东南沿海南日岛部队驻地恙虫病自然疫源地调查及防治研究

Investigation on the Epidemiologic site of Scrub Typhus on Nanri Island and study on Prevention and Treatment

为查明东南沿海南日岛驻地恙虫病疫源地及流行病学特征，对该岛恙虫病患者４５例进行分析和流行病学调查研究，结果表明该岛存在恙虫病流行，属夏季型；临床症状典型，并出现多脏器功能损害。黄毛鼠、褐家鼠为优势种储存宿主，地里纤恙螨为主要媒介恙螨。从患者全血中分离到２株恙虫病立克次体，其ＬＤ５０＞７．６。人、鼠、螨ＰＣＲ／ＲＦＬＰ分型均属Ｋａｒｐ型。

From May to Sep.1997,45 patients from Nanri island(putian,FuJian Province)infected with scrub typhus were treated.Clinical analysis and epidemioloic study of the cases showed that the disease spreads on the island.The disease is of summer type with typically clinical symptoms.The patients were complicated with multiorgan damage.The reservoir hosts yellow furry mouse and brown house mouse were superior species.The main vector is Leptotrombidium deliense.Two strains of Richettsia tsutsugamushi were isolated from the patients whole blood with their LD50>7 6.The type of PCR/RFLP is that of Karp.