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