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用Ｈｅｌａ细胞粘附试验或肠聚集性大肠杆菌（Ｅ（Ａｇｇ）ＥＣ）探针对Ｅ（Ａｇｇ）ＥＣ进行鉴定，ＤＮＡ探针的敏感度为４１％，特异度为９１％；用Ｅ（Ａｇｇ）ＥＣ探针鉴定艾希氏大肠杆菌（Ｅ·Ｃｏｌｉ）的感染率，广州病例组为２４％，对照组为３１％（Ｐ＝０．１８７），泰国病例组为１１％，对照组为４％（Ｐ＝０．０１４）。Ｈｅｌａ细胞试验鉴定的Ｅ（Ａｇｇ）ＥＣ感染率，广州病例组为１１％，对照组为１０％（Ｐ＝０．９８３），曼谷病例组为５％，对照组９％。聚集性模式中粘附Ｈｅｌａ细胞和用Ｅ（Ａｇｇ）ＥＣ探针杂交的Ｅ·Ｃｏｌｉ，有２７个Ｏ：Ｈ血清型及无血清型与腹泻有关。用Ｈｅｌａ细胞试验或用Ｅ（Ａｇｇ）ＥＣ探针杂交作鉴定的Ｅ（Ａｇｇ）ＥＣ与广州儿童的腹泻病无关。腹泻儿童中在未发现其他肠道病原菌的情况下，Ｅ（Ａｇｇ）ＥＣ可引起腹泻。
E (Agg) EC was identified using the Hela cell adhesion assay or enterotactic E.coli (E (Agg) EC) DNA probe with 41% sensitivity and 91% specificity; E ) EC probe was used to identify the infection rate of E.coli, 24% in Guangzhou case group, 31% in control group (P = 0.187), 11% in Thai case group and 4 in control group % (P = 0.014). The infection rate of E (Agg) EC identified by Hela cell assay was 11% in Guangzhou case group and 10% in control group (P = 0.983), 5% in Bangkok case group and 9% in control group. There are 27 O: H serogroups and serogroups associated with diarrhea in aggregated HeLa cells and E. Coli hybridized with E (Agg) EC probes. E (Agg) EC identified using Hela cell assays or hybridized with E (Agg) EC probes was not associated with diarrhea in children in Guangzhou. E (Agg) EC can cause diarrhea in children with diarrhea without other enteric pathogens.