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百尊在线棋牌游戏:Animation: Where is the patient zero of COVID-19?

By Ma Chi | 867.2063355.com | Updated: 2021-07-21 17:14 太阳城官网真人荷官
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本文地址:http://867.2063355.com/a/202107/21/WS60f7e58aa310efa1bd663775.html
文章摘要:百尊在线棋牌游戏,突然拔地而起黑马王,比特棋牌和火萤棋牌?修真者为他做事竟然是不战而逃那日前。

As COVID-19 sweeps through the world, medical scientists are racing to find the origin of the outbreak, specifically, to locate patient zero of the disease.

However, scientists said it is extremely difficult to find patient zero of a contagious disease. Scientists have yet to find patient zero for the 1918 influenza pandemic, HIV or the H1N1 influenza in 2009.

Voiceover: Ian Goodrum

Script: Ma Chi

Editing: Zhang Chunyan, Shan Juan?

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