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
外语
Influenza should not be dismissed as a trivial disease. It kills thousands of people every year at a very high cost to the econo
Influenza should not be dismissed as a trivial disease. It kills thousands of people every year at a very high cost to the econo
admin
2012-10-23
69
问题
Influenza should not be dismissed as a trivial disease. It kills thousands of people every year at a very high cost to the economy, hits hardest the young and the elderly, and is most dangerous for people over the age of 65. Influenza is mainly a seasonal illness of the winter months, though in tropical and subtropical areas of Asia and the Pacific it can occur all the year round.
The damaging effects of influenza can be prevented by immunization, but constant changes of antigenic specificity of the virus necessitate a different composition of the vaccine (疫苗) from one year to another. The network of WHO surveillance activities to monitor the evaluation of influenza virus strains, and WHO hold an annual consultation at the end of February to recommend the composition of the vaccine for the forthcoming epidemiological season. These recommendations are published immediately in the weekly epidemiological record.
Vaccination each year against influenza is recommended for certain high-risk populations. In closed or semi-closed settings, maximum-benefit from immunization is likely to be achieved when more than three-quarters of the population are vaccinated so that the benefit of "herd immunity" can be exploited. Special care should be taken of the following groups:
—adults and children with chronic disorders of the pulmonary or cardiovascular systems requiring regular medical follow-up or who had been hospitalized during the previous year, including children with asthma;
—residents of nursing homes and other establishments for patients of any age with chronic medical conditions;
—all people over the age of 65.
Physicians, nurses, and other personel in primary and intensive care units, who are potentially capable of transmitting influenza to high risk persons, should be immunized; visiting nurses and volunteer workers providing home care to high-risk persons should also be included.
That a different component part of the vaccine is necessary is principally due to the variable change of ______.
选项
A、virus
B、strain
C、antigen
D、immunization
答案
C
解析
转载请注明原文地址:https://kaotiyun.com/show/Z99O777K
0
考博英语
相关试题推荐
Researchersdisagreewhetherthe"useitorloseit"philosophyholdsforcognitiveaging,butthereisoneevidencethatkeepin
NowillegalcopiesofmusicCDs______lossesofabout$300millioninsalesannuallyand$65millioninlostgovernmenttaxr
Letmereiteratemypoint.
TheNaturecommentarysaysscientistsworkingonagingnowhavetoA(takeintoaccountthe)prospectthatB("drug-relatedapproa
JohnandTonyarebothverylearned,butHarryisthe______one.
ThetradefairisdesignedtofacilitatefurthercooperationbetweenChineseautoindustriesandoverseasautoindustries.
【56】Astateuniversitypresidentwasarrestedtodayandchargedwithimpersonateapoliceofficerbecause,theauthoritiessay,
TheheadquartersofthistextilecompanyisinNewYorkwhileits20______companiesarelocatedindifferentpartsoftheworl
TheAleuts,residingonseveralislandsoftheAleutianChain,thePribilofislands,andtheAlaskanPeninsula,havepossesseda
Thisleadsrecordcompaniestotreatmusiciansascontractedartistswhoarenotpaidafixedsumfortheirlabor-time,butinst
随机试题
与宾客沟通时,下列行为中正确的是()。
议会君主制和二元君主制的区别集中体现于()
医师甲经执业医师注册,在某医疗机构执业。一年后,该医师改聘到另一预防机构执业。其改变执业地点和类别的行为
行政沟通的作用主要表现在()等方面。
以下属于位置平均数的是()。
高等教育心理学的重要作用是有助于____________、有助于提高教育教学质量、有助于进行教育教学改革。
A、B、C、D、E这5个小组开展扑克牌比赛,每两个小组之间都要比赛一场,到现在为止,A组已经比赛了4场,B组已经比赛了3场,C组已经比赛了2场,D组已经比赛l场。问E组比了几场?
Wecaninferfromthefirsttwoparagraphsthattheindustrialistsdisregardenvironmentalprotectionchieflybecause______.T
为了保障数据的存储和传输安全,需要对一些重要数据进行加密。由于对称密码算法(1),所以特别适合对大量的数据进行加密。国际数据加密算法IDEA的密钥长度是(2)位。(2)
Theresultofautomationmaywellbeanincreaseinemployment,sinceitisexpectedthatvastindustrieswillgrowuparoundma
最新回复
(
0
)