摘要
<正>Porcine epidemic diarrhea(PED),caused by porcine epidemic diarrhea virus(PEDV),is an acute and highly contagious enteric disease of pigs.PED is characterized by watery diarrhea,vomiting and dehydration in sucking pigs,and the mortality rate as high as 100%for sucking pigs younger than 7 days of age after the virus infection.Since 2010,various mu-
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