- Widespread infection caused by Equine adenovirus (EAV) .
- Incidence : subclinical: widespread in normal foals; acute: immunodeficient foals (especially Arabian).
- Signs : usually subclinical; mild upper respiratory tract (URT) disease in normal foals; immunodeficiency may → severe interstitial pneumonia → death.
- Diagnosis : virus isolation.
- Treatment : usually unnecessary; symptomatic.
- Prognosis : good except in Arabian foals with SCID syndrome [Immunology: combined immunodeficiency] when grave.
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Clinical signsMost horses
- Mild URT infection.
- Fever - mild and transient.
- Mild bilateral nasal discharge.
- Severe interstitial and bronchopneumonia with muffled normal airway sounds and extensive adventitious noises.
- Ocular/nasal discharge.
- Ulcerated oral mucosa.
- Generally: good.
- Arab foals with SCID: grave.