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Volume 19, Number 5—May 2013


Campylobacter coli Outbreak in Men Who Have Sex with Men, Quebec, Canada, 2010–2011

Christiane GaudreauComments to Author , Melissa Helferty, Jean-Loup Sylvestre, Robert Allard, Pierre A. Pilon, Michel Poisson, and Sadjia Bekal
Author affiliations: Centre Hospitalier de l’Université de Montréal–Hôpital Saint-Luc, Montreal, Quebec, Canada (C. Gaudreau); Université de Montréal, Montreal (C. Caudreau, M. Poisson, P.A. Pilon); Agence de la Santé et des Services Sociaux–Santé Publique de Montréal, Montreal (M. Helferty, J.-L. Sylvestre, R. Allard, P.A. Pilon); McGill University, Montreal (R. Allard); Centre Hospitalier de l’Université de Montréal–Hôtel-Dieu, Montreal (M. Poisson); Laboratoire de Santé Publique du Québec/Institut National de Santé Publique du Québec, Sainte-Anne-de-Bellevue, Quebec, Canada (S. Bekal); Public Health Agency of Canada, Ottawa, Ontario, Canada (M. Helferty)

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Table 2

Antimicrobial drug susceptibility results for Campylobacter coli pulsovar 1 isolates from 10 patients, Montreal, Quebec, Canada, 2010–2011*

Antimicrobial agent† MIC (mg/L) Interpretation
Erythromycin 2–4 S
Azithromycin 0.25–0.5 S
Tetracycline 128–256 R
Ciprofloxacin >32 R
Nalidixic acid >256 R
Ampicillin 2–4 S
Gentamicin 0.5–1 S
Cefotaxime >32 R
Imipenem 0.06–0.12 S
Clindamycin 0.25–0.5 S
Chloramphenicol 2–4 S
Tigecycline ≤0.015 NA
β-lactamase‡ Negative

*S, susceptible; R, resistant; NA, not available; –, not applicable.
†The susceptibility and resistance breakpoints were Clinical and Laboratory Standards Institute (CLSI) Campylobacter breakpoints for erythromycin, tetracycline and ciprofloxacin (10), National Antimicrobial Resistance Monitoring System Campylobacter breakpoints for azithromycin and clindamycin (11), no breakpoints available for tigecycline and CLSI Enterobacteriaceae breakpoints for the 6 other antimicrobial agents (12).
‡β-lactamase susceptibility was determined as described (9).

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