The COVID-19, caused by a novel coronavirus, was declared as a global pandemic by WHO more than five months ago, and we are still experiencing a state of global emergency. More than 74.30 million confirmed cases of the COVID-19 have been reported globally so far, with an average fatality rate of almost 3.0%. Seven different types of coronaviruses had been detected from humans; three of them have resulted in severe outbreaks, i.e., MERS-CoV, SARS-CoV, and SARS-CoV-2. Phylogenetic analysis of the genomes suggests that the possible occurrence of recombination between SARS-like-CoVs from pangolin and bat might have led to the origin of SARS-CoV-2 and the COVID-19 outbreak.

中文翻译：

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新型冠状病毒病（COVID-19）大流行：最近的小型回顾


由新型冠状病毒引起的新型冠状病毒肺炎（COVID-19）在五个多月前被世界卫生组织宣布为全球大流行病，目前我们仍处于全球紧急状态。迄今为止，全球已报告超过 7430 万例 COVID-19 确诊病例，平均死亡率接近 3.0%。从人类身上检测到了七种不同类型的冠状病毒；其中三种病毒导致了严重的疫情暴发，即MERS-CoV、SARS-CoV和SARS-CoV-2。基因组的系统发育分析表明，穿山甲和蝙蝠的 SARS 样冠状病毒之间可能发生重组，这可能导致了 SARS-CoV-2 的起源和 COVID-19 的爆发。