1　流行病学1 1　传染源　现有资料表明,传染性非典型肺炎患者是主要传染源。处于症状明显期患者的传染性较强,特别是病情严重或是临床症状迅速恶化的病人,通常在发病的第二周,被认为最具传播力。尚无证据表明潜伏期具有传染性,但极少数病人前驱期具有传染性。目前在已治愈出 1 Epidemiology 1 1 Sources of Infection The available information shows that SARS patients are the main source of infection. In patients with obvious symptoms of infectious more strong, especially in patients with severe or rapid deterioration of clinical symptoms, usually in the second week of onset, is considered the most spread. There is no evidence that the incubation period is contagious, but very few patients are contagious in the prodromal period. Currently cured