现在世界上已从养殖鱼类中发现10多种病毒性疾病,分别在不同的国家流行。众所周知,鱼类病毒性疾病目前还没有有效的防治方法,一般认为是不治之症。而这些病在我国迄今还没有发现。近年来,随着我国与国际间有关水产方面的交往的增加,很有可能将这些病传入我国。所以我国在从国外引进鱼种或鱼卵、鱼精子时,必须把好进口检 More than 10 viral diseases have now been found in farmed fish in the world, each in a different country. It is well-known that there is currently no effective prevention and treatment method for fish viral diseases and it is generally considered as incurable disease. These diseases have not been discovered in our country so far. In recent years, as China and other international fisheries exchanges have increased, it is quite possible that these diseases will be introduced into our country. Therefore, when importing fish species or eggs and fish sperm from abroad, our country must make a good import inspection