Bluetongue Virus

Bluetongue viruses are infectious, noncontagious viruses in the family Reoviridae and genus Orbivirus (Fig. 1 and 2) that are transmitted to domestic and wild ruminants (sheep, cows, goats, deer) by biting midges (no-see-ums) in the genus Culicoides (Fig. 3) (3). The viruses are nonenveloped and the icosohedral 54-nm-diameter capsid contains the 10 segments of the linear double-stranded RNA genome of approximately 25 kilobases (1, 2). The disease is found worldwide. Due to the seasonal increase in the vector, disease is most prevalent mid summer to early fall. These images show bluetongue virus in a thin section of lamb kidney cells negatively stained with 2% phosphotunsgtate.

See also:

Bluetongue Virus Infection in Cattle

Bluetongue Virus Infection in Sheep

References.

1. Roy, P. 2001. Orbiviruses, p. 1679–1728. In D. M. Knipe and P. M. Howley (ed.), Fields virology. Lippincott Williams and Wilkins, Philadelphia, Pa.

2. Tyler, K. L. 2001. Mammalian reoviruses, p. 1679–1728. In D. M. Knipe and P. M. Howley (ed.), Fields virology. Lippincott Williams and Wilkins, Philadelphia, Pa.

3. Walton T. E., and B. I. Osburn. 1991. Bluetongue, African horse sickness, and related Orbiviruses. Proceedings of the Second International Symposium. CRC Press, Boca Raton, Fla.

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Author	Thomas Walton
Author - Secondary	Erica Suchman

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Bluetongue virus particle (Enlarged view)	FIG. 1. Electron microscopic photo of bluetongue virus particle in lamb kidney cells
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Bluetongue virus particle (Enlarged view)	FIG. 2. Electron microscopic photo of bluetongue virus particles magnified 78,000x in lamb kidney cells.
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Bluetongue virus particle (Enlarged view)	FIG. 3. Electron microscopic photo of bluetongue virus particles magnified 57,000x in lamb kidney cells. Note the arrow is pointing to a donut-shaped capsome from which the Orbiviruses are named.
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Bluetongue virus particle (Labeled view)	(Labeled view)

Information	Bluetongue viruses are infectious, noncontagious viruses in the family Reoviridae and genus Orbivirus (Fig. 1 and 2) that are transmitted to domestic and wild ruminants (sheep, cows, goats, deer) by biting midges (no-see-ums) in the genus Culicoides (Fig. 3) (3). The viruses are nonenveloped and the icosohedral 54-nm-diameter capsid contains the 10 segments of the linear double-stranded RNA genome of approximately 25 kilobases (1, 2). The disease is found worldwide. Due to the seasonal increase in the vector, disease is most prevalent mid summer to early fall. These images show bluetongue virus in a thin section of lamb kidney cells negatively stained with 2% phosphotunsgtate. See also: Bluetongue Virus Infection in Cattle Bluetongue Virus Infection in Sheep References. 1. Roy, P. 2001. Orbiviruses, p. 1679–1728. In D. M. Knipe and P. M. Howley (ed.), Fields virology. Lippincott Williams and Wilkins, Philadelphia, Pa. 2. Tyler, K. L. 2001. Mammalian reoviruses, p. 1679–1728. In D. M. Knipe and P. M. Howley (ed.), Fields virology. Lippincott Williams and Wilkins, Philadelphia, Pa. 3. Walton T. E., and B. I. Osburn. 1991. Bluetongue, African horse sickness, and related Orbiviruses. Proceedings of the Second International Symposium. CRC Press, Boca Raton, Fla.
Related Content	Bluetongue Virus Infection in Cattle Bluetongue Virus Infection in Sheep
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