This work was presented as an oral abstract at the 2010 ACVIM Forum, Anaheim, California.
Standard Article
Idiopathic Immune-Mediated Thrombocytopenia and Recent Vaccination in Dogs
Article first published online: 13 DEC 2011
DOI: 10.1111/j.1939-1676.2011.00850.x
Copyright © 2011 by the American College of Veterinary Internal Medicine
Issue

Journal of Veterinary Internal Medicine
Volume 26, Issue 1, pages 142–148, January-February 2012
Additional Information
How to Cite
Huang, A.A., Moore, G.E. and Scott-Moncrieff, J.C. (2012), Idiopathic Immune-Mediated Thrombocytopenia and Recent Vaccination in Dogs. Journal of Veterinary Internal Medicine, 26: 142–148. doi: 10.1111/j.1939-1676.2011.00850.x
Publication History
- Issue published online: 10 JAN 2012
- Article first published online: 13 DEC 2011
- Manuscript Accepted: 4 NOV 2011
- Manuscript Revised: 3 SEP 2011
- Manuscript Received: 29 SEP 2010
- Abstract
- Article
- References
- Cited By
Keywords:
- Adverse reaction;
- Platelet recovery time;
- Platelets;
- Vaccine
Background
Vaccination is often cited as a potential cause of immune-mediated thrombocytopenia (ITP) in dogs. Although an association has been documented in humans, particularly in children, this relationship has not been definitively established in dogs.
Objectives
To identify the presence of an association between recent vaccination and ITP in dogs.
Animals
Forty-eight client-owned dogs with presumptive idiopathic ITP and 96 age-matched, client-owned dogs with non-immune-mediated disease.
Methods
Retrospective, case-control study. Dogs were identified through the Veterinary Medical Database (VMDB) and Hospital Information System at Purdue University.
Results
The median age at presentation for dogs with ITP was 7 years (range: 2–15 years). The majority of the ITP group was comprised of mixed breed dogs (38%); no pure breed was represented by more than 3 cases. The number of dogs that were vaccinated within 42 days of diagnosis of ITP did not differ significantly (P = .361) between cases of presumptive ITP (4/48, 8%) and the control group (13/96, 14%).
Conclusions and Clinical Importance
This study failed to confirm the presence of an association between presumptive idiopathic ITP in dogs and recent vaccination; however, the possibility of an association cannot be completely ruled out based on the small sample populations and requires further investigation.

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