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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

二孩概念成商家促销噱头 儿童家具售价上涨

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 分布式光伏发电细化政策出炉 业界称按月结算非常给力 the quarantine period, and its counterpart organizations do so abroad, all in concert with the World Health Organization.

adj. 最初的,首要的,最好的,典型的
This is a story about six friends with precarious love lives who spend their days sitting in a cafe sipping coffee from oversized mugs. Who’d have thought this premise would go on to become one of the most influential sitcoms of all time?

Not because I am happy to see the end of what was one of television’s smartest series, a pioneer of what is now generally accepted as the current golden age of small-screen serials.

Many believe the population is no longer a major threat to China's resources and environment. Instead, China's population challenges have shifted to low birth rates, an aging society and a widening gender imbalance. China has already experienced a shortage of skilled workers in places like the Pearl River Delta, so it might not be long before we see major reforms.
Among the major U.S. airlines, US Airways had the best holiday on-time performance, coming in fifth with 15.57 percent of its flights arriving late during Thanksgiving and Christmas. Meanwhile, American Airlines, with which US Airways plans to merge, was the fourth worst, with 19.7 percent of flights arriving late, according to FlightAware.
In fact, academic research suggests that other economic and social transformations unfolding at the same time have led many people to anchor themselves more fully in their whiteness — even as whiteness itself has lost currency.
The ECB ended the year with a vote on December 3 to cut its deposit rate to minus 0.3 per cent and an expansion in asset purchases that leaves its quantitative easing programme at 1.46tn. The move came days before the US Federal Reserve increased interest rates for the first time since 2006, underlining the sharply divergent policies being pursued on either side of the Atlantic.
公司:女性博客网站BlogHer
约28000枚炸弹和其他弹药在只有俄亥俄大小的南斯拉夫境内爆炸。时任国防部长的威廉·科恩将联军描述为“史上最精确的空中力量运用”。500余名平民在消耗巨量弹药的轰炸中丧生,这一数字出乎意料的低。北约在自己的作战报告中着重强调:所有目标都经过“仔细甄别”,并且“付出了巨大努力以将空袭行动对塞尔维亚平民的影响降到最低”。
经济学人智库表示,尽管没有一个北美城市进入前20名,但是纽约的生活成本相对于其他美国城市有所上升。纽约与洛杉矶并列第27位成为美国最贵城市。
es to you and yours.以我所有的爱心与真诚祝你及全家圣诞快乐。

"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

17. 最复杂的障碍。根据Box Office Mojo网站统计,截止到12月7日,今年发行的20部票房最高的影片中,有7部是由女性主导的。与之形成对照的是,20部由女性为主导的影片中,有五部在全球票房领先,而海外票房占据了电影业收入的70%。这看上去可能很糟,但是比近年的数据要好一点。
It is not yet known who will look after Choupette after Lagerfeld's death.

剧烈动荡石油产量—随着更加缓慢增长的世界经济—造成了原油价格从2013年100美元一桶到2014年年末的几乎50美元一桶的大幅下降,而在美国国内2014年初却造成了通货膨胀的相反影响
推进健康中国建设。
8. “The Diary of a Teenage Girl” In her terrific feature debut, Marielle Heller traces the artistic and sexual awakening of a 15-year-old (a sensational Bel Powley) whose desires leads to adulthood.
Life's ups and downs

据中国国家通讯社新华社(Xinhua)周四的报道,李克强于周三在柬埔寨召开的一次地区领导人会议上发表讲话称,2017年中国经济发展好于预期,对外贸易扭转了两年来的下滑局面。
Millward Brown的BrandZ估值主管Elspeth Cheung表示:“排行榜10强过去由消费品主宰。今年是科技。”
Meanwhile, exports are expected to continue falling due to the combination of weak global demand and higher prices, as well as China’s decision to effectively re-peg the renminbi to the strengthening dollar.
Two years ago, the AFI delayed voting on its year-end list to give critics a chance to see Star Wars: The Force Awakens, which it subsequently included on its list of the 10 best films of 2015. However, this year, the latest Star Wars film, The Last Jedi, which hits theaters on Dec. 15, was nowhere to be found on AFI's list.
5. 范冰冰 1700万美元

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

Don't Make Yourself Too Comfortable
上榜理由:被低估的欧洲瑰宝

CDC

In 1995 Dutch troops serving as UN peacekeepers failed to prevent Bosnian Serb forces murdering 8,000 Muslim men and boys in the town of Srebrenica in eastern Bosnia.
P2P lending has grown quickly in the past two years, with loans outstanding reaching Rmb209bn by the end of June, according to E-Lending House.

Economists had forecast a 1.5 per cent annual rate, after a 1.6 per cent reading in September. Beijing's inflation target is "around 3 per cent" this year.
6月28日
If you thought that getting sector over- and under-weights correct at the outset proved difficult, switching between them throughout the year was nearly impossible. A quantitative analyst from Nomura Securities explained to Barron’s in November that “industry leadership has been reversing from month-to-month at a rate unseen in decades of stock-market history. ‘Even if you’re picking the right stocks in a sector,’ he says, ‘things are moving around so much that your performance doesn’t persist.’”
不过邱佩特并不只是一只宠物猫,它只参与了两个广告的拍摄就在一年里独自挣得了230多万英镑,其中一个是为日本美容产品植村秀拍摄的,另一个则是为德国汽车公司沃克斯豪尔拍摄的。

