Medical Definition of pseudorabies
: an acute febrile virus disease of domestic animals (as cattle and swine) that is caused by a herpesvirus of the genus Varicellovirus (species Suid herpesvirus 1) and that is marked by cutaneous irritation and intense itching followed by encephalomyelitis and pharyngeal paralysis and commonly terminating in death within 48 hours—called also infectious bulbar paralysis, mad itch
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