17 April 2021>: Clinical Research
Epidemiology of 631 Cases of COVID-19 Identified in Jiangsu Province Between January 1 and March 20 2020: Factors Associated with Disease Severity and Analysis of Zero MortalityHong Ji 1AE* , Qigang Dai 1AC* , Hui Jin 2C* , Ke Xu 1C , Jing Ai 1F , Xinyu Fang 3E , Naiyang Shi 2C , Haodi Huang 1D , Ying Wu 1B , Zhihang Peng 3B , Jianli Hu 1C , Liguo Zhu 1F , Changjun Bao 14A* , Ming Wu 15AG*
Med Sci Monit 2021; 27:e929986
Figure 1 (A) Epidemic curve of confirmed coronavirus disease 2019 (COVID-19) cases reported in Jiangsu Province, Eastern China, by February 14, 2020 (data from February 15 were not available because since February 14, there has been no report on new confirmed cases). First-generation infection was defined as those who had a history of travel and residence in Wuhan City and surrounding areas or other communities with reported cases. Second-generation infection was defined as those who had contact with people from Wuhan City and surrounding areas or other communities with reported cases. Third-generation infection was defined as those who had contacted a locally confirmed or probable COVID-19 case. Unclear were defined as cases that did not belong to the above 3 categories and whose exposure sources cannot be traced. (B) Rt (time-dependent reproductive number, Rt) in different epidemic stages in Jiangsu Province, Eastern China, by February 14, 2020. The darkened horizontal line indicates Rt=1, below which sustained transmission is unlikely as long as the anti-transmission measures are sustained, indicating that the outbreak is under control. The 95% confidence intervals (Cls) are presented as shaded values.