首页
登录
职称英语
Rabies is an ordinarily infectious disease of the central nervous system, cau
Rabies is an ordinarily infectious disease of the central nervous system, cau
游客
2025-01-05
23
管理
问题
Rabies is an ordinarily infectious disease of the central nervous system, caused by a virus and, as a rule, spread chiefly by domestic dogs and wild flesh-eating animals. Man and all warm-blooded animals are susceptible to rabies. The people of ancient Egypt, Greece and Rome ascribed rabies to evil spirits because ordinarily gently and friendly animals suddenly became vicious and violent without evident cause and, after a period of maniacal behaviour, became paralysed and died.
Experiments carried out in Europe in the early nineteenth century of injecting saliva from a rabid dog into a normal dog proved that the disease was infectious. Preventive steps, such as the destruction of stray dogs, were taken and by 1826 the disease was permanently eliminated in Norway, Sweden and Denmark. Though urban centres on the continent of Europe were cleared several times during the nineteenth century, they soon became reinfected since rabies was uncontrolled among wild animals.
During the early stages of the disease, a rabid animal is most dangerous because it appears normal and friendly, but it will bite at the slightest provocation. The virus is present in the sailvary glands(腺) and passes into the saliva so that the bite of the infected animal introduces the virus into a fresh wound. If no action is taken, the virus may become established in the central nervous system and finally attack the brain. The incubation(潜伏期) period varies from ten days to eight months or more, and the disease develops more quickly the nearer to the brain the wound is. Most infected dogs become restless, nervous, and irritable and vicious, then depressed and paralysed. With this type of rabies, the dog’s death is inevitable and usually occurs within three to five days after the onset of the symptoms.
Anti-rabies vaccine(疫苗) is widely used nowadays in two ways. Dogs may be given three-year protection against the disease by one powerful injection, while persons who have been bitten by rabid animals are given a course of daily injections over a week or ten days. The mortality rate from all types of bites from rabid animals has dropped from 9% to 0.5%. In rare cases, the vaccine will not prevent rabies in human beings because the virus produces the disease before the person’s body has time to build up enough resistance. Because of this, immediate vaccination is essential for anyone bitten by an animal observed acting strangely and the animal should be captured circumspectly, and examined professionally or destroyed. [br] Rabies is______.
选项
A、a disease which is infectious, caused by virus of dogs and wild flesh-eating animals
B、a disease caused by evil spirits
C、a disease spread by man and all warm-blooded animals
D、a disease causes animals to be vicious and violent
答案
A
解析
文章第一句可得出答案。
转载请注明原文地址:https://tihaiku.com/zcyy/3899953.html
相关试题推荐
Ourtheoriesabouthumandiseasearetheproductofcurrentfashion【M1】__
Ourtheoriesabouthumandiseasearetheproductofcurrentfashion【M1】__
Ourtheoriesabouthumandiseasearetheproductofcurrentfashion【M1】__
Ourtheoriesabouthumandiseasearetheproductofcurrentfashion【M1】__
Ourtheoriesabouthumandiseasearetheproductofcurrentfashion【M1】__
Ourtheoriesabouthumandiseasearetheproductofcurrentfashion【M1】__
______isthecentralconcerntoBlake’sconcernintheSongofInnocenceandSo
Whatisnottheelementindefininglanguage?A、Systemic.B、Arbitrary.C、Symbol.
TheAmericanTaxSystemGovernmentsraiserevenuesthroughtax
TheAmericanTaxSystemGovernmentsraiserevenuesthroughtax
随机试题
Advanceinfoodpreservationgaveconsumersindevelopedcountriesaccessto____
Ahealthydietis______formaintaininggoodoverallhealth.A、essentialB、potenti
Thespeakerlikesteachingbecauseof______.[br][originaltext]Ihavetoteach
[originaltext](1)Whenadoglosesaleg.theanimaleventuallyfiguresout
该省2010年社会消费品零售总额是()。 A.11959.6亿
A.根治性前列腺切除术 B.辅助性放疗 C.延期治疗 D.内分泌治疗 E
房地产经纪机构采用电话访问开发房源的优点是( )。A.业主印象深刻 B.花费
共用题干 TransportandTrade1.Transportis
Lb4A3135阻抗继电器中接入第三相电压,是为了()。(A)防止保护安装
当被催眠者被告知自己是聋子后,再问他们能否听见催眠者说话时,他们回答“听不到”。
最新回复
(
0
)