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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
Example
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
Example
Reoviridae
Sedoreovirinae
Cardoreovirus
Mimoreovirus
Orbivirus
Phytoreovirus
Rotavirus
Seadornavirus
Spinareovirinae
Aquareovirus
Coltivirus
Cypovirus
Dinovernavirus
Fijivirus
Idnoreovirus
Mycoreovirus
Orthoreovirus
Oryzavirus
Family Subfamily Genus
www.ictvonline.org
Example
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
Example
Stunted Growth
Swollen Hocks
Swollen Hocks
Swollen Hocks
Viral Arthritis - Clinical Signs
Images courtesy of Dr. Guillermo Zavala, Avian Health Int’l
Example
Tendon Lesions
• Severe arthritis• Severe tendonitis
Images courtesy of Dr. Guillermo Zavala, Avian Health Int’l
Example
Tendonitis
Images courtesy of Dr. Guillermo Zavala, Avian Health Int’l
Example
Edematous Tendon w/ Petechial Hemorrhages
Images courtesy of Dr. Guillermo Zavala, Avian Health Int’l
Example
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