针对近期非典新增病例下降和疫情出现缓和迹象,美国科学家却向人们警告,由于已发现非典具有季节性,今年冬天有可能再次出现非典疫情,对此应有充分准备。 《华盛顿邮报》刊登专家们的分析说,非典可能像流感一样有季节性,即使夏季传染性减弱,到寒冷的冬季可能会重新袭来。明尼苏 In view of the recent decline in SARS and the easing of the epidemic, U.S. scientists have warned people that due to the seasonal nature of SARS has been found, SARS may return again this winter and this should be fully prepared. An analysis by the Washington Post magazine experts said SARS may be as seasonal as a flu, and may catch up again in the cold winter, even as the contagion is weakened in summer. Minnesota