关键词: 宿主动物, 媒介恙螨, 地理分布, 恙虫病东方体

Abstract: Objective In order to provide useful information for prevention and control of tsutsugamushi to study its geographical epidemiology.Methods First,the live mice in field were captured to test chigger mites.Second,the species distribution of the animal hosts and the insect vectors were analysed.Third,the PCR technology was used to detect the pathogen,and then the blood serum of mice and human being was collected to monitor the antibody to tsutsugamushi.Results The investigation indicated that there were 17 species of animal hosts in our region where the chigger mites could be divided into 2 families,10 genus,29 species.There were some places where the two kinds of tsutsugamushi epidemics,one of which was caused mainly by L.deliense outbreaking often in summer and autumn,the other was caused mainly by L.scutellare outbreaking often in winter and spring,both belonged to the infection type of natural focus.Conclusion We found out the primary animal host of the parasites,and much important information on the chigger mite vector and the main host animals of tsutsugamushi with species,quantities,geographical distributions,population distributions and the laws of the epidemic.