Collins W E, Richardson B B, Sullivan J S, Morris C L, Galland G G
Division of Parasitic Diseases, Centers for Disease Control and Prevention, U.S. Public Health Service, Chamblee, Georgia 30341, USA.
J Parasitol. 1997 Dec;83(6):1099-103.
Anopheles freeborni mosquitoes fed during 85 primary and 26 recrudescent infections of the Uganda I/CDC strain of Plasmodium malariae in Saimiri and Aotus monkeys were examined for the presence of oocysts. Of these, 42 primary and 14 recrudescent infections were infective. Mosquitoes were more frequently infected when fed upon A. lemurinus griseimembra animals. A retrospective examination indicated the greatest mosquito infectivity occurred before the maximum parasite count. Mosquito infection was highest 4, 5, and 6 days after the parasite count exceeded 1,000/microl. Overall, 98 of 304 positive lots (32.2%) had > or = 50% of the individual mosquitoes infected. In addition, lots of An. freeborni were fed through membranes on the blood of 34 monkeys. During the days following the parasite count reaching > or = 1,000/microl, feedings on the animals resulted in lower levels of infection than membrane feeding, thus extending the period of mosquito infection.
对在感染了乌干达I/CDC株间日疟原虫的松鼠猴和夜猴身上出现的85次原发性感染及26次再燃感染期间进食的弗里伯恩按蚊进行了卵囊检查。其中，42次原发性感染和14次再燃感染具有传染性。以灰肢狐猴为食时，蚊子更易被感染。回顾性检查表明，蚊子的最大感染力出现在寄生虫计数最高值之前。在寄生虫计数超过1000/微升后的第4、5和6天，蚊子感染率最高。总体而言，304个阳性批次中有98个（32.2%）的个体蚊子感染率≥50%。此外，用弗里伯恩按蚊通过膜吸食34只猴子的血液。在寄生虫计数达到≥1000/微升后的几天里，吸食动物血液导致的感染水平低于膜吸食，从而延长了蚊子的感染期。
