[新聞] 澳洲報導:劍橋研究人員發現三種病毒株

看板Gossiping作者ProfAsk (問教授)時間5年前 (2020/04/11 07:16)推噓3(8推 5噓 21→)

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※新聞內容含有政治人物、政府機關類、政治族群類請以[政治]為分類，違者刪除! 1.媒體來源: ※ 例如蘋果日報、自由時報（請參考版規下方的核准媒體名單）澳洲新聞網(news.com.au) 2.記者署名 ※ 沒有在這打上記者署名的新聞會被水桶14天編輯非記者 ※ 外電至少要有來源或編輯如:法新社 Victoria Craw 3.完整新聞標題: ※ 標題沒有完整寫出來 ---> 依照板規刪除文章 Coronavirus Australia: Three different strains of virus identified by Cambridge University researchers 澳大利亞冠狀病毒：劍橋大學研究人員鑑定出的三種不同病毒株 4.完整新聞內文: ※ 社論特稿都不能貼！違者刪除（政治類水桶3個月)，貼廣告也會被刪除喔！可詳看版規 Researchers have found three distinct strains of COVID-19, with two of them popping up in Australia including one closest to the “root of the outbreak”. April 11, 20206:23am Australians diagnosed with coronavirus could be suffering from one of two different strains of the disease, one of which is a “daughter” to the original strain found in China, new research has found. A study by Cambridge University researchers mapping the “evolutionary path” of the virus as it spread from Wuhan, China found three distinct strains in different parts of the globe. They have been dubbed A, B and C by researchers, based on a study of 160 genomes taken from patients between 24 December and 4 March in a process known as “phylogenetic network analysis” which essentially maps the family tree of COVID-19. Variant A is the “original human virus genome” and is closest to the “root of the outbreak”, researchers believe. It was found in Wuhan and is most similar to the type of virus found in bats. COVID-19 is believed to have originated in horseshoe bats and transferred to humans via an intermediary animal such as a pangolin. The epicentre is thought to be a Wuhan seafood market. Surprisingly however, researchers found the A variant was not Wuhan’s dominant virus type. Instead, mutated versions of A were found in Americans that lived in Wuhan and A-type viruses were also found in patients in Australia and the US. Type B is derived from A and separated by two mutations. This was the main type found in Wuhan city and across East Asia. However it has not been found much beyond East Asia, suggesting a “founder event” in Wuhan or some form of resistance to the strain outside of Asia. Instead, a third virus strain known as C – which is the “daughter” of B – has been found across Europe and is also present in Sydney, according to the virus tree. It is the major variant found in early patients in France, Italy, Spain and the UK. It was absent from China’s sample but also found in Singapore, Hong Kong and South Korea. More than 1.5 million people have been infected with COVID-19 around the world and nearly 100,000 have died. The study, published in the Proceedings of the National Academy of Sciences, is yet to be peer-reviewed, however it suggests the first spread of the disease among humans occurred between mid-September and early December. Chinese authorities reported the first case on 31 December. Dr Peter Forster, lead author from the University of Cambridge, said while there are too many mutations of the disease to precisely trace a COVID-19 family tree, the algorithm shows “plausible trees simultaneously.” “These techniques are mostly known for mapping the movements of prehistoric human populations through DNA. We think this is one of the first times they have been used to trace the infection routes of a coronavirus like COVID-19,” he said. Researchers also believe the information could be used to map the source of outbreaks and where they might occur in future. It could even lead to differences in the clinical presentation of the disease and be used to design treatments and vaccines, the team said. Dr Forster said: “The viral network we have detailed is a snapshot of the early stages of an epidemic, before the evolutionary paths of COVID-19 become obscured by vast numbers of mutations. It’s like catching an incipient supernova in the act.” 5.完整新聞連結 (或短網址): ※ 當新聞連結過長時，需提供短網址方便網友點擊 https://reurl.cc/z8Nxee https://www.news.com.au/world/coronavirus/australia/coronavirus-australia-three-different-strains-of-virus-identified-by-cambridge-university-researchers/news-story/e6fbac027ba79eecb95e83aa1df80517 pdf連結 https://www.pnas.org/content/pnas/early/2020/04/07/2004999117.full.pdf 6.備註: ※ 一個人一天只能張貼一則新聞，被刪或自刪也算額度內，超貼者水桶，請注意有趣的新聞劍橋大學遺傳學家 Peter Forster 利用DNA尋找人類起源的技術透過160個病例畫出的病毒進化樹發現武漢病毒目前大致有3型。研究人員相信病毒起源於武漢 A型最古老反而在武漢較少去年9-12月開始傳播武漢最多的是從A型進化的B型但令人驚訝的是研究人員在居住在武漢的美國人中發現了A的突變形式在澳大利亞和美國的患者中也發現了A型病毒東亞國家傳的主要是B型歐洲傳的主要是從B型進化的C型在中國的樣本中沒有在香港、新加坡、韓國樣本中有如果是假新聞、大外宣也仿真得太厲害了.... -- ※ 發信站: 批踢踢實業坊(ptt.cc), 來自: 123.194.189.235 (臺灣) ※ 文章網址: https://www.ptt.cc/bbs/Gossiping/M.1586560600.A.CC1.html *[1;31m噓 *[33mdrkkimo*[m*[33m: 這篇昨天貼過了想甩鍋病毒來自美國的怎麼有人一? *[1;31m噓 *[33mJuiFu617*[m*[33m: 到底要貼幾次 *[1;37m推 *[33mpatiger*[m*[33m: 其實就不外乎是外宣的一環 *[1;31m噓 *[33ma27588679*[m*[33m: 你有何居心？ *[1;37m推 *[33mfulongb210f*[m*[33m: 病毒不就是來自中國嗎？跟風就對了 *[1;37m推 *[33margine1978*[m*[33m: 中文摘要是否故意漏這一句：A型病毒在武漢發現? *[1;31m→ *[33margine1978*[m*[33m: 接近蝙蝠病毒者？加上去了 *[1;31m噓 *[33mbadbadook*[m*[33m: 好屌 *[1;37m推 *[33mheci1941*[m*[33m: 某樓在說什麼啊? 這可是"牛津大學"的研究耶。你給 *[1;31m→ *[33mheci1941*[m*[33m: 是大陸的外宣?? 我的錯，第一時間寫錯了 *[1;31m→ *[33myoshilin*[m*[33m: 所以變異的比較厲害

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