对虾发病的原因很多,其中以微生物引起的病害较为严重,而在多种病原微生物之中,又以病毒性病害尤为突出.因为它流行广、死亡率高及药物难以奏效等特点,致使对虾人工养殖事业每年遭受巨大的损失.但 There are many reasons for the pathogenesis of shrimp, among which the diseases caused by microorganisms are more serious, and among the many kinds of pathogenic microorganisms, viral diseases are especially prominent because of its widespread epidemic, high mortality rates and the ineffectiveness of drugs, The farming industry suffers huge losses every year