Cowling B J, Ho L M, Leung G M
Department of Community Medicine and School of Public Health, The University of Hong Kong, Hong Kong.
Epidemiol Infect. 2008 Apr;136(4):562-6. doi: 10.1017/S0950268807008722. Epub 2007 Jun 14.
One of the areas most affected by SARS was Beijing with 2521 reported cases. We estimate the effective reproductive number Rt for the Beijing SARS epidemic, which represents the average number of secondary cases per primary case on each day of the epidemic and is therefore a measure of the underlying transmission dynamics. Our results provide a quantitative assessment of the effectiveness of public health control measures. More generally, our results illustrate how changes in Rt will reflect changes in the epidemic curve.
受非典影响最严重的地区之一是北京,报告病例达2521例。我们估算了北京非典疫情的有效再生数Rt,它代表了疫情期间每天每个原发病例继发的平均病例数,因此是对潜在传播动态的一种衡量。我们的结果对公共卫生控制措施的有效性进行了定量评估。更普遍地说,我们的结果说明了Rt的变化将如何反映疫情曲线的变化。