我国东北林区莱姆病的调查

1987~1988年我们在牡丹江和延边林区对莱姆病进行了流行病学调查和临床观察,发现一些林场莱姆病的患病率和自然感染率较高。大青林场共有人口1 030人,在检查的628人中,发现莱姆病患者37例。在小白林场人群中进行了血清流行病学调查,发现伯氏包柔氏体自然感染率为22.5%。从牡丹江林区收集的全沟硬蜱中,分离出了3株包柔氏体,其中M7菌株经单克隆抗体测定和电镜观察,确证为伯氏包柔氏体。在医院收集162份疑似森林脑炎病人血清,其中38份血清抗伯氏包柔氏体抗体阳性。对15例经临床和血清学确诊的莱姆病患者进行了临床观察和治疗,证明大剂量青霉素可以治愈全身性红斑。并从1例慢性游走性红斑患者血液中分离出1株包柔氏体。

Investigation of Lyme Disease in Northeast of China

In 1987-1988, we conducted investigation of Lyme disease in Northeast of China. The disease was widespread in the forest areas of Heilonjiang and Jilin provinces where Ixodes persulcatus population thrives. The disease occurred at Daqing tree farm where 628 people were inquired and examined among them, 37 cases including 23 cases of ECM, 6 cases of neurological abnormalities, 7 cases of arthritis and 1 case of acrodermatitis chronica atrophicans were confirmed being Lyme disease. The sera of patients suspected with the disease and that of the residents at Xiaobai tree farm were tested for antibodies against Borrelia burgdorferi (B31) by ELISA. Seventeen out of 22 patients were positive and 54 out of 240 residents had significant IgG titers. Samples of tick midgut were inoculated into BSK medium and cultivated. Three isolates of spirochetes were cultivated from Ixodes persulcatus. One of them (M7) was confirmed being Borrelia burgdorferi. Recently another isolate was cultivated from a patient with ECM.