乙脑减毒活疫苗，英文名称Japanese Encephalitis Vaccine,Live。为淡黄色疏松体，复溶后为橘红色或淡粉红色澄明液体。接种本疫苗后，可刺激机体产生抗乙型脑炎病毒的免疫力。用于预防流行性乙型脑炎。
结论乙脑病毒减毒株sa14 - 14 - 2的遗传学特性稳定，从分子水平证明了乙脑减毒活疫苗的安全性。
Conclusion The JEV attenuated strain SA14-14-2 is genetic stability after passaged continuously on PHKC to 20 generations, and proved a good safety on molecular level.
GACVS审议了一系列新近由专家递交的关于乙脑病毒减毒活疫苗SA 14 - 14 - 2株安全特性的资料。
GACVS considered recent data on the safety profile of live attenuated sa 14-14-2 JE vaccine, provided in a number of expert presentations to the Committee.
为了解乙型脑炎（乙脑）减毒活疫苗弱毒株SA14 14 2神经毒力的减弱程度，本文对弱毒株及其原株SA14强毒株进行了猴体和小白鼠的致病性和病理学变化的比较试验。
In order to study the attenuation of neurovirulence of SA14 14 2 attenuated vaccine virus, monkeys and mice were tested with the strain and its parent SA14 virulent strain.
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