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Equine herpes myeloencephalopathy.

C W Kohn, W R Fenner

    The Veterinary Clinics of North America. Equine Practice
    |August 1, 1987
    PubMed
    Summary
    This summary is machine-generated.

    Equine herpesvirus-1 (EHV-1) causes neurologic disease through central nervous system infarction. While no vaccine protects against EHV-1

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    Area of Science:

    • Veterinary Neurology
    • Equine Infectious Diseases
    • Virology

    Background:

    • Equine herpesvirus-1 (EHV-1), subtype 1, is the causative agent of a serious neurologic disease in horses.
    • The neurologic form is characterized by central nervous system infarction, stemming from vasculitis initiated in small blood vessel endothelial cells.
    • The exact mechanism, whether direct viral effect or immune response, causing vasculitis remains undetermined.

    Purpose of the Study:

    • To elucidate the pathogenesis of EHV-1 neurologic disease.
    • To discuss diagnostic challenges and prognosis.
    • To review current therapeutic and preventative strategies, including vaccination.

    Main Methods:

    • Review of existing literature on EHV-1 neurologic disease.

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  • Analysis of clinical signs, diagnostic limitations, and prognostic factors.
  • Evaluation of therapeutic interventions and vaccine efficacy.
  • Main Results:

    • Clinical signs are acute, nonprogressive, with potential for improvement.
    • Diagnosis is often tentative due to lack of a single confirmatory test.
    • Prognosis is generally fair, though recovery can be slow and incomplete.

    Conclusions:

    • Supportive care and corticosteroids may aid recovery; no specific antiviral or anti-vasculitis therapy exists.
    • Current vaccines do not guarantee protection against the neurologic form but are recommended for reducing other EHV-1 manifestations.
    • Regular vaccination may indirectly lower the incidence of neurologic EHV-1 by reducing overall farm infection rates.