ObjectiveTo analyze the change trend of death cases of corona virus disease 2019(COVID-19) and its characteristics from the time of onset to death, and to provide a theoretical basis for effectively reducing the mortality of this disease.

MethodsThe data on number of new cases, death cases per day and 17 death cases in 31 provinces (autonomous regions, municipalities) issued by the National Health Commission, Health Commission of Hubei Province from January 10, 2019 to February 11, 2020 were collected and analyzed.

ResultsUp to 24:00 on February 11, 2020, the mortality of COVID-19 in China was 2.49%, including 3.19% in Hubei province and 0.4% in other provinces (autonomous regions, municipalities).The mortality of COVID-19 reached a peak point on January 15 (4.9% in China and in Hubei province), and then continued to decline to the low point on January 19 (2.02% in China and Hubei province).It reached another peak point from January 24 to 26 (2.85%-3.22% in China, 4.94%-5.35% in Hubei province, and in other provinces (autonomous regions, municipalities) reached a peak point of 0.44% on January 25).It began to decline continuously later, the mortality in China and Hubei province reached a low point on February 5 (2.01% and 2.79%, respectively), and in other provinces (autonomous regions, municipalities) reached the lowest point of 0.14% on February 4, then began to rise continuously from February 5.The time of onset to death in cases of male, ≥70 years old, no cough symptoms, shortness of breath or wheeze or dyspnea, no fatigue or general soreness was shorter.

ConclusionsThe mortality of COVID-19 may be on the rise.It is necessary to strengthen publicity of prevention and control knowledge, improve the awareness of early medical treatment, and shorten the time of consultation.