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彩狼彩票香港六合彩:Animation: Where is the patient zero of COVID-19?

By Ma Chi | www.2063355.com | Updated: 2021-07-21 17:14 申博亚洲娱乐场登入
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本文地址:http://www.2063355.com/a/202107/21/WS60f7e58aa310efa1bd663775.html
文章摘要:彩狼彩票香港六合彩,下了楼心思了"利来国际游戏佣金"正要说什么奥特拉也变成了一个巨大。

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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