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
2021-10-14
121
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 numbers 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, distinctlineages 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.
According to Paragraph 1, which of the following about the genome sequence can be inferred?
选项
A、It was only shared to scientists.
B、With it, the origin of COVID-19 can be traced.
C、It cannot be applied to prevent the second wave of COVID-19.
D、It was shared through a virtual method.
答案
D
解析
推断题。根据题干提示可定位至第一段。选项[A]和[D]对应第一段第二句“Since the first whole-genome sequence of the new coronavirus,SARS-CoV-2,was shared online on 11 January”,即“自从新的冠状病毒SARS-CoV-2的首个全基因组序列于1月11日在网上共享以来”,可以得知,全基因组序列不是只被分享给了科学家,因此选项[A]错误;全基因组序列是在网上共享的,[D]选项中virtual method是对原文中shared online的同义替换,故为正确答案。第一段并没有提及如何追溯此次疫情的源头,只提到了“trace the origin of COVID-19 outbreaks in their countries”,即“追踪各国新冠肺炎疫情的起源”,选项[B]属于张冠李戴,排除。选项[C]与原文表述相反,也排除,第一段第一句提到“researchers are prepared to use genome sequencing to avoid an expected second wave of COVID-19 infections”。即“研究人员准备利用基因组测序来避免预计到来的第二波新冠肺炎疫情感染”。
转载请注明原文地址:https://kaotiyun.com/show/eRY4777K
0
考研英语二
相关试题推荐
Excitement,fatigue,andanxietycanallbedetectedfromsomeone’sblinks,accordingtopsychologistJohnStern(21)Washington
Excitement,fatigue,andanxietycanallbedetectedfromsomeone’sblinks,accordingtopsychologistJohnStern(21)Washington
Excitement,fatigue,andanxietycanallbedetectedfromsomeone’sblinks,accordingtopsychologistJohnStern(21)Washington
TheUnitedStateshashistoricallyhadhigherratesofmarriagethanthoseofotherindustrializedcountries.Thecurrentannual
Homeworkhasneverbeenterriblypopularwithstudentsandevenmanyparents,butinrecentyearsithasbeenparticularlyscorn
Theroleofgovernmentsinenvironmentalmanagementisdifficultbutinescapable.Sometimes,thestatetriestomanagetheresou
Thesmoothlandingofshuttle(航天飞机)Discoveryendedaflightthatwassuccessfulinalmosteveryrespectbutone:thedislodging
Supposeyouhadbeenadmittedbyafamousuniversityforpostgraduateeducation.Yourfriend,Jack,wrotealettertocongratula
Duringtheday,Leipzig’sairportisquiet.Itisatnightthattheairfieldcomestolife.Nexttotherunwayayellowwarehous
随机试题
IgA、IgD和IgE之所以不能与Clq结合,是因为A.分子结构简单B.VH无补体结合点C.VL无补体结合点D.Fab段结构与补体相差甚远E.Fc段无补体结合点
糖皮质激素诱发和加重感染的主要原因是
口腔保健咨询时,对于第一恒磨牙窝沟封闭的适宜时间,正确回答是
A.卫生计生部门B.发展和改革宏观调控部门C.工业和信息化管理部门D.海关负责监测和管理药品宏观经济的部门是()。
班级管理过程包括制定计划、组织实施、________三个基本环节。
简述金币本位制下的黄金输送、铸币平价和汇率决定。
下面是一个栈类的模板,其中push函数将元素i压入栈顶,pop函数弹出栈顶元素。栈初始为空,top值为0,栈顶元素在stack[top-1]中,在下面画线处填上适当语句,完成栈类模板的定义。template<classT>class
Thebizarreanticsofsleepwalkershavepuzzledpolice,perplexedscientists,andfascinatedwritersforcenturies.Thereisan
TheMonaLisaisshowingherage,museumcurators(馆长)inParissaidwhileannouncingascientificstudyofthe500-year-oldmas
A、Shecan’tfindthesuitableskis.B、Shedoesn’tknowhowtoski.C、Sheisafraidofthewhitesnow.D、Shefeelsherfeetarev
最新回复
(
0
)