Nandi J, Misra S P, Rajagopal R, Narasimham M V
NMEP, Delhi.
J Commun Dis. 1993 Mar;25(1):18-26.
A longitudinal study on malaria transmission was conducted from January 1984 to December 1988 in three villages in Boko PHC of Assam, where indoor residual DDT spray was withdrawn during the period of study. Anopheline fauna comprising of 19 species was identified and their seasonal density estimated. Anopheles philippinensis was the predominant species followed by An. minimus. The principal role of An. minimus in the transmission of malaria and predilection for indoor resting in this area was clearly evident. Though An. dirus and An. fluviatilis were found in low density, sporozoite infection was detected in them along with An. minimus. The high malaria incidence predominantly with Plasmodium falciparum was closely related to sporozoite infection in the vectors and their densities. The biting cycle of An. minimus was maximum in the first half of the night.
1984年1月至1988年12月，在阿萨姆邦博科初级卫生保健中心的三个村庄开展了一项关于疟疾传播的纵向研究，研究期间停止了室内残留滴滴涕喷洒。已鉴定出由19种按蚊组成的按蚊动物区系，并估计了它们的季节密度。菲律宾按蚊是主要种类，其次是微小按蚊。微小按蚊在该地区疟疾传播中的主要作用及其对室内栖息的偏好显而易见。尽管大劣按蚊和溪流按蚊密度较低，但在它们以及微小按蚊中均检测到子孢子感染。以恶性疟原虫为主的高疟疾发病率与媒介中的子孢子感染及其密度密切相关。微小按蚊的叮咬周期在夜间上半夜最长。
