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Volume 24, Number 9—September 2018
Research Letter

Spread of mcr-1–Driven Colistin Resistance on Hospital Surfaces, Italy

Elisabetta CaselliComments to Author , Maria D’Accolti, Irene Soffritti, Micol Piffanelli, and Sante Mazzacane
Author affiliations: Università Degli Studi di Ferrara, Ferrara, Italy

Main Article

Table

Antimicrobial susceptibility of the mcr-1–carrying bacterial isolates from hospital surfaces, Italy*

Bacteria
No. isolates
Drug-resistant isolates, % (MIC, mg/L)
F
AK
ATM
TZP
C
SXT
NET
CTX
Col-R
Acinetobacter Iwoffii 4 50 25 50 50 25 50 25 25 7 (4–8)
Citrobacter freundii 1 0 0 0 0 100 0 0 0 4
Enterobacter cloacae 3 100 100 33.3 100 33.3 33.3 100 33.3 16
Enterobacter agglomerans 3 100 0 0 100 0 0 100 0 5.3 (4–8)
Escherichia coli 4 100 50 25 100 0 25 100 50 10 (8–16)
Klebsiella pneumoniae 6 100 100 33.3 66.6 66.6 0 100 66.6 13.3 (8–16)
K. oxytoca 2 100 100 0 0 0 0 100 0 16
Pseudomonas aeruginosa 1 0 100 0 100 100 0 100 100 4
P. putida 1 0 100 0 0 100 0 100 0 8

*AK, amikacin 30 μg; ATM, aztreonam 30 μg; C, chloramphenicol 30 μg; Col-R, colistin resistant; CTX, cefotaxime 5 μg; F, nitrofurantoin 100 μg; NET, netilmicin 10 μg; SXT, trimethoprim/sulfamethoxazole 25 μg; TZP, piperacillin/tazobactam 36 μg.

Main Article

Page created: August 16, 2018
Page updated: August 16, 2018
Page reviewed: August 16, 2018
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