Data collection for this study was performed in states with primary exposed horses. Study design, coordination, data analysis, and manuscript preparation were performed at USDA–APHIS–VS in Fort Collins, CO. This work was conducted as part of the regular duties of State Animal Health Officials and USDA–APHIS–VS personnel. No external funding supported the work. At the time of submission, this work has not been presented at a previous meeting.
Case–Control Study of a Multistate Equine Herpesvirus Myeloencephalopathy Outbreak
Article first published online: 7 FEB 2013
Copyright © 2013 by the American College of Veterinary Internal Medicine
Journal of Veterinary Internal Medicine
Volume 27, Issue 2, pages 339–346, March/April 2013
How to Cite
Traub-Dargatz, J.L., Pelzel-McCluskey, A.M., Creekmore, L.H., Geiser-Novotny, S., Kasari, T.R., Wiedenheft, A.M., Bush, E.J. and Bjork, K.E. (2013), Case–Control Study of a Multistate Equine Herpesvirus Myeloencephalopathy Outbreak. Journal of Veterinary Internal Medicine, 27: 339–346. doi: 10.1111/jvim.12051
- Issue published online: 15 MAR 2013
- Article first published online: 7 FEB 2013
- Manuscript Accepted: 8 JAN 2013
- Manuscript Revised: 20 DEC 2012
- Manuscript Received: 4 OCT 2012
Data S1. Case definitions used in USDA–APHIS–VS recommendations for exposed horses to EHV-1 or EHM.
Table S1. List of the number of primary exposed horses, number of PEH cases (EHV-1 or EHM suspect or confirmed cases eligible for inclusion in study), number of eligible controls, and number of selected controls by state.
Table S2. Characteristics of horses, housing, health management, and travel reported by owner/trainer survey respondents for the three comparison groups and for all horses.
Table S3. Univariable odds ratios (OR) and 95% confidence intervals (CI) for EHM risk factors comparing EHM cases (n = 19) with EHV-1 cases with no reported neurological signs (n = 14).
Table S4. Univariable odds ratios (OR) and 95% confidence intervals (CI) for EHM risk factors and covariates comparing EHM cases (n = 19) with controls (n = 90).
Data S2. Case and Control Horse questionnaire.
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