Population-based laboratory surveillance for Serratia species isolates in a large Canadian health region

  • K. B. Laupland
  • M. D. Parkins
  • D. B. Gregson
  • D. L. Church
  • T. Ross
  • J. D. D. Pitout


A population-based laboratory surveillance was conducted during a six-year period to define the incidence, demographic risk factors for acquisition, and anti-microbial susceptibilities of Serratia species isolates. A total of 715 incident Serratia species isolates were identified for an annual incidence of 10.8 per 100,000 residents; bacteremic disease occurred in 0.9 per 100,000 residents annually. The incidence increased with advancing age and males were at the highest risk. Ninety-two percent of the isolates were Serratia marcescens, and the majority (65%) of incident Serratia species isolates were of community onset. Ninety-five percent of isolates were susceptible to ciprofloxacin, 98% to gentamicin, 98% to trimethoprim/sulfamethoxazole, and >99% to imipenem. No yearly increase in resistance was observed. Serratia species isolation is most commonly of community onset and older patients and males are at increased risk. Despite reports of increasing resistance among Serratia species, the incidence in our region remains at a low stable rate.


Serratia Marcescens Urinary Tract Obstruction Demographic Risk Factor Calgary Health Region Serratia Species 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.



No external financial support was obtained for this study. None of the authors had financial, professional, or personal competing interests that would influence the conduct or reporting of this study.


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Copyright information

© Springer-Verlag 2007

Authors and Affiliations

  • K. B. Laupland
    • 1
    • 2
    • 3
    • 6
    • 7
  • M. D. Parkins
    • 1
  • D. B. Gregson
    • 1
    • 2
    • 5
  • D. L. Church
    • 1
    • 2
    • 5
  • T. Ross
    • 5
    • 6
  • J. D. D. Pitout
    • 2
    • 4
    • 5
  1. 1.Department of MedicineUniversity of Calgary and Calgary Health RegionCalgaryCanada
  2. 2.Department of Pathology and Laboratory MedicineUniversity of Calgary and Calgary Health RegionCalgaryCanada
  3. 3.Department of Community Health SciencesUniversity of CalgaryCalgaryCanada
  4. 4.Department of Microbiology and Infectious DiseasesUniversity of CalgaryCalgaryCanada
  5. 5.Division of MicrobiologyCalgary Laboratory ServicesCalgaryCanada
  6. 6.Centre for Anti-Microbial ResistanceUniversity of Calgary, Calgary Health Region, and Calgary Laboratory ServicesCalgaryCanada
  7. 7.Foothills Medical CentreCalgaryCanada

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