Le Berre R, Garms R, Davies J B, Walsh J F, Philippon B
Philos Trans R Soc Lond B Biol Sci. 1979 Nov 20;287(1022):277-88. doi: 10.1098/rstb.1979.0061.
Regular aerial treatment of 14 000 km of watercourses has achieved and maintained, over an area of 700 000 km2 of West African savannah, a very high degree of control of the larvae of Simulium damnosum sensu stricto and S. sirbanum, the vectors of onchocerciasis in this area. However, particular and relatively restricted parts of this area, mainly in northern Ivory Coast and neighbouring parts of Upper Volta, experience regular and prolonged reinvasions by parous female vectors, which have already taken bloodmeals (and many of them carrying the parasites) and arrive from unknown sources probably hundreds of kilometres away, from directions probably between southwest and north. This reinvasion, now experienced in three successive years, represents the outstanding scientific, epidemiological and logistic problem still facing the WHO Onchocerciasis Control Programme. An outline is presented of the multidisciplinary investigations being undertaken to find a solution.
对14000公里河道进行定期空中处理，在面积达70万平方公里的西非大草原上，已实现并保持了对恶蚋指名亚种和锡尔班纳蚋幼虫（该地区盘尾丝虫病的病媒）的高度控制。然而，该地区一些特定且相对受限的区域，主要位于象牙海岸北部和上沃尔特的邻近地区，经常遭受已吸过血（其中许多携带寄生虫）的经产雌性病媒的定期且长时间的再次入侵，这些病媒可能来自数百公里外的未知来源，方向可能在西南和北方之间。这种连续三年出现的再次入侵，是世界卫生组织盘尾丝虫病控制规划仍然面临的突出科学、流行病学和后勤问题。本文概述了为找到解决方案而正在进行的多学科调查。
