Ree H I, Cho M K, Lee I Y, Jeon S H
Institute of Tropical Medicine, Yonsei University, Seoul, Korea.
Korean J Parasitol. 1995 Mar;33(1):27-36. doi: 10.3347/kjp.1995.33.1.27.
Comparative epidemiological studies on vector reservoir animals of tsutsugamushi disease were carried out in between south coast (the highest endemic) areas and east coast (low endemic) areas in October 1993. Fauna of field rodents and their population densities were not different between two areas. Antibody positive rate of Apodemus agrarius sera was higher in east coast (43.2% in south coast and 63.6% in east coast). High correlation (r = 0.87) was shown between antibody positive rate of A. agrarius sera and population density of the vector mites (Leptotrombidium scutellare and L. pallidum). L. scutellare was predominant in south coast, showing 110.6 chigger index (74.9% of the total chiggers), whereas L. pallidum was predominant in east coast, showing 126.3 chigger index (60.4% of the total). As higher population density of L. scutellare was found in south coast where the prevalence rate of tsutsugamushi disease is the highest, it is believed that L. scutellare is more important vector species than L. pallidum, which may result from more frequent vector-human contact.
1993年10月，在恙虫病媒介储存宿主动物方面开展了南海岸（高流行区）和东海岸（低流行区）之间的比较流行病学研究。两个地区的野鼠动物区系及其种群密度并无差异。黑线姬鼠血清抗体阳性率在东海岸较高（南海岸为43.2%，东海岸为63.6%）。黑线姬鼠血清抗体阳性率与媒介螨（小板纤恙螨和苍白纤恙螨）的种群密度之间呈现高度相关性（r = 0.87）。小板纤恙螨在南海岸占主导地位，恙螨指数为110.6（占恙螨总数的74.9%），而苍白纤恙螨在东海岸占主导地位，恙螨指数为126.3（占恙螨总数的60.4%）。由于在恙虫病患病率最高的南海岸发现小板纤恙螨的种群密度更高，因此认为小板纤恙螨比苍白纤恙螨更重要的媒介物种，这可能是由于媒介与人类接触更频繁所致。
