用户:特洛卡/临时草稿

[[File:F-diagram-01.jpg|thumb|upright=1.3|"F图" （Faces-粪便、Fingers-手指、Flies-双翅目、Fields-田野、Fluids-流体、Food-食物), 显示粪便-口腔疾病传播途径。垂直的蓝线显示切断路径的方式：厕所，安全的水，卫生和洗手。 粪口路径 (or alternatively the oral–fecal route or orofecal route) is a route of transmission of a disease, when 病原体 in 粪便 particles passing from one 宿主 are introduced into the 口腔 of another host. One main cause of fecal–oral disease transmission in 发展中国家 is lack of adequate sanitation and, often connected to that problem, 水污染 with fecal material.