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The Logic Behind A 14-Day Quarantine After Travel Or COVID-19 Exposure : Shots - Health News What's behind the "14 days of self-quarantine" guidance after exposure to someone with COVID-19 or after travel from a place with a high number of cases? Think of yourself as a potential incubator.
NPR logo The Science Behind A 14-Day Quarantine After Possible COVID-19 Exposure

The Science Behind A 14-Day Quarantine After Possible COVID-19 Exposure

A sign on the M8 motorway last week in Glasgow, Scotland. Jeff J. Mitchell/Getty Images hide caption

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Jeff J. Mitchell/Getty Images

政策聚集绿色环保 新型建材前景巨大

Jeff J. Mitchell/Getty Images

To stop the spread of the coronavirus, health officials have a favorite refrain: After being in a city or region where there have been a lot of COVID-19 cases, spend 14 days in quarantine even if you feel perfectly fine — don't leave your house. Coming from New York? 14-day quarantine. Arriving in Hawaii? 14-day quarantine. Been in Italy or China or Iran recently? 14-day quarantine.

"That's a long-standing public health practice, and it's called 'traveler's quarantine,' " explains Lindsay Wiley, a professor at American University's Washington College of Law. "Fourteen days is not a made-up number here — it's based on what we know so far about COVID-19, and it's possible that over time we'll see that number change as we learn more [about the virus]."

The 14-day rule is widespread because public health agencies around the world work together on these guidelines. In the U.S., the 国务院:鼓励按常住人口规模健全婴幼儿照护服务及配套安全设施 the quarantine period, and its counterpart organizations do so abroad, all in concert with the World Health Organization.

The promotion of urbanization in central and western China has also attracted many members of the labor force from coastal cities in East China to inland regions, where the cost of living is much lower, Peng explained.
民主党能在中期选举中重新夺回美国众议院多数党地位吗?

单词affected 联想记忆:

Every great detective needs his or her definitive story. For Sherlock Holmes it was The Hound of the Baskervilles. For Agatha Christie’s fussy Belgian sleuth Hercule Poirot it’s Murder on the Orient Express – a tale in which a bloodthirsty villain kills a wealthy businessman during a train journey through the Balkans. Or are things really what they seem? Sidney Lumet made a beloved film out of the story in 1974, with a stunning cast that included Sean Connery, Ingrid Bergman and Albert Finney as Poirot. Now Kenneth Branagh is donning the Belgian’s moustache himself, as well as stepping behind the camera as director, in his glossy new big-screen version, starring Johnny Depp, Daisy Ridley, Michelle Pfeiffer, Penelope Cruz and Dame Judi Dench. Is there something new that can be mined from this story? Maybe. But even if not, Christie fans will surely want to climb aboard. Released November 3 in the UK, November 10 in the US, China and Turkey, and November 30 in China's Hong Kong and Singapore. (Credit: 20th Century Fox)
A Chinese Poet’s Unusual Path From Isolated Farm Life to Celebrity
adj. 暂时的,临时的
只有科比在32岁的时候参加了更多的比赛,而且他的场均出场时间还少了几分钟,而且这还仅包括常规赛。
1.保险精算师
对胎儿进行手术有可能改变他们的人生。
But economists generally expect the momentum of the recent past to resume and continue once storm distortions abate. The 45 economists who responded to The Wall Street Journal's latest monthly forecasting survey saw the jobless rate falling to 7.8% by next June and 7.5% by the end of 2013. Some say job growth could accelerate from its slow pace. 'I think businesses are going to have to hire,' said Bob Baur, an economist with Principal Global Investors.[qh]
10.谎言和誓言的区别在于,一个是听的人当真了,一个是说的人当真了。

"The incubation period varies from virus to virus and sometimes from host to host," says Rachel Graham, a virologist at the University of North Carolina's Gillings School of Global Public Health.

For the virus that causes COVID-19 — its official name is SARS-CoV-2 — researchers have found that the typical incubation period is about five days. About 97% of the people who get infected and develop symptoms will do so within 11 to 12 days, and about 99% will within 14 days.

