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Why A COVID-19 Vaccine That's Only 50% Effective Could Still Help Stop The Pandemic : Shots - Health News Scientists are racing to develop a vaccine that proves "safe and effective." It may not prevent infection in everyone who gets it, but it still could eventually stop the pandemic. Here's how.
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A COVID-19 Vaccine May Be Only 50% Effective. Is That Good Enough?

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A COVID-19 Vaccine May Be Only 50% Effective. Is That Good Enough?

A COVID-19 Vaccine May Be Only 50% Effective. Is That Good Enough?

A COVID-19 Vaccine May Be Only 50% Effective. Is That Good Enough?

  • Download
  • <iframe src="https://www.npr.org/player/embed/911987987/912612344" width="100%" height="290" frameborder="0" scrolling="no" title="NPR embedded audio player">
  • Transcript
Jesse Zhang for NPR
As we get closer to a COVID-19 vaccine, it's exciting to imagine a day when the virus is gone. But a vaccine will not be a magic bullet. In fact, it may be only about 50% effective.
Jesse Zhang for NPR

File this under "great, yet stupid gift ideas." The BOx bottle opener claims to be the "world's first smart bottle opener" but it's not groundbreaking. This bottle opener sends a message to your friends via Messenger every time you open a bottle — crazy, right?
冲击奖项:如果这届奥斯卡最佳影片的提名数有9或10部电影的话,那么《逃出绝命镇》能占一个。乔登皮尔的剧本应该一定会被提名。
All this is happening before our eyes and yet we act as if we have all the time we want and all the solutions. I'm only a child and I don't have all the solutions, but I want you to realise, neither do you! 所有这一切就发生在我们眼前,然而我们还是一直向大自然无度索取我们所需要的。我仅仅是个孩子,我不知道该怎么办。 但我们这些孩子——这个星球的未来需要让您认识到,您不能说没办法!

Dr. Anthony Fauci, chief of the National Institute of Health and Infectious Disease, has欧司朗两大分拆业务成“香馍馍” 木林森PK飞乐音响谁能得手? when discussing the importance of a vaccine. "We don't know yet what the efficacy might be. We don't know if it will be 50% or 60%," Fauci said during a Brown University event in August.

In this emotional comedic drama, a selfish car dealer named Charlie Babbitt learns that he has a brother after his estranged father dies. He is upset to learn that said brother, Raymond, received his father's $3 million estate despite living with severe autism that has left him in a mental institution. Charlie learns that Raymond is a savant with outstanding capabilities for mental math and takes advantage of this skill by using Raymond to count cards in Vegas.

The questions New Yorkers ask the column are dictated not only by their individual circumstances but also by the larger issues of the day, like rising housing costs, gentrification and shoddy construction. In the end, 2014 was a year of things going up — home prices, rents and, above all, buildings, with 16,700 units approved for construction through October, according to the Real Estate Board of New York.
amendment

专家:四环房价进入8万时代不客观 仍在4万左右

"When we talk 'vaccine effectiveness,' what we're talking about is, 'How effective was the vaccine at preventing actual disease?' " explains scientist L.J. Tan, chief strategist of the nonprofit Immunization Action Coalition.

节目36 歌曲《中国范儿》,玖月奇迹

We will continue to pursue a proactive fiscal policy and a prudent monetary policy.
China accounts for about 15 per cent of the world’s gold production, a higher proportion than Saudi Arabia has in the oil market. But since 2016 authorities have tightened their scrutiny on gold mining, which has led to the closure of smaller mines in the country.

"It's possible that the [COVID-19] vaccine will reduce the severity of disease" in the other 50% who do get sick, says physician Bill Miller of The Ohio State University College of Public Health. "It may mean that people are less likely to be hospitalized, require ICU care or die."

"That's certainly the case with the influenza vaccine," Miller adds. "People who get the vaccine may still get the flu, but, for the most part, their disease is milder than if they hadn't had the vaccine."

