A laboratory mistake at the Centers for Disease Control and Prevention in Atlanta may have exposed a technician to the deadly Ebola virus, federal officials said on Wednesday. 联邦官员周三称,位于亚特兰大的疾病控制与预防中心(CentersforDiseaseControlandPrevention,简称CDC)实验室的一个失误,可能已使一名技术人员接触到致命的埃博拉病毒。