Equine viral arteritis is an infectious disease of Equus animals,which transmitted through respiratory tract or reproductive tract,and is one of important diseases of horses.The application of all kinds of diagnostic techniques for the accurate diagnosis of the disease is the premise for the prevention and the control this disease.The EVA diagnostic techniques include detecting virus,serum antibodies.The technologies involved include virus isolation,the neutralization test, hemagglutination and hemagglutina...