流行性乙型脑炎(简称乙脑),系自然疫源性疾病,所以病毒在动物中的传播以及动物作为传染源的问题,早已引起人们的注意。根据国内外学者在乙脑流行区进行血清学调查的结果,发现家畜、家禽有对本病病毒的中和抗体和补体结合抗体,曾采用人工感染实验,证明马、羊、猪、狗、鸡、鸭等家畜、家禽,在感染本病病毒后,该病毒可在血中存留一至数天,并有病毒增殖,即动 Epidemic encephalitis (JE) is a natural foci of disease, so the spread of the virus in animals and animal as a source of infection has long attracted people’s attention. According to the results of serological investigation conducted by domestic and foreign scholars in JE endemic area, we found that domestic animals and poultry have neutralizing antibodies and complement-binding antibodies to the virus of the disease. Experiments using artificial infection have proved that horses, sheep, pigs, dogs, chicken , Ducks and other livestock, poultry, the virus infected with the disease, the virus can survive in the blood one to several days, and virus proliferation, that is, moving