Changes

'''Mortality''' is highest in turkey '''poults''' and is usually due to secondary bacterial infection.

'''Mortality''' is highest in turkey '''poults''' and is usually due to secondary bacterial infection.

'''Tachypnoea, nasal discharge, dyspnoea, sneezing, abnormal breathing'''.

Respiratory disease is most common and causes '''tachypnoea, nasal discharge, dyspnoea, sneezing, abnormal breathing'''.

'''Decrease in egg production''' and reproductive failure. Folded egg membranes and egg peritonitis may develop.

Clinical disease is usually accompanied by a '''decrease in egg production''' and reproductive failure. Folded egg membranes and egg peritonitis may develop consequentially.

'''Torticollis''', reluctance to move, swelling of the head, face and eyes, head shaking.

'''Torticollis''', reluctance to move, swelling of the head, face and eyes and head shaking are manifestations of more severe cases.

 

'''Lack of growth''' and retardation will occur in young birds infected by TRV.

==Diagnosis==

==Diagnosis==

Serological diagnosis can be achieved by '''[[ELISA testing | ELISA]]'''.

Serological diagnosis can be achieved by '''[[ELISA testing | ELISA]]'''.