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Canadian Journal of Infectious Diseases and Medical Microbiology
Volume 15, Issue 3, Pages 171-173
Case Report

Recurrent Chronic Ambulatory Peritoneal Dialysis-Associated Infection due to Rothia dentocariosa

Shaun K Morris,1 Shudeshna Nag,2 Kathryn N Suh,3 and Gerald A Evans3

1Department of Pediatrics, Hospital for Sick Children and University of Toronto, Toronto, Ontario, Canada
2Faculty of Health Sciences, Queen’s University, Kingston, Ontario, Canada
3Division of Infectious Diseases, Department of Medicine, Queen’s University, Kingston, Ontario, Canada

Received 25 August 2003; Accepted 6 February 2004

Copyright © 2004 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.


Rothia dentocariosa is a commensal organism of the human oropharynx. Clinical infection due to this organism is rare. A case of recurrent peritoneal dialysis-related peritonitis caused by R dentocariosa and a review of the literature is reported. Isolation of R dentocariosa from dialysate fluid should not be dismissed as a contaminant. Although there are no interpretive criteria for antimicrobial susceptibility testing, R dentocariosa appears to be susceptible to a variety of antibiotics including beta-lactams, vancomycin and aminoglycosides. Optimal therapy of peritoneal dialysis peritonitis caused by this organism may also require removal of the catheter.