The method has previously been used to fight rinderpest in Africa and Asia and hogcholera in South America.
这种方法此前曾被用于防控非洲和亚洲的牛瘟，以及南美洲的猪瘟。
2
The pig is the only animal in which hogcholera is known to occur naturally.
猪是已知自然发生猪瘟的唯一动物。
3
The artificial induced vertical transmission of hogcholera field virus in experiment was established by breeding 2 pigs which infected with middle toxicity of hogcholera field virus.