Using PAGE method,we identify and analyse by RNA fecal specimens of 76 cases with infantile diarrhoea in the winter of 1985 in Binzhou City. 35 cases are positive(the positive rate,46.5 per cent).

• 1985年秋、冬季；对滨州市76例婴幼儿腹泻便标本；用聚丙烯酰胺凝胶法(PAGE)进行检测和RNA电泳型分析；阳性35例(阳性率46.；5%25)。