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African Horse Sickness (AHS)

Reportable? YES. Has never been reported in the Western Hemisphere
Hosts: Horses, donkeys, and mules. Dogs (after eating infected horse meat)
Transmission: Culicoides spp.
Pathogenesis: Replication in local lnn.->transient primary viremia->infection of various organs and tissues->secondary viremia->vasiculitis of small and medium-sized blood vessels
Clinical signs of the Pulmonary Form (acute) for the disease: Spasmodic coughing, profuse sweating and frothy discharge from the nostrils. HIGH MORBIDITY and 95% MORTALITY!!
Clinical signs of the Cardiac Form: Edema of the supraorbital fossa, eyelids, lips, tongue, intermandibular space, and subQ towards the chest. High Morbidity and 50-70% Mortality
Clinical signs of the Mild Form: Fever for a few days, depression, and recovery
Prevention and control: Horses should be protected from flies during disease outbreaks. USA-> 60 day quarantine on all horses from outside the country
Created by: lkollmeier