Rosen L
C R Acad Sci III. 1987;304(13):347-50.
Both experimental and field data suggest that some tropical mosquito-borne flaviviruses, such as dengue and yellow fever, survive dry seasons by vertical (i.e. transgenerational) transmission in their mosquito hosts. Although vertical transmission of arboviruses in mosquitoes is considered to be transovarial in nature, observations reported here indicate that this is probably not true for dengue virus. Rather, infection of the next generation with this virus apparently takes place when the fully developed egg, enclosed in the chorion, is fertilized at the time of oviposition. In contrast to transovarial transmission, the latter mechanism permits the infection of progeny following a single maternal blood meal.
实验数据和实地数据均表明，一些热带蚊媒黄病毒，如登革热病毒和黄热病病毒，在其蚊虫宿主中通过垂直（即跨代）传播来度过旱季。虽然虫媒病毒在蚊子中的垂直传播本质上被认为是经卵传递，但此处报告的观察结果表明，登革热病毒可能并非如此。相反，当包裹在卵壳中的完全发育的卵在产卵时受精时，下一代显然会感染这种病毒。与经卵传递不同，后一种机制允许子代在母体单次吸食血液后被感染。