Michael Ison, an infectious disease physician at Northwestern University Feinberg School of Medicine, echoes that sentiment. While it's true that 50 out of 100 people who get the vaccine could still end up getting infected with the coronavirus, "hopefully, the majority will have milder disease," Ison says. But he cautions there's a lot to learn in that regard, given that the studies of COVID-19 vaccine candidates are still very much underway.

"We really need to get some information from the trials that are ongoing to best understand what the impact will be," he says. Ison is a member of the research team at Northwestern that is conducting studies on COVID-19 and on influenza vaccines.

3、美酒佳人。 邦德走到哪里喝到哪里,美酒的确能帮他俘获佳人。喜欢喝一杯的人最容易在第一次约会时就抱得美人归。
infection

In order to put this pandemic in the rearview mirror, a large percentage of the population needs to either be vaccinated or gain immunity via an infection with the virus (a much riskier route that would include many more deaths).

When a large portion of the population has immunity to the virus because of this sort of "herd immunity," it's unlikely to keep spreading. Even people who haven't been vaccinated (such as very young babies and those with compromised immune systems) are protected once this level of immunity in a population is achieved, because the illness has little opportunity to spread within the community — most people who run into the virus in this scenario are immune.

Foreign robot makers sold 103,191 robots to China in 2017, up 71.9% from a year earlier.
它会自然生长成模子的形状。

So — here's a little math — if 20% of the U.S. population ends up getting exposed to the virus and developing an infection before we have a vaccine (as is 美国创作型歌手泰勒·斯威夫特位列2015全球十大美女榜第七。她擅于创作有关个人经历的叙事性歌曲。她获奖颇丰,包括七项格莱美奖、16项全美音乐奖、11项美国年度乡村音乐奖、八项美国乡村音乐学院奖、34项公告牌音乐奖和一项全英音乐奖。她的作词,颇受纳什维尔词曲作家协会和作曲家名人堂的赞赏。截止2015年初,斯威夫特的专辑销量已超4000万,单曲下载量也逾1.3亿次,成为全球数字唱片销量最高的五位音乐人之一。 then we would still need an additional 40% of the population to gain protection via a vaccine.

And in order to get 40% of a population immune through vaccination — if you have a vaccine with 50% efficacy — "you're going to have to vaccinate 80% of the population," says Carlos del Rio, an infectious disease expert at Emory University. "So it's not going to happen right away."

A disturbing and often bleak analysis of the automated future of work has been named 2015’s business book of the year.
苹果越来越需要有人去抵挡和应对攻击者以及监管者(苹果在欧洲遭到税务调查),而库克对人、策略和执行——而不是产品——的重视终于开始看起来像个优势。

"It's going to take us months to get the entire population vaccinated if they are willing to get vaccinated," he says — which is another big "if." An NPR/PBS/Marist poll in August found that more than a third of Americans — 35% — say they won't get vaccinated when a vaccine comes available.

卓越雇主排名:63
It came as no surprise that the likes of Emily Ratajkowski, Adriana Lima, Lily Donaldson and Petra Nemcova turned out to be the red carpet rulers on day one of the 70th Cannes Film Festival.
Transforming and upgrading the real economy through innovation
Doing more to unleash the potential of domestic demand
Deepening reform in major sectors and key links

Companies do have black lists. It's not written down anywhere but it's a list of people they'd be happy to get rid of if the opportunity arises. If you feel invisible, if you're getting bad assignments, if your boss is ignoring you, or if they move your office, you're probably on it.
['institju:t]
The survey of 11,500 workers by Chinese employment agency Zhaopin found that 50.9 per cent did not get an annual bonus at the end of 2016. Another 9.6 per cent were told their bonus had been delayed until after the new year holiday.

