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Avian pneumovirus : ウィキペディア英語版
Avian pneumovirus

Avian metapneumovirus (also known as ''Turkey Rhinotracheitis Virus − Swollen Head Syndrome'') is a virus which infects primarily turkeys and, to a lesser extent, chickens. Other domesticated fowl such as pheasants can also be affected.
Transmission is via the respiratory tract and the disease is widespread over most continents. High stocking density allows the virus to spread more easily.
==Clinical signs and diagnosis==
Clinical signs being as mild respiratory symptoms such as nasal discharge, tachypnoea and dyspnoea. The reproductive system can be infected and this leads to a drop in egg production.
Turkey poults can be severely affected and show neurological signs and death.
Young birds that survive the infection will be stunted.
ELISA enables a serological diagnosis. Viral neutralisation, indirect immunofluorescence and now PCR can detect antigen in tissues.
In turkeys, viral isolation can be performed on samples from the respiratory tract and mouth.

抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)
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