viral arthritis/tenosynovitis - memberclicks · 2018. 10. 25. · viral arthritis/tenosynovitis...
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Viral Arthritis/TenosynovitisAAAP Slide Study Set
June 2018Prepared by:
Holly S. SellersPoultry Diagnostic & Research Center
University of Georgia, Athens, GA, USA
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Reoviruses
• Name derived from Respiratory Enteric Orphan
• Named “orphan” by Sabin in 1959 because the virus was not connected to any of the diseases it was associated with at the time
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Reoviridae
Sedoreovirinae
Cardoreovirus
Mimoreovirus
Orbivirus
Phytoreovirus
Rotavirus
Seadornavirus
Spinareovirinae
Aquareovirus
Coltivirus
Cypovirus
Dinovernavirus
Fijivirus
Idnoreovirus
Mycoreovirus
Orthoreovirus
Oryzavirus
Family Subfamily Genus
www.ictvonline.org
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Physiochemical Properties
• Heat resistant• 60C for 8-10 hrs• 56C for 22-24 hrs• 37C for 15-16 wks
• Very stable in poultry house environment• Survives for at least 10 days on feathers, wood shavings, egg shells and feed• Survives for 10 weeks in drinking water
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Stunted Growth
Swollen Hocks
Swollen Hocks
Swollen Hocks
Viral Arthritis - Clinical Signs
Images courtesy of Dr. Guillermo Zavala, Avian Health Int’l
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Tendon Lesions
• Severe arthritis• Severe tendonitis
Images courtesy of Dr. Guillermo Zavala, Avian Health Int’l
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Tendonitis
Images courtesy of Dr. Guillermo Zavala, Avian Health Int’l
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Edematous Tendon w/ Petechial Hemorrhages
Images courtesy of Dr. Guillermo Zavala, Avian Health Int’l
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Viral Arthritis/TenosynovitisReovirusesSlide Number 3Physiochemical PropertiesChemical SensitivitiesMorphologyS1 geneHostTransmissionHost SusceptibilityEconomic SignificanceSlide Number 12Tendon LesionsTendonitisEdematous Tendon w/ Petechial HemorrhagesRuptured TendonsPericarditis, Petechial Hemorrhages, And HydropericardiumReovirus-induced Histologic lesions�Tendon DiagnosticsSlide Number 20SerologyLaboratory Systems for Reovirus IsolationReovirus-induced cytopathic effect in cell cultureEmbryo lesionsReovirus GenotypingReovirus GenotypesSlide Number 27Prevention StrategiesVaccinationImmunity