click below
click below
Normal Size Small Size show me how
Reoviridae
African Horse Sickness (AHS)
Question | Answer |
---|---|
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 |