细菌致泻过程实质上是该菌在小肠定居、侵袭、繁殖并产生毒性物质，引起肠段吸收障碍，肠腺分泌亢进，或进一步在淋巴组织和血液中繁殖的过程。已证明产志贺样毒素且具侵袭力大肠杆菌（ＥＳＩＥＣ）具有志贺样毒素和侵袭性毒素〔１〕，可引起实验小鼠小肠粘膜水肿、坏死、... Bacterial diarrhea process is essentially the bacteria in the small intestine to settle, invasion, reproduction and produce toxic substances, causing intestinal absorption disorders, intestinal gland secretion, or further lymphoid tissue and blood reproduction process. Shiga-like toxin-like and invasive E. coli (ESIEC) has been shown to have Shiga-like toxins and aggressive toxins [1] and can cause small intestinal mucosal edema, necrosis, ...