Canadian border agents are handing people entering Canada a sheet from the Public Health Agency of Canada that instructs them to self-quarantine for 14 days and monitor themselves for any symptoms that might signal COVID-19. Selena Simmons-Duffin/NPR hide caption

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Selena Simmons-Duffin/NPR

The world's second-largest economy is catching up to traditional innovation front-runners, who were led again this year by Switzerland, Sweden, Britain and the United States, said the annual report by the U.N.'s World Intellectual Property Organization (WIPO), INSEAD Business School and Cornell University.
By turns breathtaking, hilarious and disturbing, Jonathan Glazer’s extraordinary, erotic film achieves a rare blend of fantasy and realism

交通银行首席经济学家连平表示,不断上涨的生产者物价可能会在较长的时间内推高消费价格。
If nothing else, it's clear that when it comes to the summer, the NBA season doesn't really ever stop. It just switches gears.
Beijing targets consumer prices inflation at 3.5 per cent, but weakening growth is keeping prices benign.
Thousands of supporters awaited Rossello’s arrival for the post-swearing-in inauguration ceremony at the island’s seaside Capitol building, clutching umbrellas to protect themselves from a searing sun.

Two weeks later, Mr. Bernheimer was among the dozens of long-established old master dealers attending the London evening sales. In the past, they would buy at these auctions to stock up for the Maastricht European Fine Art Fair in March in the Netherlands. But with sellers encouraging Sotheby’s and Christie’s to compete for their business with ever-higher valuations, and auctions now marketed to a shallow pool of wealthy buyers, there was conspicuously little trade bidding.
3. Grow your hair slightly longish, if it isn't naturally wavy (poor you), wear curlers to bed every night.
然而,克普克认为,美国利率在引发新兴市场危机方面的作用未被充分认识。他提供的证据表明,如果以下三种情况同时出现的话——处于美联储紧缩周期,联邦基金利率高于自然利率(导致实际产出趋近潜在产出的利率),以及美联储将比先前预期更快收紧政策的信号让市场参与者感到惊讶——新兴市场爆发危机的几率会大大增加。
《善地》
n. 元素,成分,组成部分,(复数)恶劣天气

An illustration created at the U.S. Centers for Disease Control and Prevention conveys a likeness of the coronavirus that's behind the current pandemic. CDC hide caption

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CDC

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去年,CPI指数上涨在一月时达到峰值2.5%,随后在剩下的时间里在2%以下波动。

CDC

n. 准学士学位获得
7月,中国政府首次尝试规范互联网金融,央行、银监会、证监会等10家机构联合发布指导意见,提出了“互联网金融”的官方定义,并明确了各机构负责监管的互联网金融机构类型。

然而,英国退欧运动和特朗普崛起中的煽动因素存在相似之处。
She’s No. 1: Chancellor Merkel has made the list eight times out of the past ten years — seven times as No. 1.
世界各国同意将地球升温控制在3.6华氏度以内,这需要在未来大约30年里,抑制温室气体排放,之后基本停止排放。科学家表示,如果在本世纪,排放量继续按照当前趋势发展,地球温度将比前工业化时代水平提高10华氏度,那将与人类文明当前的形式不再兼容。
“我认为随着社会变得更多元化,未来这个情况会在一定程度上得到改善。不过这需要一定的时间。”

Among the year’s biggest surprises was the plunge in gasoline pries. Economists differed on the economic impact—money in the pockets of consumers offset by declines in exploration and drilling activity—but everyone agreed that it was bearish for small cars and hybrids. The combination of cheap gas and a steep sticker price made the Cadillac ELR the runaway winner of the most disliked car of the year award. Only 155 of the Volt-based $80,000 cars found buyers in November.
If we ask "What salary are you looking for?" say you're flexible, or say it depends on the responsibilities of the job. Try not to name a salary unless we really push you, because that gives us a leg up in the negotiating.
v. 扩充,延伸,伸展,扩展
You've usually stated in pastinterviews that you have connections to your characters. In Aldnoah Zero, whichis currently airing, what do you think is your connection to Inaho?

这是自去年9月以来进口最大单月跌幅,也意味着中国进口已在过去15个月里连续同比收缩。
反对:可以把这部电影当作一部演技在线的影片,而不是一部真正伟大的作品吗?
每天向大家推送短小精悍的英语学习资料.
According to figures from Zhonggong Education, an institute that monitors the applicant numbers, more than 459,600 people applied to take the exam by the sixth day of this year's application window on Tuesday. Almost 103,000 of those had applied on Monday.
Staff numbers at insurance agencies also rose by 936,200 to a total of more than 5.6m people.

