美國(guó)疾病控制與預(yù)防中心(U.S. Centers for Disease Control and Prevention)于11月11日在其跟蹤的新冠變異毒株名單中增加了第16種變異毒株——BN.1。
截至11月12日,這種最新被發(fā)現(xiàn)的病毒株預(yù)計(jì)占美國(guó)感染人數(shù)的4%以上,成為美國(guó)第六種最常見的變異毒株。它的排名甚至高于BA.4.6。BA.4.6是奧密克戎亞變異毒株BA.4的后代,今年夏季成為全球流行的主要病毒株。
對(duì)于新冠疫情今年秋季的新成員,我們了解哪些信息?
據(jù)cov-lineages.org的數(shù)據(jù)顯示,BN.1也是一種奧密克戎變異毒株,其全稱為B.1.1.529.2.75.5.5.1。cov-lineages.org是由英國(guó)和澳大利亞的高校的捐贈(zèng)者運(yùn)營(yíng)的新冠數(shù)據(jù)集。這種新變異毒株也是“隱形奧密克戎”BA.2的后代。BA.2是今年春季和夏季的主要病毒株,在實(shí)驗(yàn)室開展的新冠檢測(cè)中,BA.2會(huì)呈現(xiàn)令人迷惑的結(jié)果,因而為世人所知。
在眾多的新奧密克戎變異毒株里,BN.1的表現(xiàn),尤其是在眾多人口中的表現(xiàn),仍然是一個(gè)未知數(shù)。但位于瑞士的巴塞爾大學(xué)(University of Basel)的計(jì)算機(jī)生物學(xué)家科尼利厄斯·勒默爾最近寫道,BN.1有極高的潛力能夠逃脫之前感染和接種疫苗所產(chǎn)生的免疫力。印度的研究人員上周在《Cureus醫(yī)學(xué)雜志》(Cureus Journal of Medical Science)上發(fā)表的一篇期刊文章顯示,這種變異毒株可以與其他正在傳播的同系列變異毒株競(jìng)爭(zhēng)。
covid-lineages.org的數(shù)據(jù)顯示,到目前為止,今年7月末最先發(fā)現(xiàn)的BN.1病例,主要集中在美國(guó)、英國(guó)、奧地利、澳大利亞和印度。在全世界已經(jīng)發(fā)現(xiàn)的近4,000例感染者中,每個(gè)國(guó)家各占約15%。
雖然許多人最近才知道BN.1,但它實(shí)際上已經(jīng)繁殖出9種第二代和第三代變異毒株,大部分最早于今年8月和9月被發(fā)現(xiàn)。所有變異毒株均在歐洲國(guó)家被發(fā)現(xiàn),包括奧地利、英國(guó)、丹麥、德國(guó)和愛爾蘭等。新加坡、韓國(guó)、日本以及印度和以色列等亞洲國(guó)家也發(fā)現(xiàn)了一些變異毒株。
截至11月14日,美國(guó)除住院病例以外的新冠感染病例小幅增加,死亡病例的趨勢(shì)小幅下降。美國(guó)新冠確診病例接近1億,專家表示由于檢測(cè)和報(bào)告頻率下降,這個(gè)數(shù)字可能被嚴(yán)重低估,美國(guó)死亡人數(shù)已經(jīng)超過100萬。(財(cái)富中文網(wǎng))
翻譯:劉進(jìn)龍
審校:汪皓
美國(guó)疾病控制與預(yù)防中心(U.S. Centers for Disease Control and Prevention)于11月11日在其跟蹤的新冠變異毒株名單中增加了第16種變異毒株——BN.1。
截至11月12日,這種最新被發(fā)現(xiàn)的病毒株預(yù)計(jì)占美國(guó)感染人數(shù)的4%以上,成為美國(guó)第六種最常見的變異毒株。它的排名甚至高于BA.4.6。BA.4.6是奧密克戎亞變異毒株BA.4的后代,今年夏季成為全球流行的主要病毒株。
對(duì)于新冠疫情今年秋季的新成員,我們了解哪些信息?
