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
2024-06-08
12
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/3625788.html
相关试题推荐
Largeanimalsthatinhabitthedeserthaveevolvedanumberofadaptationsf
Largeanimalsthatinhabitthedeserthaveevolvedanumberofadaptationsf
Largeanimalsthatinhabitthedeserthaveevolvedanumberofadaptationsf
Largeanimalsthatinhabitthedeserthaveevolvedanumberofadaptationsf
Largeanimalsthatinhabitthedeserthaveevolvedanumberofadaptationsf
Largeanimalsthatinhabitthedeserthaveevolvedanumberofadaptationsf
Largeanimalsthatinhabitthedeserthaveevolvedanumberofadaptationsf
Largeanimalsthatinhabitthedeserthaveevolvedanumberofadaptationsf
Largeanimalsthatinhabitthedeserthaveevolvedanumberofadaptationsf
Thestudyofanimalsinparksandinwildhasgivenadeeperknowledgeofth
随机试题
(1)Inthetownthereweretwomutes,andtheywerealwaystogether.Earlyeve
数字化对出版设计环节的影响不包括( )。A.数字化促使出版产品与服务形态呈现多
Windows系统中,在“运行”对话框中键入(),可出现下图所示界面。 A
有关不良习惯与牙周病的关系,哪项是错误的()A.磨牙症可引起食物嵌塞
女,42岁,间歇性上腹疼痛10年,疼痛多为餐前,进食后可缓解。体查:腹平软,剑下
红外热像仪的校准使用的是黑体炉。()
评价无领导小组讨论时,考官应该着重评估被评价者()的表现。A.在团队工作中与他
理想根管充填剂的基本要求之一是A:持久的抗菌作用 B:不具X线阻射性 C:有
(2020年真题)本月因货币当局的国外资产增加10亿元,国外负债增加2亿,则储备
(2017年真题)对于生产多种产品的企业而言,如果能够将固定成本在各种产品之间进
最新回复
(
0
)