vt. 以匙舀起
vt. 谣传
《法律与秩序:特殊受害者》(Law & Order: SVU):NBC频道的这部电视剧上一季中的危机仿佛是从肥皂剧中搬来,发生了各种大事,奥利维亚(Olivia,玛莉丝卡·哈吉塔[(Mariska Hargitay]饰)经历了许多危险——喜欢跟踪的变态强奸犯,折磨人的婚外恋,新生婴儿,现在这一切终于平息下来。在今年的第16季中,侦探们回到了重要的性犯罪上,其中一集的灵感来自雷·赖斯(Ray Rice),讲述的是从监控录像中看到一个著名体育广播员殴打自己的妻子。
Companies are always looking to save money, and outsourcing some roles to freelancers can help. Virtual assistants can perform many of the duties of full-time staffers, but with less commitment. These workers could help expand a business, or just encourage things to run more smoothly.

2010年的头号热门搜索问题是“如何打领带”,其次是“如何减肥”、“如何接吻”以及“如何写简历”。
6.摄影记者
The U.S. Congress and the media will go berserk when Goldman announces the size of its 2009 bonus pool. But the outrage will be brief and of little lasting consequence. The 'hate Goldman Sachs' story has been running just too long.
10. Deepika Padukone - $10 million
Profits fell by 54 per cent year-on-year to Rmb105.6bn ($15.9bn) during the period, a drop of Rmb124.4bn, according to figures published by the China Insurance Regulatory Commission.

这位官员表示,相比其他职位来说,那些对教育背景或工作经历没有特殊要求的职位更受欢迎,近些年报名人数达到数千人的基本上都是这种职位。
2015年最佳职业
This quote is the only one picked for the list that didn’t come originally from the Web, but rather from the real world. A government official evading a journalist’s persistent question about the annual total of car loans repaid in Tianjin simply said, “We can’t go into detail on this matter,” which apparently Netizens found really laughable.
An American actress, author, fashion designer, dancer, producer, and singer Jennifer Lopez hold the second place in the list of 10 most beautiful women of 2015. Lopez's personal relationships have attracted worldwide media attention; she has been married three times. Beside entertainment world, J. Lo enjoyed a highly successful business career, consisting of various clothing lines, accessories, fragrances, a production company, television shows and a charitable foundation among other business interests.
[s?'k?m]

adj.
谎言1:不是我!说谎原因:有些事情不值得我们去邀功。
获奖者:加拿大总理贾斯廷·特鲁多
Taken alongside data released in the past few days, and it doesn't make things easier. The country is still struggling with deflation and household spending slumped last month. But retail sales data released this morning topped estimates.

法国是人们最常去的国家之一,整体排名第九。“文化影响力”排名第二,“强国”排名第六。
Facebook首席执行官马克扎克伯格
Alumni from the Swiss school also have the third-highest salary, at $114,449, adjusted for purchasing power parity, behind those from the Indian Institute of Management at Ahmedabad, on $116,476, and IIM Bangalore, on $116,094. St Gallen is also top for the quality of its careers service.
DiCaprio received a pat on the back from producer Harvey Weinstein and a standing ovation from the crowd as he collected the award for best actor in a drama for The Revenant.
American brands such as Chipotle, Texas Instruments and General Dynamics are on the list for the first time.
4. Mark Turner Quartet “Lathe of Heaven” (ECM) On his first proper album as a leader in 13 years, the tenor saxophonist Mark Turner favors slithery interplay with the trumpeter Avishai Cohen, and finds new purpose in post-bop protocols. There’s dry intrigue in his compositions, and supple exactitude in his rhythm team: Joe Martin on bass, Marcus Gilmore on drums.

v. 降低,婉谢
Seoul insists the activists have a democratic right to send the leaflets, but has appealed for restraint to avoid overly provoking the North.
The magazine put his net worth at $3.5 billion, down $1 billion from the rankings it issued a year ago.

BAD SPORTSMANSHIP
Two days ago here in Brazil, we were shocked when we spent some time with some children living on the streets. And this is what one child told us: "I wish I was rich and if I were, I would give all the street children food, clothes, medicine, shelter and love and affection." 在巴西,我被2天前见到的情景震惊了,那时我和当地的小孩在玩耍,其中一个小孩说:“我希望我能富裕起来,然后我会给这个街道所有的小孩饭吃,给他们衣服穿,医疗,住房和爱”。
达奇斯说:强大的财务性能和一系列新的特性使得邻客音成为2012年吸引用户的公司。这样的吸引力有助于公司在2013年从专业的业务网络转向活跃的交流平台。
As the stars' private jets swooped in, the internet was going mad for 'the Dad bod'; the slightly flabby male physique was trending and there were plenty of examples on screen. Deborah Cole of AFP noted a “sweating, panting and shirtless” Gerard Depardieu in Valley of Love and a flash of Joaquin Phoenix's “tubby tummy” in Woody Allen's Irrational Man. When Colin Farrell strode the red carpet for the premiere of The Lobster, he looked his usual trim self – but in the film he is distinctly paunchy. To add some girth for the role of a lonely singleton in Yorgos Lanthimos' absurdist black comedy, Farrell went on a massively calorific diet that included drinking melted ice cream, he told the Hollywood Reporter. Eating “two cheeseburgers, fries and Coca-Colas, and two slices of chocolate cake at 10am is not that fun,” he said. “And I love cheese?burgers."
I wonder if the Pelicans are in that position, too. It looks like their highest Brow-era pick will be Buddy Hield. That's not optimal.