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美國(guó)科學(xué)家日前進(jìn)行的一項(xiàng)關(guān)于新冠病毒最新研究顯示，“武漢不是該病毒的源頭”。研究稱，這種導(dǎo)致全球大流行的病毒并非來(lái)自實(shí)驗(yàn)室，而是自然產(chǎn)生的。這種病毒的較弱版本可能已經(jīng)在人群中傳播了數(shù)年，甚至幾十年。

近日，美國(guó)杜蘭大學(xué)醫(yī)學(xué)院教授羅伯特·加里接受美國(guó)廣播公司新聞網(wǎng)（ABC News）的采訪時(shí)表示：新冠病毒并非源于武漢海鮮市場(chǎng)。

In a recent interview with ABC news, Dr. Robert Garry, a professor at the Tulane University School of Medicine, once again pointed out that it's a misconception to believe the virus originated at a seafood market in Wuhan, China.



他認(rèn)為目前陰謀論在網(wǎng)絡(luò)上風(fēng)行，非常有必要利用整個(gè)團(tuán)隊(duì)的力量來(lái)探究這種新型冠狀病毒的起源。

"There’s a lot of speculation and conspiracy theories that went to a pretty high level," Dr. Robert Garry told ABC News, "so we felt it was important to get a team together to examine evidence of this new coronavirus to determine what we could about the origin."

abc News網(wǎng)站：“抱歉，陰謀論者。研究表明，新冠肺炎‘不是實(shí)驗(yàn)室構(gòu)建的’”
 

“我們的分析以及其他的分析都指向了比那更早的起源。那里肯定有一些病例，但不是新冠病毒的源頭。”

"Our analyses, and others too, point to an earlier origin than that," Garry said. "There were definitely cases there, but that wasn't the origin of the virus."


圖源：央視網(wǎng)視頻截圖

采訪中，羅伯特·加里提到了科學(xué)雜志《自然醫(yī)學(xué)》上發(fā)表的一篇研究論文，加里正是作者之一。



研究人員發(fā)現(xiàn)，新冠病毒并不具有“之前使用的病毒主干結(jié)構(gòu)”，因此并非人類創(chuàng)造，可能是一種在蝙蝠體內(nèi)發(fā)現(xiàn)的病毒和另一種穿山甲攜帶的病毒結(jié)合發(fā)展而成。

Researchers concluded that the novel coronavirus is not a human creation because it does not share any "previously used virus backbone." It likely arose, the study said, from a recombination of a virus found in bats and another virus, possibly originating from pangolins.

新冠病毒與在蝙蝠中發(fā)現(xiàn)的冠狀病毒有96％的類似性，正是4%的變異解釋了為何它有如此高的傳染性。

COVID-19 is 96% identical to a coronavirus found in bats, researchers said, but with a certain variation that could explain what has made it so infectious.


圖源：CGTN視頻截圖

加里稱，表面蛋白的突變可能是觸發(fā)這次大流行的原因，但是在積累到目前情況之前，這種病毒的較弱版本也可能已經(jīng)在人群中傳播了數(shù)年，甚至幾十年。

According to Garry, the pandemic may be triggered by the mutation in surface proteins of the virus. But it's also possible that a less severe version of the illness was circulating through the population for years, perhaps even decades, before escalating to this point.

研究稱，新冠病毒不是在實(shí)驗(yàn)室中構(gòu)建的，也不是有目的性的人為操控的病毒（not a laboratory construct or a purposefully manipulated virus）。

美國(guó)國(guó)家衛(wèi)生研究院所長(zhǎng)弗朗西斯·柯林斯也支持這篇文章的論點(diǎn)，他在個(gè)人博客上稱，這項(xiàng)研究證明新冠病毒來(lái)源于大自然，信服力很高。

Dr. Francis Collins, the director of the National Institutes of Health, supported the study’s findings, writing on his blog, "This study leaves little room to refute a natural origin for COVID-19."


 
據(jù)央視網(wǎng)報(bào)道，對(duì)于新冠肺炎病毒的來(lái)源，柯林斯提出了兩種構(gòu)想：

第一種構(gòu)想是，隨著新的冠狀病毒在其天然宿主（可能是蝙蝠或穿山甲）中不斷進(jìn)化，其刺突蛋白也隨之發(fā)生突變，以此來(lái)結(jié)合與人體中與ACE2蛋白結(jié)構(gòu)相似的分子并感染人體細(xì)胞。

According to Dr. Francis Collins, in the first scenario, as the new coronavirus evolved in its natural hosts, possibly bats or pangolins, its spike proteins mutated to bind to molecules similar in structure to the human protein, thereby enabling it to infect human cells. 

第二種情況是，這種新型冠狀病毒在獲得能夠引發(fā)人類疾病的能力之前，就已經(jīng)從動(dòng)物進(jìn)入到人類。經(jīng)過(guò)自然進(jìn)化之后，它們最終獲得了在人與人之間傳播的能力，并可以導(dǎo)致嚴(yán)重疾病。

The second scenario is that the new coronavirus crossed from animals into humans before it became capable of causing human disease. Then, as a result of natural evolution, the virus eventually gained the ability to spread human-to-human and cause diseases.

綜合來(lái)源：央視網(wǎng)，央視新聞，CGTN，abc News