首页
登录
职称英语
Avian influenza (禽流感), or "bird flu", is an infectiousdisease of animals wa
Avian influenza (禽流感), or "bird flu", is an infectiousdisease of animals wa
游客
2023-09-13
29
管理
问题
Avian influenza (禽流感), or "bird flu", is an infectious
disease of animals was caused by viruses that normally infect 【S1】______
only birds and, less commonly, pigs. Avian influenza viruses are
highly species-specific, but have, on rare occasions, crossed the
species barrier to infecting humans. 【S2】______
In domestic poultry (家禽), infection with avian influenza
viruses cause two main forms of disease, distinguished by 【S3】______
low and high extremes of virulence (毒性). The so-called
"low pathogenic (病原的)" form commonly causes only mild
symptoms and may easily go undetected. The highly pathogenic
form is far more dramatic. It spreads very rapidly through
poultry flocks, causes disease affecting multiple external organs, 【S4】______
and has a mortality that can approach 100%, often within 48
hours.
Bird flu is not the same as SARS. Because their symptoms 【S5】______
are similar, SARS is caused by completely different viruses.
Influenza viruses also are more infectious and cannot be as
readily contained as SARS isolating people who have the 【S6】______
infection.
The current outbreak of bird flu is different from earlier
ones in that officials have been unable to contain its spread. An
outbreak in 1997 in Hong Kong was the first time the virus had
spread to people, but it was much more quickly contained. A
total of 18 people were hospitalized with six reporting deaths. 【S7】______
About 1.5 million chickens were killed by an effort to remove 【S8】______
the source of the virus.
Unlike the 1997 scare, this outbreak has spread more rapidly
to other countries, increasing its exposure on people in varied 【S9】______
locations and raised the likelihood that the strain will combine 【S10】______
with a human influenza virus. [br] 【S6】
选项
答案
SARS isolating → ∧ by
解析
转载请注明原文地址:https://tihaiku.com/zcyy/3009522.html
相关试题推荐
Whattopicisthepassagemainlyconcernedwith?[br]Theotherhigheranimalsf
[originaltext]Onewaythatscientistslearnaboutmanisbyanimals,sucha
[originaltext]Onewaythatscientistslearnaboutmanisbyanimals,sucha
[originaltext]Onewaythatscientistslearnaboutmanisbyanimals,sucha
Iftheearthgetshotterinthenewcentury,whatwillhappentoanimalsand
Iftheearthgetshotterinthenewcentury,whatwillhappentoanimalsand
Iftheearthgetshotterinthenewcentury,whatwillhappentoanimalsand
Iftheearthgetshotterinthenewcentury,whatwillhappentoanimalsand
Largeanimalsthatinhabitthedeserthaveevolvedanumberofadaptationsf
Largeanimalsthatinhabitthedeserthaveevolvedanumberofadaptationsf
随机试题
TheSkillsRequiredtoGetaJobI.Academicskills:ba
CordiaHarringtonwastiredofstandingupalldayandsmellinglikeFrench
Traditionally,universitieshavecarriedouttwomainactivities:researcha
()作为不动产登记的基础,是条例实施、薄册证统一和信息平台建设的重要支撑。
增强胃黏膜屏障功能的药物有___________、___________、___
发现胎儿脊柱裂的最佳孕周是A.10~14周 B.28~32周 C.24~26
女性,30岁,因高热、右侧胸膜性胸痛、咳嗽2天就诊。胸部X线检查示右侧中等量胸腔
各种运输方式内外部的各个方面的构成和联系,就是( )。 A.运输系统
“5S”活动是加强现场管理的方法,其核心是( )。A.安全 B.素养 C.
沪深300股指期货是中国金融期货交易所推出的第一份金融期货合约。推出以来,交易活
最新回复
(
0
)