Scherer W F, Cupp E W, Dziem G M, Breener R J, Ordonez J V
Am J Trop Med Hyg. 1982 Sep;31(5):1030-7. doi: 10.4269/ajtmh.1982.31.1030.
Culex (Melanoconion) taeniopus is a vector of Venezuelan encephalitis (VE) virus at a marsh focus in Guatemala and has low mesenteronal thresholds for infection by and transmission of two enzootic strains of VE virus. In contrast, samples of natural populations and subsequent F2 and F4 generations of these mosquitoes have a high mesenteronal threshold for infection by an epizootic VE strain isolated at the same marsh during the end of the 1969 VE epidemic-equine epizootic. The resistance of Cu. (Mel). taeniopus to mesenteronal infection by this VE strain probably represents a key factor in the apparent disappearance of epizootic VE virus from the marsh focus following the 1969 outbreak.
致倦库蚊（黑须库蚊亚属）是危地马拉一处沼泽地疫源地委内瑞拉脑炎（VE）病毒的传播媒介，对两种地方性流行的VE病毒株的感染和传播具有较低的肠系膜感染阈值。相比之下，这些蚊子的自然种群样本以及后续的F2和F4代，对1969年VE疫情末期（马疫情）在同一沼泽地分离出的一种流行性VE病毒株的感染具有较高的肠系膜感染阈值。致倦库蚊（黑须库蚊亚属）对这种VE病毒株肠系膜感染的抗性，可能是1969年疫情爆发后该沼泽地疫源地流行性VE病毒明显消失的一个关键因素。
