引起肠毒素腹泻的菌种.从发病机理可将细菌感染性腹泻分为两类:一类是细菌浸入性膜泻;一类是肠毒素性腹泻。细菌侵入性腹泻的病原菌进入肠道后,或附着并侵入肠粘膜细胞(以痢疾杆菌为代表)而使人致病,或附着并侵入肠粘膜下层组织(以沙门氏菌为代表)而使人致病。肠毒素性腹泻系指产生肠毒素的细菌侵入肠道后,仅附着而不侵入肠粘膜上皮细胞,产生肠毒素而引起的腹泻。此 Bacteria causing enterotoxin diarrhea. Bacterial infectious diarrhea can be divided into two types from the pathogenesis: one is bacterial dipping diarrhea; one is enterotoxin diarrhea. Bacterial invasive diarrhea pathogenic bacteria enter the intestine, or adhesion and invasion of intestinal mucosal cells (represented by Shigella) and cause disease, or adhesion and invasion of intestinal submucosa (represented by Salmonella) and make people sick . Enterotoxigenic diarrhea refers to entero toxin-producing bacteria that invade the intestine and only attach without inva- sion of intestinal mucosal epithelial cells to produce enterotoxin-causing diarrhea. this