所谓自然疫源性疾病是存在于特定生态环境 (如原始状态或近似原始状态的荒野、森林、沼泽或丘陵 ) ,以野生动物(如啮齿动物、节肢动物 )为贮存宿主 ,以节肢动物或昆虫为传播媒介的一类疾病。当易感人群进入这一特定环境时 ,且与节肢动物密切接触而使人感染致病。立克次氏体病是 The so-called natural foci disease is exist in a specific ecological environment (such as the original state or near the original state of the wilderness, forests, swamps or hills), wild animals (such as rodents, arthropods) as the host, arthropods or insects For the media of a class of diseases. When the susceptible population into this particular environment, and in close contact with arthropods and make people infected with the disease. Rickettsia disease is