首页
外语
计算机
考研
公务员
职业资格
财经
工程
司法
医学
专升本
自考
实用职业技能
登录
考研
As many countries emerge from lockdowns, researchers are prepared to use genome sequencing to avoid an expected second wave of C
As many countries emerge from lockdowns, researchers are prepared to use genome sequencing to avoid an expected second wave of C
admin
2022-03-27
52
问题
As many countries emerge from lockdowns, researchers are prepared to use genome sequencing to avoid an expected second wave of COVID-19 infections. Since the first whole-genome sequence of the new coronavirus, SARS-CoV-2, was shared online on 11 January, scientists have sequenced and shared some 32,000 viral genomes from around the world. Such a vast amount of data has allowed researchers to trace the origin of COVID-19 outbreaks in their countries and pinpoint when community transmission occurred.
Now, countries that have successfully suppressed infections are entering the next phase of the COVID-19 pandemic—where there’s a risk of new cases appearing as social restrictions ease. Researchers say that genomics will be crucial to quickly track and control these outbreaks. Studies already show that outbreaks tend to be shorter and smaller when genomics is used to help contact tracing. "When there are few cases, genomics can very quickly tell you what you’re dealing with and therefore guide precision interventions," says Gytis Dudas, a consulting bioinformatician at the Gothenburg Global Biodiversity Centre in Sweden.
Several places are particularly well placed to do that because they invested in genome sequencing early in the pandemic and have a relatively small number of cases. Researchers in New Zealand, and at least one state in Australia decided that they would aim to sequence most coronavirus genomes in their country or state. As SARS-CoV-2 spread around the world, distinct lineages began to form as viruses circulating in different regions gradually evolved. By comparing sequences, researchers can quickly rule out possible lines of transmission if two sequences don’t match, or link together cases that do.
Scientists in the United Kingdom, the United States and other countries are also sequencing SARS-CoV-2 from a large proportion of cases there, but because their epidemics are still ongoing and case numbers are high, genomics is being used to monitor spread and help identify the source of some cases where contact tracing fails. But such interventions depend on broad sampling, and so in places where diagnostic testing is limited, there will also be gaps in the genomic data.
But the use of genomic analysis to help contact tracing is largely restricted to high-income countries, says Meru Sheel, an epidemiologist at the Australian National University in Canberra. She would like to see genomics considered as a tool for outbreak responses in resource-limited countries in the Asia-Pacific region, as it was in the Democratic Republic of the Congo, Sierra Leone and Guinea during the Ebola outbreak.
The situations in the United Kingdom and the United States are mentioned to________.
选项
A、show that interventions require considerable sample data
B、demonstrate the importance of the genome sequence
C、introduce the transmission routes of cases
D、ask for resource support for researches
答案
B
解析
例证题。根据题干关键词the United Kingdom the United States可定位至第四段第一句。该句前半句对英国、美国和其他国家的情况作了介绍:Scientists in the United Kingdom,the United States and other countries are also sequencing SARS-CoV-2 from a large proportion of cases there. 后半句表达转折:“but because their epidemics are still ongoing and case numbers are high. genomics is being used to monitor spread and help identify the source of some cases where contact tracing fails”. 即“但因为疫情仍在持续,且病例数量极多,基因组学也正被用于监测传播,并在追踪失败的情况下帮助确认一些病例的接触源头”。因此,提到这些国家是为了说明基因组学在各国的应用,展现了基因组序列的重要性,故B项正确。A、C、D项都不符合上下文,故排除。
转载请注明原文地址:https://kaotiyun.com/show/Rhi4777K
0
考研英语二
相关试题推荐
ThewriterwarnsAmericansthat______.Thewritergivestheexampleofbreadtoshowthat______.
WholesalepricesinJulyrosemoresharplythanexpectedandatafasterratethanconsumerprices,【1】thatbusinesseswerestill
WholesalepricesinJulyrosemoresharplythanexpectedandatafasterratethanconsumerprices,【1】thatbusinesseswerestill
WholesalepricesinJulyrosemoresharplythanexpectedandatafasterratethanconsumerprices,【1】thatbusinesseswerestill
WholesalepricesinJulyrosemoresharplythanexpectedandatafasterratethanconsumerprices,【1】thatbusinesseswerestill
Workingatnonstandardtimes—evenings,nights,orweekends—istakingitstollonAmericanfamilies.One-fifthofallemployedAm
In1999,thepriceofoilhoveredaround$16abarrel.By2008,ithad【1】the$100abarrelmark.Thereasonsforthesurge【2】fro
In1999,thepriceofoilhoveredaround$16abarrel.By2008,ithad【1】the$100abarrelmark.Thereasonsforthesurge【2】fro
Shouldaleaderstrivetobelovedorfeared?Thisquestion,famouslyposedbyMachiavelli,liesattheheartofJosephNye’sne
Shouldaleaderstrivetobelovedorfeared?Thisquestion,famouslyposedbyMachiavelli,liesattheheartofJosephNye’sne
随机试题
与雄激素关系密切的肿瘤是
下列有关《明大诰》说法正确的组合是?()①《明大诰》是一本关于刑事方面的法规;②《明大诰》比《大明律》法律效力略低,主要是惩治不法官吏方面的效力;③《大明律》中处以笞、杖形的罪行,在《明大诰》中可以处以极刑;④朱元璋亲自编订《明大诰》,但
【2019年真题】某仓储公司拟建六座油罐。其中,5000m3钢制拱顶油罐3座,分别是航空煤油罐1座,0号柴油罐2座,油罐附件有呼吸阀和阻火器;5000m3钢制内浮顶油罐1座,存储90号汽油;3000m3钢制内浮顶油罐2座,分别存储93号汽油、97号汽
下列关于消防应急标志灯具和消防应急照明灯具的调试,说法正确的是()。
甲企业是一家大型机床制造企业,2016年12月:1H与乙公司签订了一项不可撤销销售合同,约定于2017年4月1日以300万元的价格向乙公司销售大型机床一台,若不能按期交货,甲企业需按照总价款的10%支付违约金。至2016年12月31日,甲企业尚未开始生产该
根据专利法律制度的规定,下列各项中,属于专利权终止的情形有()。
下列有关文学常识的表述,不正确的一项是()
联合行文标注发文机关时,标在前面的机关是()。
公权的属性,决定了它必须严守________,既不可缺位,更不可越位,这早已是法治社会基本的常识。公权的______,看似损害的是部分人的利益,实则在一个权力运行缺乏章法的社会,任何人都可能成为受害者。填入划横线部分最恰当的一项是:
(The)GreatWallis(soa)well-known(touristattraction)that(millions)ofpeoplepourineveryyear.
最新回复
(
0
)