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由国家卫健委高级别专家组组长锺南山领衔撰写的《中国2019年新型冠状病毒感染的临床特征》周日（9日）在网上发表，该篇论文回顾了来自全中国31省市区、共1099宗病例，推断新型冠状病毒的潜伏期最长可达24天，且不排除有俗称“毒王”的超级传播者存在。

论文指出，研究的病例中有43.95%为武汉当地居民，其余均为外地人，后者当中有26%未在近期前往武汉或曾接触患者，仅1.18%患者与野生动物有过直接接触。上述情况印证最近的媒体报道，如家族聚集性发病、无症状感染者传播、3阶段暴发模式等出现。

在临床特征方面，入院时接受肺部CT检查的840名患者中，有76.4%表现为肺炎，其中82.1%出现淋巴细胞减少，36.2%血小板减少，而严重病例会有白细胞减少症、淋巴细胞减少症、血小板减少症、C反应性升高蛋白水平等。

锺南山等人在论文中表示，和之前在期刊《刺针》（The Lancet，大陆译《柳叶刀》）上发表的两项研究相比，基于更大的样本量和在全国各地招募的病例，最新研究得出的病死率明显变低，只有1.4%。当计入广东的试点数据时，病死率更低至0.88%，原因是广东采取了有效的预防措施。

锺南山指，目前最关键的是确诊病例增加的比率，若是比率持续下降，那就表明疫情形势出现好转。