时间:2019-01-04 作者:英语课 分类:2006年VOA标准英语(一月)


英语课

By Stephanie Ho
Washington
01 January 2006

U.S. health officials acknowledge they do not know if the H5N1 flu virus that has led to the deaths of millions of poultry 1 in Asia and has recently been found in Europe, may well mutate into a version that would spark a worldwide pandemic among humans. They emphasize that being prepared is the best defense 2.

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US researchers in Wisconsin test the body of a dead wild bird for H5N1 virus  
  

The reason health authorities are so worried about the H5N1 virus is because it is relatively 3 lethal 4. About 70 people have died from the flu, or about half of the more than 140 confirmed human cases.

The head of the U.S. Centers for Disease Control and Prevention Julie Gerberding told the CBS television program Face the Nation, Washington wants to be ready for the worst. "We very concerned about the H5N1 influenza 5 that is in Asia and Eastern Europe right now," she said. "We have no idea whether it will become transmissible from person to another, efficiently 6. But we have got to take the steps now to get prepared for that."

These steps include a multi-billion dollar federal plan to vaccinate 7 Americans, acquire anti-viral drugs and develop new vaccines 9.

Health and Human Services Secretary Mike Leavitt told CNN's Late Edition that wild birds continue to spread the virus around the world. "That means that, ultimately, it would find its way to the United States. We need to be prepared," he said. "We also need to be prepared to see a continued stream of people who are infected by contact with those birds."

He emphasized that humans infected with avian flu usually get it from coming into close and prolonged contact with raw poultry, not cooked poultry. He said U.S. authorities are concerned about the current H5N1 virus because it has similar genetic 10 characteristics to the virus that killed millions of people worldwide in 1918. "And what we do know is that the virus continues to mutate, and it will ultimately reach some form that either will burn out, or that some new virus, which is already out there generating, will begin to mutate," he said. "We do not know if it will be this avian H5N1 virus. What we do know is that history tells us, they have happened in the past, they will happen in the future, and we are not prepared. We need to be."

Secretary Leavitt said he is confident U.S. scientists can develop an effective vaccine 8. The challenge, he added, will be making enough of it, for all Americans, quickly enough. "We have a vaccine that we know produces a sufficient immune response," he said, "but when the actual virus makes that skip or makes that transition into a human to human transmission, it will be a different virus. It will be a cousin to this one. But we know we can make a vaccine. What we do not have is the capacity to replicate 11 it fast enough so that every American could have one."

Secretary Leavitt said U.S. officials hope to be able to eventually provide each American with what he described as a "tailor-made" vaccine, within six months of any pandemic virus outbreak.



n.家禽,禽肉
  • There is not much poultry in the shops. 商店里禽肉不太多。
  • What do you feed the poultry on? 你们用什么饲料喂养家禽?
n.防御,保卫;[pl.]防务工事;辩护,答辩
  • The accused has the right to defense.被告人有权获得辩护。
  • The war has impacted the area with military and defense workers.战争使那个地区挤满了军队和防御工程人员。
adv.比较...地,相对地
  • The rabbit is a relatively recent introduction in Australia.兔子是相对较新引入澳大利亚的物种。
  • The operation was relatively painless.手术相对来说不痛。
adj.致死的;毁灭性的
  • A hammer can be a lethal weapon.铁锤可以是致命的武器。
  • She took a lethal amount of poison and died.她服了致命剂量的毒药死了。
n.流行性感冒,流感
  • They took steps to prevent the spread of influenza.他们采取措施
  • Influenza is an infectious disease.流感是一种传染病。
adv.高效率地,有能力地
  • The worker oils the machine to operate it more efficiently.工人给机器上油以使机器运转更有效。
  • Local authorities have to learn to allocate resources efficiently.地方政府必须学会有效地分配资源。
vt.给…接种疫苗;种牛痘
  • Local health officials then can plan the best times to vaccinate people.这样,当地的卫生官员就可以安排最佳时间给人们接种疫苗。
  • Doctors vaccinate us so that we do not catch smallpox.医生给我们打预防针使我们不会得天花。
n.牛痘苗,疫苗;adj.牛痘的,疫苗的
  • The polio vaccine has saved millions of lives.脊髓灰质炎疫苗挽救了数以百万计的生命。
  • She takes a vaccine against influenza every fall.她每年秋季接种流感疫苗。
疫苗,痘苗( vaccine的名词复数 )
  • His team are at the forefront of scientific research into vaccines. 他的小组处于疫苗科研的最前沿。
  • The vaccines were kept cool in refrigerators. 疫苗放在冰箱中冷藏。
adj.遗传的,遗传学的
  • It's very difficult to treat genetic diseases.遗传性疾病治疗起来很困难。
  • Each daughter cell can receive a full complement of the genetic information.每个子细胞可以收到遗传信息的一个完全补偿物。
v.折叠,复制,模写;n.同样的样品;adj.转折的
  • The DNA of chromatin must replicate before cell division.染色质DNA在细胞分裂之前必须复制。
  • It is also easy to replicate,as the next subsection explains.就像下一个小节详细说明的那样,它还可以被轻易的复制。
学英语单词
a. perinealis
accrued charge
acoustic magnetic mine
adlecting
administration of internal affairs
Aflogualnum
ai chi
alternative procedure
ampholite
art and part
artificial caving
assidue
base of petroleum
black cottonwood
blue-green bacterium
bursting speed
cascading down
centricdiatom
cloud-bases
complementary scale
consistorial
conventional-arms
counter-cast
Crista sacralis intermedia
Cynwyl Elfed
Daphne holosericea
departmental arrangement and distribution in commodity stock
Direct Copper Blue 2R
disinflations
drip channel
event oriented simulation
eye-serve
factorization method
facular
Fentathienil
flower
geomagnetic periodic variation
go yachting.
group demodulator filter
harpending
hepatitis sequestrans
information management program
initial overburden pressure
insulation varnish
intrapore
inverse beta process
journal box lid hinge
lanatest
light pressure separator
Lothair
megalodiscs
merry-go-round
monoethanolamine(surfactant)
moving current-weighted Passche indexes
neutralizing water tank
new staff
Nihon-maru
non-specified-time relay
nuclear quadrupole spectrum
oil pressure switch
one-cancels-the-other order
orbit maneuver engine
output transfer function
Pare's suture
plain shank
plant hole
poikilosmotic character
preregeneration
progressive wave
pushback
put somebody up to
RCITR
reducing capacity
reductive alkylation
regional index call warrant
RFRNA
Rhodiola wallichiana
Richardson's ground squirrel
rosette phyllotaxy
semi-tractor
sexlessnesses
sgd.
shell tuck
sickling diathesis
simple deterministic language
spaces out
spantik
spread back
sugarcane top
system of gravitational unit
tea-tree
telephone bills
tiled mode
use test
vendibler
vertical decomposition
voltage and frequency response
wear plate
Y ligament
Yang Shiying
zori