levels of susceptibility to penicillin (14.5%), erythromycin (15.1%) and clindamycin (8.7%) were observed for non-diphtheriae Corynebacterium species, while 3.0% of isolates were not susceptible to daptomycin. Similarly, 26.9% and 38.1% of Corynebacterium isolates were susceptible to ciprofloxacin and trimethoprim-sulfamethoxazole, respectively. Our data shows much lower susceptibility to penicillin than previously reported in literature and an increasing number of isolates resistant to daptomycin highlighting the need for continued antibiotic surveillance studies for appropriate patient management and treatment success.



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