Equine Adenovirus

Not high on the rule out list because it rarely causes problems in normal horses.  But, in what animal does it cause severe systemic disease?

Some Arabians carry a genetic defect, which when present in the homozygous state, causes Severe Combined Immunodeficiency Disease (SCID).  These animals are incapable of mounting an immune response.  Affected foals usually die of a pneumonia due to equine adenovirus, a virus which is harmless in immunocompetent animals.  This is a lung from a SCID foal.

 

 

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