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Inrecentlyyears,EMSoutbreakswidelyinmanyarea,whichbringheavylossforshrimpfarming.Therearedatashowsthatthesurvivalratenomorethan30%duringthefirsthalfyearoffortheprovincesofsouthernpartofChina,Especially,forYuexiareaandGuangxiprovince,evenreachthelowestvalueinhistory.ThecircumstancealsothesamefortheeasternChinaandnorthChina,thesurvivalrateinJinagsuprovinceisabout20%.AndtherearealsoEMSreportinsouthEastcountries.EMSmaketheshrimpfarmingindustrysufferfromoneseverechallenge.

近年来，EMS普遍爆发在许多地区，这为虾养殖带来重大损失。有数据显示,生存率不超过30%。年上半年中国南部的省份,特别是粤西地区和广西历史上甚至达到最小值，情况也相同的华东和华北，江苏省的存活率约为20%。还有EMS在东南亚国家报告。EMS使虾养殖行业受到严重的挑战。

OnceEMShappens,alwaysalongwiththehepatopancreaslesionindifferentdegree,whichderivefromthedeclinationinresistanceandweekanti-stressability,withthereasonoftheattackofEMSforgutandhepatopancreas.Hepatopancreasisthespecificreferenceofliveronshrimp,whichconvertedfromthemid-intestine,







































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