Transmission of malaria around Niakhar, Sengal
Transmission of malaria around Niakhar, Sengal
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DOI：
10.1046/j.1365-3156.1998.00288.x
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发表时间：
1998-08-01
影响因子：
3.3
通讯作者：
Fontenille, D
中科院分区：
文献类型：
--
作者：
Robert, V;Dieng, H;Fontenille, D
1995年1-12月在塞内加尔尼亚哈尔萨赫勒农村的三个村庄对按蚊的生物生态学和疟疾传播进行了研究。这个拥有29000居民的地区几十年来一直是人口和健康的地区性观测站。采集蚊毛的三种方法分别是幼虫期采集、整夜人类叮咬采集和下午在屋内喷洒除虫菊酯。采集到的按蚊重要度数为：阿拉伯按蚊Anopheles arabiens，An.皱纹，一个。甘比安。Pharoensis，An.Funestus和An.库斯塔尼。在澳大利亚。冈比亚复合体，An.97%的男性叮咬雌性和98%的半孕休息雌性(差异不显著)；该复合体的其他提醒物种始终是一种。冈比亚亚目。这两个种都属于An。在整个传播过程中，是由合子复合体负责的。亲人指数，从一半妊娠的室内休息和。冈比亚占83%。一年的咬合率。冈比亚亚种根据村庄的不同，每人每晚被咬512到1558次不等。在旱季观察到的媒介生物都是梨长的，但密度较低。由于降雨，媒介种群呈现出显著的增长，在9月或10月初，每个人每晚最多被叮咬约10次；在9月，被叮咬的比率占全年叮咬稀有动物的48%。An.的子孢子指数。用ELISA法显示环子孢子蛋白的冈比亚吸虫对咬人的雌体为1.6%，对半孕期休眠的雌体为1.8%(差异不显著)。在感染的按蚊中，恶性疟原虫是唯一观察到的疟原虫物种。尼亚哈尔地区有代表性的两个村庄的年传播量为每封邮件咬9口和12口受感染的按蚊。主要发生在8月至10月的第三个村庄，不代表永久繁殖地的地区，传播是每人每年26口受感染的按蚊。在塞内加尔人和萨赫勒人的情况下讨论了这些结果。
The anopheline bioecology and the malaria transmission were studied from January to December 1995 in three villages of the sahelian rural area of Niakhar, Senegal. This area of 29 000 inhabitants, has been for several decades, a regional observatory for population and health. The three methods used fur collecting mosquitoes were the collection at larval stages, the all night human biting collection, and the pyrethrum spray catch in houses during afternoons. The anophelines collected were, by numerical importance: Anopheles arabiensis, An. rufipes, An. gambine, An. pharoensis, An. funestus and An. coustani. In the An. gambiae complex, An. arabiensis represented 97% of man biting females and 98% of half gravid resting females (difference not significant); the other reminding species of this complex was always An. gambiae. These two species belonging to the An. gambine complex were responsible for the totality of the transmission. The anthropophilic index, obtained from half gravid indoor resting An. gambiae s.l., was 83%. The annual biting rate of An. gambiae s.l. varied from 512 to 1558 bites per man per night, depending on the villages. Vectors were observed all pear long but their densities were low during the dry season. Vector population presented a notable increase due to the rains, with a maximum of about 10 bites per man per night in September or at the beginning of October; during September the biting rate represented 48% of the annual biting rare. The sporozoitic index of An. gambiae s.l., obtained by ELISA revealing the circumsporozoite protein, was 1.6% for human biting females and 1.8% for half-gravid resting females (difference not significant). Plasmodium falciparum was the only plasmodial species observed among infected anophelines. The annual transmission in the two villages representative of the Niakhar area were 9 and 12 bites of infected anophelines per mail. occurring mainly from August to October In the third village, not representative of the area regarding permanent breeding places, the transmission was 26 bites of infected anopheline per man per year. These results were discussed in the Senegambian and sahelian contexts.