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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

多地启动重大项目投资计划

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 海南违规填海项目已双暂停 涉及房产销售宣传暂停 the quarantine period, and its counterpart organizations do so abroad, all in concert with the World Health Organization.

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历史会这样回首2012年:这一年,中国“第五代”领导层亮相,同时中国经济转向较低速增长的轨道。这种转变发生的背景,将是一系列令人畏惧的国内挑战——不断增加的社会不安定,不断扩大的收入差距,以及生态和人为的灾难——加上不断升级的外部紧张,这源于美国重新转向亚洲,同时亚太邻国对中国的经济崛起越来越感到忧虑。

Best Car Brand: Mazda

今年最引人注目的化妆和发型设计几乎都源自角色的原型本身(其中有些无疑比银幕上的造型更有活力)。除了能让观众一眼看出角色的外貌特征,它们也能为演员的表演赋予整体感觉和微妙之感。有时,一个大鼻子就能加深观众的理解。
The memes included jokes about pedophilia, child abuse, sexual assault, and the Holocaust.
Overall twenty-eight thousand bombs and other munitions were exploded over Yugoslavia a country the size of Ohio. William Cohen then secretary of defense characterized Allied Force as “the most precise application of airpower in history.” Some five hundred civilians died in the bombing a remarkably low number for such a high number of munitions expended. In its own account of the campaignNATO stresses that targets were “carefully sexted” and that “massive effort was made to minimise the impact of the air campaign on the Serb civilian population.”
UK schools account for more than a third of all graduates from the top 50 pre-experience programmes and not only attracted nearly half of all female students but also almost half of all international students. Indeed, 94 per cent of students enrolled in a UK MiF pre-experience programme in 2014 were from overseas. About 85 per cent of these students were from outside the European Economic Area, including 55 per cent of the overall number from mainland China.
Analysts say headline import figures may start to improve in the coming months since commodity price falls were particularly pronounced at the end of 2014, which will mean smaller year-on-year falls in Chinese imports in value terms.
Many bosses hold their staff accountable, but the best show that they hold themselves accountable as well. This means adhering to the same guidelines they set for their employees and taking responsibility for both team successes and failures。
美国的实际GDP在7-9月份内比去年同期增长了3.9%,这是官方上个月发布的数据。
国际移民组织说,不到三万五千人,或者说大约百分之三的移民,是从土耳其经陆路进入希腊和保加利亚的。

"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

Hilcorp Energy
6. How to play guitar

最后的预言:疲软的经济增长将延续至2010年。在春天前,奥巴马的白宫都不得不扮演美国政治中心的角色,美国商业界也终于开始相信会出现温和复苏。
吉尔伯特表示,对可穿戴设备的不断试验十分重要,但是现在短期内,人们还需要探讨一下:“技术的演进以及企业的研发力量共同推动了现有可穿戴产品的发展,但它们是否真的能够满足用户的需求;各公司又是否需要探索不同的合作模式,让可穿戴设备不仅限于早期使用者的圈子,而是被主流人群所接受”。
Swyft works with 50 different messaging partners, including Kakao Talk, Facebook Messenger, BlackBerry Messenger, and Line. The partnerships give the 11-person company access to 2.5 billion registered users. As the strategies for monetizing messaging apps evolve, the young startup has carved out a way for brands to inject themselves into the conversation.
9. 米拉-库尼斯 1100万美元

每个句子后面有5个数字,选择最能反映你的感受的数字。
What dangers does the Fed present to EMs today? One of the biggest risks, says Mr Koepke, is that it might “get behind the curve” and delay raising rates for too long. This would result not only in a surprisingly big hike when it came, but also a higher terminal interest rate than would otherwise be the case.
Scientists have long investigated stem cells' potential for growing hearts, and they reached a major milestone this year when they created heart tissue than can beat on its own.
Tesla has an order backlog of $226 million. At the production run rate of 1000 cars a week expected at the end of 2014, that translates to a 30-week backlog.
雇主因种族、肤色、性别、国籍、宗教、年龄或残疾而歧视员工属于违法行为。但美国多数州至今依然不保护LGBT群体的工作权益。苹果公司CEO蒂姆库克希望消除这种差异。11月份,库克在《华尔街日报》(Wall Street Journal )评论版对页发表了题为《平等就业对企业有益》(Workplace Equality Is Good for Business)的文章,敦促联邦立法,以免就业者因性取向而受到歧视。

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

Since its first release in 1995, many new versions and sequels have been created. However, fans say none could replace the breath-taking and tragic tale of the original.
Other European cities have seen increases in costs, pushing them up the rankings. London rose five points, bringing it into the top 10.

CDC

5.Branding: 16.4 percent increase
Will China's stock market climb back to the 6,000-point mark it reached two years ago? The stock market was at its most bullish back then, but if you ask the same question now, some would cite a global economy still reeling from a recession.

