病毒很可怕，而比病毒更可怕的是因为不了解而产生的恐慌、歧视，和因不重视导致的贻误战机。

新型肺炎肆虐之际，我们将从人类与冠状病毒几次正面交锋出发，围绕传染病流行的三个要素：传染源，传播途径和易感人群，聊聊冠状病毒的前世今生......

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