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
19
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
ErnestHemingwayunderwent20gruellingroundsofelectroconvulsivetherapy(
Whatarethetwostudentstalkingabout?[br][originaltext]W:Mmm.Thisisyum
外窗台有悬挑窗台和不悬挑窗台两种,挑窗台底部边缘处抹灰应做宽度和深度均不小于()
隧道洞门形式主要有()。A.端墙式 B.连拱式 C.遮光式 D.明洞
下列关于预制梁板施工说法正确的是()。A:先张法施工的张拉台座应釆用重力式混凝
龋病流行病学调查中,将龋病损害划分为A.四度 B.五度 C.三度 D.六度
应执行接触隔离的疾病是A:中毒性菌痢 B:急性重型肝炎 C:百日咳 D:流
简述想象在幼儿心理发展中的作用表现在哪些方面。
劳动定额法属于()绩效考评方法。A:品质导向型 B:结果导向型 C:行为导向
下列不属于反映工程项目特征有关资料的是( )。A.关于工程建设报建程序的有关规
最新回复
(
0
)