Western Canadian Animal Health Network Information Library

Infographics, reports, and other western Canadian animal health surveillance information

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A retrospective study of 171 cases of equine meningoencephalomyelitis in the United States, 1996–2023

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Equine meningoencephalomyelitis was diagnosed in 171 cases between 1996 and 2023 at Cornell University. "A parasitic cause was identified in 32 (19%) cases, with protozoa in 18 (11%) cases and metazoa in 14 (8%) cases. A viral cause was identified in 31 (18%) cases, corresponding to infection by equid alphaherpesvirus 1 (EqAHV1; 12 of 31, 39%), eastern equine encephalitis virus (10 of 31; 32%), West Nile virus (5 of 31; 16%), and rabies virus (4 of 31; 13%), followed by 14 bacterial (8%) cases and 7 fungal (4%) cases."
meningoencephalomyelitis
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neuroinflammatory disease
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eqahv1