Difference between revisions of "Reoviridae"

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==Introduction==
 
  
==Orbiviruses==
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=Introduction=
===Bluetongue Virus===
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Reoviridae include rotaviruses and orbiviruses, such as African Horse Sickness and Bluetongue.  Pathogenesis ranges from acute alimentary infections to infections of the vascular endothelium.  "REO" stands for "Respiratory-Enteric-Orphan."
*May cause [[Muscles Degenerative - Pathology#Ischaemia|muscle ischaemia]] due to vasculitis in sheep, see [[Muscles Inflammatory - Pathology#Bluetongue|viral myositis]]
 
  
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=Morphology=
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*All are non-enveloped dsRNA viruses
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*Spherical and medium-sized with characteristic appearances
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*Segmented genome, with each segment encoding a separate viral protein
  
*African horse sickness in [[Respiratory Viral Infections - Pathology#African horse sickness|respiratory disease]]
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=Virulence and Pathogenesis=
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*Reoviridae are '''resistant''' viruses that can persist in the environment for several weeks
  
==Rotaviruses==
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=Epidemiology=
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*Many reoviruses infect domestic animals without causing disease
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*They have been implicated in stunting syndrome of chickens
  
* Play a part in [[Intestines Catarrhal Enteritis - Pathology#Undifferentiated Neonatal Calf Diarrhoea|undifferentiated neonatal calf diarrhoea]], a mixed viral enteritis in calves.
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=Types and Subtypes=
* A cause of [[Intestines Enteritis Particularly Associated with Villus Atrophy - Pathology#Reoviridae#Rotaviruses|villus atrophy]]
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==[[Rotaviruses]]==
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==Orbiviruses==
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===[[Bluetongue Virus]]===
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===[[African Horse Sickness]]===
  
==Orthoreoviruses==
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=Diagnosis=
  
==Coltiviruses==
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=Control=

Revision as of 19:59, 14 October 2008



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VIRUSES



Introduction

Reoviridae include rotaviruses and orbiviruses, such as African Horse Sickness and Bluetongue. Pathogenesis ranges from acute alimentary infections to infections of the vascular endothelium. "REO" stands for "Respiratory-Enteric-Orphan."

Morphology

  • All are non-enveloped dsRNA viruses
  • Spherical and medium-sized with characteristic appearances
  • Segmented genome, with each segment encoding a separate viral protein

Virulence and Pathogenesis

  • Reoviridae are resistant viruses that can persist in the environment for several weeks

Epidemiology

  • Many reoviruses infect domestic animals without causing disease
  • They have been implicated in stunting syndrome of chickens

Types and Subtypes

Rotaviruses

Orbiviruses

Bluetongue Virus

African Horse Sickness

Diagnosis

Control