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Canadian Journal of Infectious Diseases and Medical Microbiology
Volume 26, Issue 5, Pages 273-276
Case Report

Bacteremia Due to Pasteurella dagmatisAcquired from a Dog Bite, with a Review of Systemic Infections and Challenges in Laboratory Identification

Jianhui Xiong,1 Sigmund Krajden,2,3,5 Julianne V Kus,4,5 Prasad Rawte,4 John Blondal,3 Mark Downing,2,3 Urszula Zurawska,3 and William Chapman1,5

1Department of Laboratory Medicine, Public Health Ontario, Canada
2Division of Infectious Diseases, Public Health Ontario, Canada
3Internal Medicine of St Joseph’s Health Centre, Public Health Ontario, Canada
4Public Health Ontario, Canada
5Department of Laboratory Medicine and Pathobiology, University of Toronto, Toronto, Ontario, Canada

Copyright © 2015 Hindawi Publishing Corporation. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


A case of bacteremia in a 74-year-old man, which was caused by Pasteurella dagmatis and complicated by thrombocytopenia, is presented. Microorganism identification was performed by the provincial reference laboratory using traditional biochemical profiling, completmented with both the sequencing of the 16S ribosomal RNA gene and matrix-assisted laser desorption/ionization time-of-flight mass spectrometry; antibiotic-susceptibility testing was also performed. After treatment with the appropriate antibiotics, the patient fully recovered. Systemic infections attributed to this organism are rarely reported in the literature. Other reported cases of bacteremia due to P dagmatis are reviewed and compared with the present case. The challenges of relying on standard automatic identification are discussed, with alternative methodologies provided.