Wu G H, Guo H B, Yu M M
Institute of Military Medicine, Nanjing Command.
Zhonghua Yi Xue Za Zhi. 1994 Feb;74(2):94-6, 127.
In 1986, epidemic of tsutsugamushi disease of autumn-winter type was found in Jiangsu province. To clarify the vector of this disease, we carried out a series of studies in 1986-1992. Leptotrombidium (L.) scutellare was found to be a dominant species of chigger mite on rats in the endemic areas and its seasonal distribution was correlated with the incidence of tsutsugamushi disease in inhabitants. This mite could naturally be infected by Rickettsia tsutsugamushi, and R. tsutsugamushi could be transmitted via biting and transovarial transmission. Specific antibodies could be detected in the sera of mice bitten by the mites or inoculated with the suspension of mites. Serological typing of the sera of mice was of Gilliam type. The above results demonstrate that L. (L.) scutellare can serve as transmitting vector of tsutsugamushi disease of autumn-winter type.
1986年，江苏省发现秋冬型恙虫病流行。为阐明该病的传播媒介，我们在1986 - 1992年开展了一系列研究。结果发现，地里纤恙螨是流行区鼠体恙螨的优势种，其季节分布与当地居民恙虫病发病率相关。该螨可自然感染恙虫病立克次体，且恙虫病立克次体可经叮咬及经卵传递。被该螨叮咬或接种螨悬液的小鼠血清中可检测到特异性抗体。小鼠血清的血清学分型为吉利亚姆型。上述结果表明，地里纤恙螨可作为秋冬型恙虫病的传播媒介。
