Description given on Youtube:
Family Reoviridae
Genus Orbivirus
24 serotypes worldwide
6 serotypes isolated in the U.S.
Non-contagious
Insect-borne viral disease
Ruminants: Primary host is sheep
Others infected: Cattle, goats, deer
Sheep
Severity of disease varies
Breed
Strain of virus
Environmental stress
Morbidity
As high as 100%
Mortality
Usually 0 to 30%
Clinical Signs: Sheep
Incubation period: 5 to 10 days
Most asymptomatic
Oral erosions and ulcerations
Tongue
Swollen, protruding
Cyanotic
= “blue-tongue”
Reproductive failure
Cattle and goats
Usually subclinical
Erosions, crusts around nose and teats
Coronitis
Reproductive failure
Antelope and deer
Hemorrhage, death