摘要
本文对以往云南省登革热病原学、血清学和蚊媒调查资料进行了整理分析。从采自河口市的２９批雌性白纹伊蚊（Ａｅｄｅｓａｌｂｏｐｉｃｔｕｓ）中分离到登革４型病毒１株。从采自西双版纳地区（景洪、勐腊、勐海）的７２批２７２６只雌性白纹伊蚊中分离到登革病毒４株，其中４型３株，３型１株。批阳性率５．６％，现场感染比为１∶６８２。本省２４个县、市人血清中登革ＣＦ抗体阳性率为１０．９１％（１８５／１６９６），１５个县、市人血清中登革ＨＩ抗体阳性率为１５．０１％（２９９／１９９２）。抗体阳性率以西南边境热带地区的河口等地为高，中部和北部地区的阳性率较低或查不到登革抗体。经血清学试验证实，河口和西双版纳发热患者中存在有登革热病例。本省西南部动物血清中登革ＨＩ抗体阳性率：恒河猴为２２．５５％（４６／２０４），猪为９．１４％（１８／１９７），棕果蝙蝠为３．９２％（２／５１），猎狗为１５．４５％（５１／３３０），鸟类为５．５１％（１４／２５４）。４型是当地人和动物中登革热主要抗体，与病毒分离结果相符。白纹伊蚊在云南主要分布于西南部边境热带地区，为优势蚊种。该蚊白天活动，并有多次吸血的特性。分析认为，云南存在登革热病毒的自然循环，并发生过?
There were 24 387 adult female mosquitoes belonging to 45 species of 8 genera captured from the outdoor bamboo forcsts in the daytime in south western part of Yunnan Provice. The component rate of Aedes albopictus was 30.46%(7 429/24 387).Four strains of dengue(DEN) type 4 virus, a strain of DEN type 3 virus were isolated from Ae. albopictus. The specimen positive rate of Ae. albopictus was 5.6%(per 100 pools) and mosquito body virus carrier rate of 1∶682. The positive rate of CF antibody against DEN virus was 10.91% (185/1 695) and the positive rate of HI antibody against DEN was 15.01%(299/1 992) from health human sera in south western part of Yunnan. The positive rates of HI antibody against DEN of Macaca mullata , pig, bat, dog and bird sera were respectively 22.55% (46/204) ,9.14%(18/197),3.92%(2/51),15.45%(51/330) and 5.51%(14/254).DEN type 4 was the main antibody in local human population and animals. As mentioned above, DEN antibody was detected in humans and animals, and cases of recent infection or latent infection might have been present. At the same time, DEN virus was also isolated from Ae. albopictus, and it was the dominant species of mosquitoes in local bamboo forests. All these suggested that there was Dengue natural foci in border area ,south western part of Yunnan and persisted mainly in areas of tropics and subtropics below an altitude of 1 000 m.
出处
《地方病通报》
1999年第3期50-54,共5页
Endemic Diseases Bulletin
关键词
登革热
流行病学
云南省
Dengue fever
Epidemiology
Yunnan Province