完成家庭作业,阅读指定的内容,以及其他的事。在网络上查找关于你的学习主题的内容,在图书馆看看书,再看看还可以学到哪些关于主题的内容。
The deal makes a millionaire of 17-year-old Mr D’Aloisio, who taught himself to write software aged 12 and will join Yahoo’s London office while he continues his studies at school.
报告还写道“这一增长进一步依靠视频编辑技术,在第三季度显著增长了19%,因为视频内容已经成为了大多数顾客为中心的网站的首要的吸引和号召行为。通过社交媒体的大量的视频营销也助涨了这一需求。”
Stripping out price, volumes of Chinese imports in October fell a more modest 2.6 per cent from a year earlier, according to estimates from Oxford Economics.
We will explore new forms of social governance.

The projects will also cover infrastructure programs such as new connections between Tongzhou and downtown Beijing, sewage and waste water disposal, and energy facilities. Cultural projects will be carried out to provide more employment opportunities, as the construction proceeds on a Universal Studios theme park and a training facility for the National Center for Performing Arts, Lu said.
影片大量借鉴了亚瑟·布雷默的事迹,此人于1972年枪击了总统候选人和隔离主义者乔治·华莱士。与电影中一样,布雷默枪击华莱士也是在被一个年轻女孩拒绝后不久。尽管如此,他的生活总的来说不如德尼罗的角色那么激动人心,他俩最大的共同点,就是都没有真的杀死目标。
That figure is more than two times the city's population of about 10 million.
这62所大学在该榜单中占比达到12.4%,上榜大学的数量仅次于美国,其占比为27.8%。

Recipient: Their Royal Highnesses The Duke and Duchess of Cambridge (joint winners)
我们要让权力不能任性,就得把那些不应该有的权力砍掉,有些涉及到部门利益,要压缩寻租的空间。这不是一个简单的过程,从中央政府一直到地方、到基层,要打通“最后一公里”。
日前一份行业报告显示,2016年中国网红预计创造收益高达580亿元,远超2015年中国电影440亿元的票房收入。
The world is casting its eye on Brazil for hosting two of the most coveted sporting events — the 2014 FIFA World Cup and the Summer Olympics two years after. Except for watching exciting games and cheering for your favorite team and players, you can also take a trip to “the lungs of the earth”, the Amazon forest, to escape the crowds and embrace nature. Either way, Brazil is sure to leave you with an unforgettable memory.
4.平均寿命
Fortunately for Honda, it benefits from a deep reservoir of customer goodwill and loyalty in the U.S., as well as a reputation for building high-quality vehicles that are rated highly by objective third parties for their low cost of ownership. The reservoir was drained somewhat by a product defect controversy resulting from airbag deployments that scattered shrapnel on its victims.

There are 15 Chinese brands in the top 100, one more than last year and a sharp rise on a decade ago, when China Mobile was the only Chinese brand.
According to China's business magazine New Fortune's 2018 Chinese wealthy list, the top 10 tycoons' total wealth reached 1.72 trillion yuan, accounting for 18% of the combined wealth of the list's total 500, and the top 10's personal wealth has surpassed 100 billion yuan for the first time.
这是第二枚被拍卖的诺贝尔和平奖奖牌,得主是第一个获得该奖项的拉美人——1936年诺贝尔和平奖奖牌被授予当年的阿根廷外长卡洛斯·萨维德·拉莫斯。

“在香港地区,房地产的基本面明显放慢下来,”他说,“我减持了一点儿,然后很快发生了全面调整,所以我等到反弹后,卖出了一部分。”
vt. 安慰,使
In the past five years, China's exports of goods grew at an annual average of 6.5 percent, with its share in the global market rising form 10.4 percent in 2010 to about 13.2 percent in 2015, faring much better than major global economies. Service trade grew over 13.6 percent each year, marking the world's second largest service trader.
两名美国人因研究医生与医院、学生与学校和人体器官与被移植者之间的有效匹配,昨天被授予诺贝尔经济学奖。
他赢得了名动词奖,而其姐妹奖,最佳动词名词化奖,则由另一位顾问凭借这句“全球联络”(global touch-base)摘得。