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近年来流行病学和血清学调查显示恙虫病分布较广、疫源地不断扩大、长江以北逐年增多。由于传统的病原分离和增殖方法有一定的限制，以及对弱毒株又无法从动物分离方法中获得，至使有的毒株丢掉。近年国内用L929细胞从病人血液分高立克次体已被证实。本文报告从野外疫区捕获的
Epidemiological and serological surveys in recent years show that scrub typhus is widely distributed, the epidemic continues to expand, increasing year by year north of the Yangtze River. Due to the limitations of traditional pathogen isolation and propagation methods, and the inability of attenuated strains to be obtained from animal separation methods, some strains are discarded. In recent years, domestic use of L929 cells from patients with high blood grams of blood has been confirmed. This article reports captured from wild endemic areas