截至2020年5月31日24时，31个省、自治区、直辖市和新疆生产建设兵团累计报告确诊病例83017例，累计治愈出院病例78307例，累计死亡病例4634例，治愈率94.3%，病亡率5.6%（见图1、2、3、4）。回顾前一阶段中国抗疫历程，大体分为五个阶段。

As of 24:00 of May 31, 2020, a cumulative total of 83,017 confirmed cases had been reported on the Chinese mainland, 78,307 infected had been cured and discharged from hospital, and 4,634 people had died. This demonstrates a cure rate of 94.3 percent and a fatality rate of 5.6 percent (see charts 1, 2, 3 and 4).

Note: On February 12, newly confirmed cases reached 15,152 (including 13,332 cumulative clinically diagnosed cases in Hubei).

Chart 1. Daily Figure for Newly Confirmed Cases on the Chinese Mainland

Chart 2. Daily Figure for New Fatalities on the Chinese Mainland

Chart 3. Cumulative Total of Outstanding Cases on the Chinese Mainland

Chart 4. Daily Figure for Cured Cases on the Chinese Mainland

China’s fight against the epidemic can be divided into five stages.

（一）第一阶段：迅即应对突发疫情

　　（2019年12月27日至2020年1月19日）

　　湖北省武汉市监测发现不明原因肺炎病例，中国第一时间报告疫情，迅速采取行动，开展病因学和流行病学调查，阻断疫情蔓延。及时主动向世界卫生组织以及美国等国家通报疫情信息，向世界公布新型冠状病毒基因组序列。武汉地区出现局部社区传播和聚集性病例，其他地区开始出现武汉关联确诊病例，中国全面展开疫情防控。

Stage I: Swift Response to the Public Health Emergency

(December 27, 2019-January 19, 2020)

As soon as cases of pneumonia of unknown cause were identified in Wuhan City, Hubei Province, China acted immediately to conduct etiological and epidemiological investigations and to stop the spread of the disease, and promptly reported the situation. In a timely manner, China informed the WHO and other countries, including the US, of the developing situation, and released the genome sequence of the novel coronavirus. After community spread and clusters of cases emerged in Wuhan, and confirmed cases were reported in other Chinese regions, which were due to virus carriers traveling from the city, a nationwide program of epidemic prevention and control was launched.

　　（1）2019年12月27日，湖北省中西医结合医院向武汉市江汉区疾控中心报告不明原因肺炎病例。武汉市组织专家从病情、治疗转归、流行病学调查、实验室初步检测等方面情况分析，认为上述病例系病毒性肺炎。

　　（2）12月30日，武汉市卫生健康委向辖区医疗机构发布《关于做好不明原因肺炎救治工作的紧急通知》。国家卫生健康委获悉有关信息后立即组织研究，迅速开展行动。

(1)December 27, 2019: Hubei Provincial Hospital of Integrated Chinese and Western Medicine reported cases of pneumonia of unknown cause to the Wuhan Jianghan Center for Disease Prevention and Control. The Wuhan city government arranged for experts to look into these cases through an analysis of the patients’ condition and clinical outcome, the findings of epidemiological investigations, and preliminary laboratory testing results. The conclusion was that they were cases of a viral pneumonia.

(2)December 30: The Wuhan City Health Commission (WCHC)issued Urgent Notice on Treatment of Patients with Pneumonia of Unknown Cause. Upon learning of developments, the National Health Commission (NHC) acted immediately to organize research into the disease.