據(jù)cov-lineages.org的數(shù)據(jù)顯示,BN.1也是一種奧密克戎變異毒株,其全稱為B.1.1.529.2.75.5.5.1。cov-lineages.org是由英國(guó)和澳大利亞的高校的捐贈(zèng)者運(yùn)營(yíng)的新冠數(shù)據(jù)集。這種新變異毒株也是“隱形奧密克戎”BA.2的后代。BA.2是今年春季和夏季的主要病毒株,在實(shí)驗(yàn)室開展的新冠檢測(cè)中,BA.2會(huì)呈現(xiàn)令人迷惑的結(jié)果,因而為世人所知。
在眾多的新奧密克戎變異毒株里,BN.1的表現(xiàn),尤其是在眾多人口中的表現(xiàn),仍然是一個(gè)未知數(shù)。但位于瑞士的巴塞爾大學(xué)(University of Basel)的計(jì)算機(jī)生物學(xué)家科尼利厄斯·勒默爾最近寫道,BN.1有極高的潛力能夠逃脫之前感染和接種疫苗所產(chǎn)生的免疫力。印度的研究人員上周在《Cureus醫(yī)學(xué)雜志》(Cureus Journal of Medical Science)上發(fā)表的一篇期刊文章顯示,這種變異毒株可以與其他正在傳播的同系列變異毒株競(jìng)爭(zhēng)。
covid-lineages.org的數(shù)據(jù)顯示,到目前為止,今年7月末最先發(fā)現(xiàn)的BN.1病例,主要集中在美國(guó)、英國(guó)、奧地利、澳大利亞和印度。在全世界已經(jīng)發(fā)現(xiàn)的近4,000例感染者中,每個(gè)國(guó)家各占約15%。
雖然許多人最近才知道BN.1,但它實(shí)際上已經(jīng)繁殖出9種第二代和第三代變異毒株,大部分最早于今年8月和9月被發(fā)現(xiàn)。所有變異毒株均在歐洲國(guó)家被發(fā)現(xiàn),包括奧地利、英國(guó)、丹麥、德國(guó)和愛爾蘭等。新加坡、韓國(guó)、日本以及印度和以色列等亞洲國(guó)家也發(fā)現(xiàn)了一些變異毒株。
截至11月14日,美國(guó)除住院病例以外的新冠感染病例小幅增加,死亡病例的趨勢(shì)小幅下降。美國(guó)新冠確診病例接近1億,專家表示由于檢測(cè)和報(bào)告頻率下降,這個(gè)數(shù)字可能被嚴(yán)重低估,美國(guó)死亡人數(shù)已經(jīng)超過100萬。(財(cái)富中文網(wǎng))
翻譯:劉進(jìn)龍
審校:汪皓
The U.S. Centers for Disease Control and Prevention on November 11 added a 16th variant to the list of those it’s tracking—BN.1.
The newly singled-out strain was estimated to comprise just over 4% of U.S. infections through November 12, making it the sixth most common variant in the country. It came in just above BA.4.6, a descendant of Omicron spawn BA.4, which was prominent globally this summer.
Just what do we know about one of the newer additions to COVID’s autumn “alphabet soup”?
BN.1, also a strain of Omicron, is a shorter name for B.1.1.529.2.75.5.5.1, according to cov-lineages.org, a collection of COVID data run by contributors at universities in the U.K. and Australia. The new variant is also a descendant of “stealth Omicron” BA.2, which became famous for producing confusing results on lab-based COVID tests when it was prominent this spring and summer.
As with so many new Omicron variants, just how the strain might present itself—especially in a large population—is unknown. But BN.1 has a high potential for escaping immunity from previous infection and vaccination, Cornelius Roemer, a computational biologist at the University of Basel in Switzerland, recently wrote. And the variant has the ability to compete with other circulating lineages, according to a journal article published last week in?Cureus Journal of Medical Science from researchers in India.
So far, the largest concentrations of BN.1, first identified in late July, have been found in the U.S., the U.K., Austria, Australia, and India, according to covid-lineages.org. Each country is home to about 15% of the nearly 4,000 identified cases throughout the world.
Although new on the radars of many, BN.1 has already spawned nine known child and grandchild variants, most of which were first identified in August and September. All have been identified in European countries like Austria, the U.K., Denmark, Germany, and Ireland. Some have been identified in Asian countries like Singapore, South Korea, and Japan, as well as in India and Israel.
U.S. cases of COVID, in addition to hospitalizations, were ticking slightly upward as of November 14, and deaths were trending slightly downward. The U.S. is nearing 100 million documented cases of COVID, a number experts say is likely a vast underestimate due to the decreased frequency in testing and reporting, and has seen more than 1 million deaths.