Fontenille D, Lepers J P, Campbell G H, Rakotoarivony I, Coluzzi M, Coulanges P
Institut Pasteur de Madagascar, Antananarivo.
Arch Inst Pasteur Madagascar. 1990;57(1):335-68.
To evaluate the factors determining malaria transmission level, entomological and parasitological surveys were conducted from October 1988 to February 1990 in MANARINTSOA, in the central highland plateaux of MADAGASCAR. Mosquitoes were collected during 928 man-nights of captures, in pit shelters and in indoors resting sites. The malaria vectors were An. arabiensis and An. funestus, with no evidence of the presence of An. gambiae s.s. The vectors were mainly exophilic and zoophilic. The index of stability was below 1.5. The sporozoite rate was 0.11 for An. gambiae s.l. and 0.47 for An. funestus. The transmission level was low: the inoculation rate was 0.91 infected bite per man and per year and the infection risk 0.62. Transmission occurs 7 months per year, from November to May. In the human population parasite rates fluctuated from 29% in October to 53% in May.
为评估决定疟疾传播水平的因素，1988年10月至1990年2月在马达加斯加中部高原的马纳林佐阿开展了昆虫学和寄生虫学调查。在928个人夜的捕获期间，于坑式庇护所和室内休息场所采集蚊子。疟蚊种类为阿拉伯按蚊和嗜人按蚊，未发现冈比亚按蚊指名亚种存在的证据。这些蚊媒主要为外栖性和嗜动物性。稳定性指数低于1.5。冈比亚按蚊复合组的子孢子率为0.11，嗜人按蚊的子孢子率为0.47。传播水平较低：接种率为每人每年0.91次感染叮咬，感染风险为0.62。传播每年发生7个月，从11月至次年5月。人群中的寄生虫感染率在10月为29%，5月为53%，呈波动状态。
