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
The Flu Virus Can not Be Foreseen There is a joke among flu researchers: " If you’ve seen one flu season, you’ve seen. . . o
The Flu Virus Can not Be Foreseen There is a joke among flu researchers: " If you’ve seen one flu season, you’ve seen. . . o
admin
2013-07-08
40
问题
The Flu Virus Can not Be Foreseen
There is a joke among flu researchers: " If you’ve seen one flu season, you’ve seen. . . one flu season." For those not up on epidemiological humor: the joke is wry commentary on the unpredictable nature of the flu virus. Every year it looks different,and every strain follows its own types. This is not just a coincidence that frustrates scientists-it’s the reason new strains like H1N1 are impossible to anticipate and fully prepare for.
" I know less about influenza today than I did 10 years ago," quips Dr. Michael Oster-holm, director of the Minnesota Center of Excellence for Influenza Research and Surveillance and a former adviser to the U. S. Department of Health and Human Services. "Every stone we’ve turned over,we get more questions than we do answers."
The flu returns every season and the world periodically experiences catastrophic pandemics, but epidemiologists still do not understand why some strains evolve to infect people and others do not;they are not entirely sure about how the flu is transmitted; nor do they understand why some patients become fatally ill while others develop minimal symptoms. As a result, when a new strain shows up—like H1N1—they often have little information to fall back on,and the lessons of previous pandemics are only somewhat helpful. While epidemiologists are still putting together a complete picture of H1N1, for example, its most striking difference with the seasonal flu is that the elderly are not the most vulnerable population. And when H1N1 does cause serious illness, patients develop different complications that are more difficult to treat than those with seasonal flu. "It’s a very different death," says Osterholm.
The Centers for Disease Control currently maintains six different categories of flu-surveillance programs,but has rolled out new measures this year in order to monitor H1N1 ’s most worrying features. The backbone of its routine surveillance systems is not designed to count individual flu cases, but rather to get general indicators of how widespread the flu is and which strains are in circulation. " Influenza’s chimerical nature makes it a moving target for researchers," says Dr. Allison Aiello, assistant professor of epidemiology at the University of Michigan. " Even if we had complete seasonal flu data from the past, it wouldn’t necessary be helpful for a new strain of influenza," she explains.
Which of the following statements is TRUE according to the passage?
选项
A、Scientists have already known the reason why some strains infect people.
B、Now scientists know nothing about the transmission of flu virus.
C、People become fatally ill once they are infected by flu.
D、The previous information about flu provides limited help for scientists.
答案
D
解析
事实细节题。第3段第1句话中作者提到:...the lessons of previous pandemics areonly somewhat helpful.说明以前的流行性疾病所提供的经验仅仅有一点帮助,也就是说其作用是有限的。
转载请注明原文地址:https://kaotiyun.com/show/yzO4777K
0
考研英语一
相关试题推荐
TheauthorcitestheexampleofMrs.PrycetoshowthatTheauthor’sattitudetowardsthecurrentstateofchildhoodcancer
TryingtogetAmericanstoeatahealthydietisafrustratingbusinesscanbeeasilyprovedbythefactthatThephrase"caved
WhichofthefollowingreflectsthechangeofCatholicChurch?NoreenWelteseemstosuggestthatsomepeople
Instudyingboththerecurrenceofspecialhabitsorideasinseveraldistricts,andtheirprevalencewithineachdistrict,ther
ToliveintheUnitedStatestodayistogainanappreciationforDahrendorfsassertionthatsocialchangeexistseverywhere.Te
(46)TelevisionhastransformedpoliticsintheUnitedStatesbychangingthewayinwhichinformationisdistributed,byalterin
Whichofthefollowingdoesnotbelongtomaterialculture?Whichofthefollowingisnotanadvantageofprintedmusic?
-Howdidyouplayinthematch?-Well,ourteamwasaheadby2tozeroduringthefirsthalf,butwe______inthelasttenminu
Childrenmaybe______experience,butIthinktheyarequicktolearn.
Whethertoteachyoungchildrenasecondlanguageisdisputedamongteachers,researchersandpushyparents.Ontheonehand,ac
随机试题
5个月的婴儿,生长发育良好,足月平产,母乳喂养,一直按照预防接种程序进行接种,那么他现在还有哪项疫苗没接种过
食管腐蚀伤狭窄期常发生在外伤后1~2周。()
肾盂肿瘤的主要诊断依据是
急性化脓性骨髓炎的好发部位是
瑞氏染液属于什么类型染料
下列药物中药典规定用旋光法测定含量的是
A.安全隐患B.药品召回C.责令召回D.主动召回药品生产企业,包括进口药品的境外制药厂商,按照规定程序收回已上市销售存在安全隐患的药品是()。
下列选项中,属于按成本项目进行成本分析的内容有()。
北京时间2011年3月11日下午1点46分,日本近海发生9级地震,地震引发海啸,并引发核电站爆炸造成大量人员伤亡。加上之前的智利、海地及中国汶川大地震,地震的频繁发生让民众产生恐慌情绪。有人谣传食用碘盐可预防核辐射,海水被放射性物质污染而没法再提炼盐,广东
以下关于TCP/IP传输层协议的描述中,错误的是________。
最新回复
(
0
)