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- Title
Eastern equine encephalitis in puppies in Michigan and New York states.
- Authors
Andrews, Caroline; Gerdin, Jodie; Patterson, Jon; Buckles, Elizabeth L.; Fitzgerald, Scott D.
- Abstract
Eastern equine encephalitis virus (EEEV) is classified as a select agent and is capable of causing mortality in humans and a number of veterinary species. Herein, we describe 3 cases of EEE in puppies in Michigan and New York. Two puppies were euthanized following an acute history of seizures and obtundation. A littermate of one of these puppies died 2 wk earlier following a history of anorexia and fever. All 3 puppies lacked significant gross anatomic lesions at autopsy and tested negative for rabies virus. In all 3 puppies, histologic examination revealed necrotizing, neutrophilic, lymphoplasmacytic meningoencephalitis with strong positive immunohistochemical labeling for EEEV antigen in neurons and glial cells. The diagnosis of EEE was confirmed by PCR in one puppy and by plaque reduction neutralization testing in the other 2 dogs. EEE is rare in dogs, and has only been reported in puppies. The initial clinical signs of EEE in puppies are typically nonspecific, including anorexia, fever, and diarrhea, but rapidly progress to severe neurologic disease characterized by seizures and recumbency. Although rare, EEE should be considered as a differential diagnosis for neurologic disease in puppies, especially after more common diseases, such as canine distemper, rabies, and toxoplasmosis have been ruled out.
- Subjects
EASTERN equine encephalomyelitis; ARBOVIRUSES; MENINGOENCEPHALITIS
- Publication
Journal of Veterinary Diagnostic Investigation, 2018, Vol 30, Issue 4, p633
- ISSN
1040-6387
- Publication type
Article
- DOI
10.1177/1040638718774616