莫瑞森教授在会上介绍说,现在蓝耳病的发生率并没有降低,需要我们更加深入的研究和探讨病毒的来源。在蓝耳病的控制方面,从母猪群中清除蓝耳病是可行的,很多的母猪场清除蓝耳病病毒花费的时间太久。有些猪场做的比较好,而有些猪场做的就不够好。在美国,蓝耳病会在每年的秋季发生全国流行。蓝耳病病毒到底来自哪里,我们现在还不太清楚,目前我们对蓝耳病的控制还是一头雾水,我们需 Professor Morrison introduced at the meeting that the incidence of blue-ear disease has not dropped yet, which requires us to study more deeply and investigate the origin of the virus. In the control of PRRS, removal of PRRS from sows is feasible and many sows spend too much time removing PRRSV. Some farms do better, while some farms do not good enough. In the United States, blue ear disease occurs nationally every fall. Where is the blue-collar virus? From now on, we do not know yet. At present, our control over blue-ear disease is still at a loss. We need