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目的:分析全球新型冠状病毒肺炎疫情流行趋势，为疫情防控提供相关基础数据。方法:收集截至2020年8月15日全球新型冠状病毒肺炎的流行病学数据与各国政府部门实施的防控政策，采用累计发病率、累计死亡率、累计病死率和五天移动平均实时再生数（n Rn t）指标分析疫情流行趋势，探讨主要政策措施对疫情控制的效果。n 结果:截至8月15日，全球COVID-19累计报告发病率27.66/万，累计报告死亡率0.10‰，累计报告病死率4%。累计报告发病率前3位国家为卡塔尔、巴林、圣马力诺，发病率（/万）分别为404.41、280.61、208.69；累计报告死亡率前3位国家分别为圣马力诺、比利时、秘鲁，死亡率（‰）分别为1.22、0.87、0.80；累计病死率前3位国家为也门、法国、意大利，病死率（%）分别为28.42、14.33、13.94。截至2020年8月15日，n Rn t（95% n CI）前3位的国家分别为新西兰6.63（4.57，9.08）、博茨瓦纳2.43（2.16，2.71）和缅甸2.20（1.64，2.51）。n 结论:截至8月15日，全球大部分国家的COVID-19疫情渐趋平稳，部分国家疫情出现反扑现象，应当警惕，及时采取防控措施。“,”Objective:To analyze the global trends of coronavirus disease 2019 (COVID-19) epidemics, so as to provide basic data for epidemic prevention and control.Methods:The epidemiological data worldwide and the prevention and control policies implemented by governments of all countries before August 15, 2020 were collected. The cumulative incidence rate, cumulative mortality, cumulative fatality rate and values of five-day moving average time dependent reproduction number (n Rn t) were used to analyze the epidemic trends and discuss the effect of major policy measures.n Results:By August 15, a cumulative incidence of 2 766 per 10 000, a cumulative mortality rate of 0.10‰ and a cumulative case fatality rate of 4% had been reported globally. Qatar, Bahrain and San Marino were the top three countries in terms of cumulative incidence (per 10 000) of 404.41, 280.61 and 208.69, respectively. San Marino, Belgium and Peru were the top three countries with the cumulative mortality rates (‰) of 1.22, 0.87 and 0.80, respectively. Yemen, France and Italy were the top three countries with the cumulative fatality rates (%) of 28.42, 14.33 and 13.94, respectively. By August 15, the top five n Rn t (95%n CI) were New Zealand 6.63 (4.57, 9.08), Botswana 2.43 (2.16, 2.71) and Myanmar 2.20 (1.64, 2.51).n Conclusions:By August 15, COVID-19 was leveling off in most countries around the world. Some countries experienced the recurrence of epidemics. This should be vigilant and timely prevention and control measures would be necessary.