上面的研究对于丙肝发现具有决定性意义，但是有一个很基本的问题就是：研究人员去探究病毒是否可以在体内复制并形成疾病，而这个时候，圣路易斯华盛顿大学的研究员查尔斯·赖斯（Charles M. Rice）等就起到了至关重要的作用。

Philadelphia health officials are warning residents after West Nile virus was found in mosquitoes in Northeast Philadelphia ...

First West Nile virus-positive mosquito pool found in Philadelphia near Pennypack Park. Health officials anticipate more ...

The United States of America has been dealing wth the brunt of the West Nile Virus, and that has alarmed the authorities.