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Volume 13, Number 3—March 2007

Research

Population-based Laboratory Surveillance for AmpC β-Lactamase–producing Escherichia coli, Calgary

Johann D.D. Pitout*Comments to Author , Daniel B. Gregson*, Deirdre L. Church*, and Kevin B. Laupland*
Author affiliations: *University of Calgary, Calgary, Alberta, Canada;

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Figure 2

First AmpC β-lactamase–producing Escherichia coli isolates per 1,000 E. coli isolates per year. Calgary Health Region, 2000–2003. Community isolates were those obtained from outpatients or admitted patients who had their first cultures obtained within 2 days of hospital admission. First cultures from other hospitalized patients obtained after 2 days of admission were deemed to represent hospital-onset isolates.

Figure 2. First AmpC β-lactamase–producing Escherichia coli isolates per 1,000 E. coli isolates per year. Calgary Health Region, 2000–2003. Community isolates were those obtained from outpatients or admitted patients who had their first cultures obtained within 2 days of hospital admission. First cultures from other hospitalized patients obtained after 2 days of admission were deemed to represent hospital-onset isolates.

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