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Volume 16, Number 1—January 2010
Dispatch

Broiler Chickens as Source of Human Fluoroquinolone-Resistant Escherichia coli, Iceland

Thorunn R. ThorsteinsdottirComments to Author , Gunnsteinn Haraldsson, Vala Fridriksdottir, Karl G. Kristinsson, and Eggert Gunnarsson
Author affiliations: University of Iceland, Reykjavík, Iceland (T.R. Thorsteinsdottir, G. Harladsson, V. Fridriksdottir, K.G. Kristinsson, E. Gunnarsson); Landspitali University Hospital, Reykjavík (G. Haraldsson, K.G. Kristinsson)

Main Article

Table

Antimicrobial drug resistance among Escherichia coli isolates collected from broiler ceca and feed during 2008 compared with isolates collected from ceca and meat during 2005–2007 (1), Iceland*

Antimicrobial drug Resistant strains, no. (%)
2005–2007
 2008
Ceca, n = 110 Meat, n = 75 Ceca, n = 40 Feed, n = 22
Ampicillin 20 (18.2) 12 (16.0) 0 0
Cefotaxime 0 0 0 0
Ceftiofur 0 0 0 0
Chloramphenicol 0 0 0 0
Ciprofloxacin 20 (18.2) 27 (36.0) 17 (42.5) 7 (31.8)
Enrofloxacin 16 (14.5) 25 (33.3) NT NT
Florfenicol 1 (0.9) 0 0 0
Gentamicin 2 (1.8) 1 (1.3) 0 0
Nalidixic acid 20 (18.2) 27 (36.0) 17 (42.5) 7 (31.8)
Kanamycin 1 (0.9) 0 0 0
Streptomycin 9 (8.2) 7 (9.3) 2 (5.0) 0
Sulfamethoxazole 21 (19.1) 11 (14.7) 2 (5.0) 0
Tetracycline 15 (13.6) 8 (10.7) 1 (2.5) 0
Trimethoprim 16 (14.5) 10 (13.3) 1 (2.5) 0

*NT, not tested. Resistance breakpoints (mg/mL): ampicillin, >16; cefotaxime, >0.5; ceftiofur, >2; chloramphenicol, >32; ciprofloxacin, >0.12; enrofloxacin, >0.5; florfenicol, >32; gentamicin, >8; nalidixic acid, >32; kanamycin, >16; streptomycin, >64; sulfamethoxazole, >512; tetracycline, >16; trimethoprim, >4.

Main Article

Page created: March 31, 2011
Page updated: March 31, 2011
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