目前还不清楚绑架者的身份以及他们的目的。
Will Indian Prime Minister Narendra Modi try any more unorthodox economic experiments
尽管辩论被认为是仅仅关于外交政策的,但国内关注从未远离表面,候选人抓住每一个机会围绕他们的竞选演说在经济和税收方面给予攻击。之后在旋转屋也是一样,两个竞选团队很快分配着辩论评论,同时转到摇摆州中的竞争状态分析。
凯投宏观(Capital Economics)首席亚洲经济学家马克?威廉姆斯(Mark Williams)补充道:“我们预计,2017年新兴市场出口的表现将继续改善,出口值会同比温和增长。”

《傲骨贤妻》(The Good Wife):艾丽西娅(Alicia)的秘密暧昧对象威尔(Will,乔希·查尔斯[Josh Charles]饰)在第五季末死去,CBS频道的这部性感法庭剧似乎要完蛋了,但是第六季却似乎充满了疯狂的能量——艾丽西娅初露头角的政治竞选、新旧公司的权力之争、合伙人卡里(Cary)的棘手法律事务。艾丽西娅不再那么完美,《傲骨贤妻》因此更好看了。
Wages will finally accelerate after years of stagnation
Apple Inc. CEO Steve Jobs introduces the iPad 2 on stage during an Apple event in San Francisco, California in this March 2, 2011,
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Additional reporting by Tom Hancock in Shanghai
7.Yes, John was with me last night. – Because that’s what friends do… we agree and ask questions later。
“这是真的“我必须去做这件事”的时刻了,”他说。
我知道,这是需要时间的,但是这会使你更加了解自己所做的事。这也会是你到学校学习的原因,对吧?
金维刚表示:“2016年居民消费价格指数仅同比上涨2%,低于预期的预测指标。属于温和通胀范围,反映了物价水平得到有效控制并保持基本平稳。”

As for the molecular motors, they’re geared up to bring huge potential to the fields of medicine and energy.
多达10000份影片(一个虚构CIA刺杀北韩领袖金正恩的喜剧片)和500000份宣传单将会在3月26号左右通过气球投放。
Feng said that the Goal for 2017 is to maintain an overall punctuality rate of about 75%.
9.We here in the UK want nothing more than to provide you, our guests, with a fantastic experience this summer, combining the best in international sport, brilliant facilities, fantastic entertainment and a cultural legacy that draws on centuries of excellence in art and architecture. If you ended up with four tickets for the wrestling at the ExCel Centre, well, better luck next time.
3. Economy is already crashing, GDP will get even worse in 2014-2016

Stock pickers encountered difficulty this year in part because of concentration at the top of the market. Just five stocks—Apple, Berkshire Hathaway, Johnson & Johnson, Microsoft, and Intel— accounted for 20% of the market’s gains. If you weren’t at least equally weighted toward them, you had virtually no shot at making up for missing their enormous, index-driving gains. A majority of the market’s stocks did not perform nearly as well. According to the Leuthold Group, only 30% of S&P 1500 stocks posted gains exceeding the index itself. You’d have to go back to 1999 to see anything like this.
Microscopic as the subjects are, the benefits of the scientists’ research are set to be huge.
科金今年去世不久后,记者卢克? 迪特里希出版了一本书,声称科金掩埋不利发现,撕毁文件,并且用不道德的方式取得了HM的同意。
adj. 迷人的

国际移民组织说,不到三万五千人,或者说大约百分之三的移民,是从土耳其经陆路进入希腊和保加利亚的。
The pear-shaped diamond named The Blue is 13.22 carats is estimated to be worth between $21-$25 million.
主流网络游戏仍然是大型多人在线角色扮演游戏 (MMORPG)。报告说,今年10月,中国最热门的10款网络游戏中有6款都属于大型多人在线角色扮演游戏。动视暴雪(Activision Blizzard)开发的《魔兽世界》(World of Warcraft)在注册用户和最高同时在线人数方面仍然排名榜首。但报告指出,目前围绕着这款游戏大陆运营权的政府监管纷争可能会给《魔兽世界》带来负面影响。网易公司目前持有《魔兽世界》的中国大陆独家运营权。
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May everything beautiful and best be condensed into this card. I sincerely wish you happiness, cheerfulness and success.
Small circulation also contributed to the monkey stamp's record price. Only five million "Golden Monkey" stamps were released for circulation in 1980, and they are exceedingly rare now.

"All I got was an extra hour on the bus to work, but I can't get a seat at the stadium," she said as she directed cars toward a mall's parking garage in Rio's wealthy southern zone.
It was a rare glimpse into his closely guarded personal life that also put at risk Apple’s brand in less tolerant parts of the world. Mr Cook was driven to take a stand by his experiences growing up in Alabama, where he has talked of seeing discrimination that “literally would make me sick”.
HEC Paris and London Business School have tightened their grip on the top of the Financial Times rankings of pre-experience and post-experience Masters in Finance programmes respectively, having dominated the finance rankings since they were first published in 2011.

There’s nothing worse than a boss who says one thing and does another, and nothing better than one who keeps his word. Just as managers must trust their team, employees must trust their boss to have their best interests at heart。
1. Am I taking care of myself? Sometimes we get so wrapped up in taking care of others that we forget to take care of ourselves. It can be so easy to leave ourselves behind.
com共同,miss=mit送-共同送东西到指定处-委托com共同,mission(n 使命,任务)-受了别人的委托,说明你得到了别人的信任,所以这是一种使命。
俄罗斯总统普京说,无论谁在明年的美国总统大选中胜出,他都希望改善与美国的关系。
Online banking and P2P lending has developed rapidly in China amid a push by Beijing to expand financing for consumers and small businesses. Upwards of 2,000 companies operate in China’s P2P lending milieu.