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] Without treatment, the virus in an infected animal will______.
选项
A、enter immediately to the brain
B、develop immediately to the wound
C、incubate for l0 days to 8 months
D、pass into a fresh wound
答案
C
解析
第三段讲了,如果不采取行动的话,病毒会侵入中枢神经系统,最后侵害大脑,潜伏期一般为10天至8个月。所以选C。
转载请注明原文地址:https://tihaiku.com/zcyy/3899956.html
相关试题推荐
Ourtheoriesabouthumandiseasearetheproductofcurrentfashion【M1】__
Ourtheoriesabouthumandiseasearetheproductofcurrentfashion【M1】__
Ourtheoriesabouthumandiseasearetheproductofcurrentfashion【M1】__
Ourtheoriesabouthumandiseasearetheproductofcurrentfashion【M1】__
Ourtheoriesabouthumandiseasearetheproductofcurrentfashion【M1】__
Ourtheoriesabouthumandiseasearetheproductofcurrentfashion【M1】__
Whatisnottheelementindefininglanguage?A、Systemic.B、Arbitrary.C、Symbol.
TheAmericanTaxSystemGovernmentsraiserevenuesthroughtax
TheAmericanTaxSystemGovernmentsraiserevenuesthroughtax
TheAmericanTaxSystemGovernmentsraiserevenuesthroughtax
随机试题
[originaltext]W:(5)Agoodresumepredictshowyoumightperforminthatdesire
TheLostArtofListeningA)"Whywon’theevenlistentomyidea?""Why
【教学过程】 (一)创设情境,导入新课 【多媒体展示】水壶使用前和多次使用后的照片。 提出问题:为什么经过一段时间使用后水壶中会有水垢呢?说明煮沸前
短周期元素中,最外层电子数是次外层电子数一半的元素有________和_____
可燃气体发生泄漏时,应及时查找泄漏源,杜绝一切火源,采取必要措施制止泄漏,利用(
患儿女,2岁。因发热、流涕2天,咳嗽、烦躁半天就诊。护士观察患儿咳嗽为犬吠样,伴
针对管理性组织和服务性组织,考评的重点主要集中在()等几个方面。A:整体素质
2008年5月12日,我国发生了震惊世界的四川汶川大地震。在这次抗震救灾中,全党
下列关于专项准备金的说法,不正确的是()。 A.专项准备金是根据贷款风险分类
某女性患者,因患左舌下腺囊肿于门诊行左舌下腺囊肿摘除术,术后第2天左下颌下区发生
最新回复
(
0
)