我国恙虫病的流行病学研究现状分析

Scrub typhus is a zoonosis, caused by Orientia tsutsugamushi. The disease is wildly distributed in many areas and districts of the world. It was reported only in southern China. However, in recent years, it has been epidemic in many Provinces of northern China. Scrub typhus has already formed the tendency of increase, dissemination and diffusion in China. The article has analyzed the epidemic status of scrub typhus in China at present. The epidemic features of the disease are diffusion of epidemic focus, enhancement of epidemic strength, increase of epidemic areas in autumn and winter, diversification of epidemic foci and prototypes. Influence factors which caused the epidemic features of scrub typhus in China maybe related with the enhancement of diagnostic technology, decline of attention, emergence of secondary vegetable, changes of natural environment and variability of pathogens. It is also pointed out urgent problems need to be resolved in the epidemiological research of scrub typhus in China.