《星球大战:侠盗一号》预计2016年12月16日上映。
本周一,研究小组表示,根据遗骨可以看出,理查三世患有严重的脊柱侧弯,或者说脊柱弯曲。这会让他十分痛苦,还会导致右肩比左肩高,但莎士比亚的《理查三世》中描述的枯萎的手臂却无从证实。
问:对于你的作品在西方广受欢迎一事,你是怎么看的?
克普克写道,分析师们常常“认为新兴市场危机易发性的根源在于制度薄弱,这使得这些国家易受经济、金融不稳定的影响。”

['traigl]
[r?b]

埃尔多安发表上述言论之际,距荷兰大选投票已不足24个小时——反伊斯兰候选人海尔特?维尔德斯(Geert Wilders)引发的围绕伊斯兰在荷兰社会中角色的热烈辩论,让本次大选变得格外有看头。维尔德斯的自由党(PVV)目前在民调中排名第二。
单词remembrance 联想记忆:
以下国家在“2017年最佳国家“整体排名中相当亮眼 。这份排名意在衡量全球最大经济体。
输家:尼克斯

[?'lju?]

Why do we need to test a proposed vaccine in so many people?

n. 能力,容量,容积; 资格,职位
第二场比赛将于10月8日在上海的梅赛德斯-奔驰文化中心举行。
Mr Li said the economy’s strength came as a result of the government shunning strong stimulus policies and its push for supply-side reforms.

US billionaires hold 540 spots on the list, more than any other country in the world. In second is China with 251 and German with 120.
championship
The hunt for his body began in earnest in 2012 when archaeologists working on historical accounts and geographical clues started to dig beneath the municipal carpark on the spot where Greyfriars was, and found the skeleton.
想知道2013年的最差工作是哪些吗?报社记者以其令人尴尬的特质,取代伐木工人成为今年的最差工作。
10.你真的很明显,好吧?
因此,39%的90后试图避免使用手机所带来的负面影响,措施包括关闭APP的消息提示功能、限制社交媒体互动频率、以及在某些情况下完全不使用社交媒体等等。
New year’s events can be anticlimactic. Not so in China where stock markets began 2016 with enough excitement to make traders choke on their bubbles: Shanghai stocks dropped 7 per cent on Monday, Shenzhen more than 8 per cent. It could have been worse. A new mechanism that suspends trading after a drop of 7 per cent halted play early — in this instance, by an hour and a half.

In 2002, Marc Cherry (the creator of Desperate Housewives) was watching the news with his mother in her home. The lead story on the news that day (and many days before) was the Andrea Yates trial. Andrea was on trial for drowning her five children in the bathtub. Marc turned to his mother and asked, "Could you imagine a woman being so desperate that she would murder her own children?"
塞舌尔
中国工商银行表示,在截至2015年12月31日的一年里,其净利润增长了0.5%,为上市以来的最小增幅。平均总资产回报率下降0.1个百分点,至1.3%。
勤勉尽责干事创业。

Rose Wang

Winners: Pelicans
在主要的美国航空公司中,全美航空公司拥有最高的假日航班准点率,在榜单上排名第五,去年感恩节和圣诞节期间的航班延误率为15.57%。与此同时,计划和全美航空公司合并的美国航空公司(American Airlines)排名倒数第四,FlightAware网站的数据显示,该公司航班延误率达到19.7%。
[.tr?nsp?'tein]
单词impresario 联想记忆:

"The average salary level of employees grew by about 6.3 percent year on year in the first three quarters of last year, while China's annual GDP growth stood at 6.7 percent in 2016, both slowing from a year earlier," Jin added.
The second-best song that Shirley Bassey performed for the James Bond franchise is still one of the best. For a series that, on some level, has always been about wish fulfillment, listening to one of the great singers belt powerful notes about avarice seems just about right. So say what you will about the film (it's not on many of the lists of James Bond's best), but Bassey had good material here and she knocked it out of the park.

Will the vaccine protect older people? And what if I'm heavy?

With age, the immune system often mounts a lesser response to vaccination; that's why, for example, adults 65 and older can opt for a high-dose flu shot — that's thought to help bolster their protection. And scientists also know from prior research that the flu vaccine is 遏制房价最强信号:全国9天8次调控 打破炒房美梦. Ison says it's too soon to know if obesity or age will be a factor in the immune response to the COVID-19 vaccine candidates now being considered for use.

In research results so far, he says, "the small, phase 1 data shows that you can generate antibody responses even in older adults, but it'll be these larger studies that will tell us [whether] we need to use higher doses or more doses of the vaccine in certain cases." Results from phase 3 trials of safety and effectiveness are expected in the coming months.