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2WHO SARS:breaking the Chains of transmission, (August 18, 2003. http://www.hoint/features/2003/07/en/)
3WHO Summary table of SARS cases by country, (August 18, 2003.http://www.hoint/csr/sars/country/en/country2003_08_15pdf)
4中国新闻社.北京累计隔离观察三万余人, (June 25,2003. http://www.china news.com.cn/homehtml)China News . More than thirty thousands persons were cumulatively isolated in Beijing, (June 25,2003. http://www.china.news.com.cn/homehtml)
5中华人民共和国卫生部. 全国内地非典型肺炎疫情统计表,(August 18, 2003. http//www.moh.gov.cn/zhgl/yqfb/1200308160002-1-0d oc)Ministry of Health, People′s Republic of China.China's Mainland′s SARSstatistical tabie,( August 18, 2003.http//www.moh.gov.cn/zhgl/yqfb/1200308160002-1-0d oc)
8US CDC. CDC April 30 updates interim US surveillance case definition for severe acute respiratory syndrome (SARS), (May 22, 2003.http://www.cdc.gov/od/oc/media/transcripts/t030430htm)
9US CDC. July 17, 2003 update to SARS case definition reduces US cases by half, (August 20, 2003. http://www.cdc.gov/od/oc/media/pressrel/r030717ahtm)
10US CDC update. severe acute respiratory syndrome united states, MMWR, 2003, 52,466-468.
