One killer virus, three key questions

摘要

There are five sets of eyepieces on the microscope, and Sherif Zaki is looking down one of them. Looking down the other four are members of the team he leads at the infectious-disease pathology branch at the Centers for Disease Control and Prevention (CDC) in Atlanta, Georgia. Other researchers trained in epidemiology, microbiology and electron microscopy watch a large, flat-screen monitor at the end of the narrow conference room that shows an image projected from the microscope.