曾经影响世界上十几个国家和地区的SARS是否还会卷土重来？它的发病机理我们完全弄清楚了吗？有没有治疗它的特效药？它的疫苗何时问世？……SARS虽已过去好几个月了，但关于它的重重疑雾仍有待进一步揭开。SARS患者为何呼吸困难？SARS患者最难受的是呼吸困难，生不如死，以致 Has SARS, which has affected more than a dozen countries and regions in the world, still make a comeback? Is it completely clear from the pathogenesis of it? Is there a cure for it? When will its vaccine come out? ... Although SARS has been going on for several months, the heavy fog about it has yet to be further revealed. Why do patients with SARS have difficulty breathing? Patients with SARS are most difficult to suffer from breathing difficulties.