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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

自如“甲醛门”发酵:其委托第三方检测机构不具认证资质

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 中国铁建建成安哥拉最快铁路 建材设备均从国内采购 the quarantine period, and its counterpart organizations do so abroad, all in concert with the World Health Organization.

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单词repertoire 联想记忆:

2015年最佳职业

以下是今年BrandZ全球最具价值品牌百强榜出现的一些趋势:
adj. 令人振奋的,激励人的,鼓舞人心的
6、《招魂2:恩菲德的骚灵》
You can browse the full list at AskMen.com. Here are the top 10 women:
当啤酒杯抬高,从啤酒机挪开,杯底磁铁会封住杯底,您就可以取走啤酒享用了。
如果(转变经济发展方式)还是空谈,不去付诸实施,那不是说又好又快,根本就撑不住啦。“
I'm pleased to see manufacturing jobs returning to the U.S., but I don't expect the manufacturing industry to have the galvanic effect on the economy that many hope for. Why? Because automation will sharply erode the number of jobs any factory requires. The disappearance of blue-collar and entry-level jobs is already a problem, and that problem will grow.
Going into the debate at Lynn University in Boca Raton, Florida, Obama had an inbuilt advantage on foreign policy and security. As president, with access to daily briefings by intelligence analysts, diplomats and generals, he is better briefed and it showed as he dominated Romney in the first half of the debate.

"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

China hopes that the Asia-Pacific region will be one that enjoys order and stability, a region that is able to work out issues through consensus-building consultation, properly manage differences through dialogue and has the wisdom to resolve differences.
触摸屏主要生产商蓝思科技的周群飞以450亿元的资本净值位列榜单第3。

"没人能阻止行动,我会用生命为代价一直投放宣传单张到北韩,"Park说,强调他一直有对抗北韩威胁的准备。
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你可能已经在使用谷歌日历了,但你使用的方式是否正确呢?告诉你一个秘诀:只要把在那个日子和那个时候会真正发生的事情记录在谷歌日历上就行。同时利用iPhone提醒记住那些时间敏感性不太强的事情(即不是那些精确到小时和分钟的事情)。遵循这一战略有助于你保持更清醒的状态。
在接受《每日电讯报》采访时,玛蒂说:“我再也无法过上平凡人的生活了。因为大家很容易认出我来,甚至当我出去玩或是和朋友吃冰淇淋都能被路人认出来。”

5. 范冰冰 1700万美元
根据1894家上市公司公布的2016年财务年报的数据显示,金融和地产业的高管薪酬最高。
对于新来的买家,这些变化能够给他们带来新的住房选择。但是对于既有居民而言,这可能意味着他们必须搬走。这点同样适用于De Robertis Pasticceria and Caffe等商铺。这家咖啡馆已经在东村(East Village)持续经营了110个年头,最近刚刚关门歇业。到明年,联合广场咖啡厅(Union Square Cafe)也可能会结束其在联合广场30年的运营。
玛莎·切利取出嘴里的香烟,喃喃低语:"我也曾经这么想过。"说完便又抽起了烟。马克震惊了(我们想象一下,当知道你的亲生母亲可能会在你沐浴时杀了你,这反应很正常)。马克第一次意识到家庭主妇会变得多么绝望和孤独。接着,他就想到这会是电视剧的一个好素材。这次谈话便开启了《绝望主妇》的制作。
I'm pleased to see manufacturing jobs returning to the U.S., but I don't expect the manufacturing industry to have the galvanic effect on the economy that many hope for. Why? Because automation will sharply erode the number of jobs any factory requires. The disappearance of blue-collar and entry-level jobs is already a problem, and that problem will grow.

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

Yet if “Mad Men” showed us anything (besides how cool a skinny suit could look, and that wide ties really were not a good men’s wear moment), it is that the decade chronicled was a complicated, often unhappy, occasionally destructive time.
Suspecting that the water had been mixed with something harmful, Tang reported the incident to the class monitor and teachers.

CDC

The prices are tough for ordinary Brazilians to afford. The minimum wage in the country is $330 a month, just about what Ferreira said she earns.
Nine provincial-level regions' GDP exceeded 3 trillion yuan in 2016, three more than the year before. The number of provincial-level areas with GDP surpassing 1 trillion yuan in 2016 remained 25.

哈维·韦恩斯坦被指控此后将麦高恩列入了黑名单,同时雇佣莫萨德机构跟踪麦高恩,窃取她的纪念手稿。
就像在领英上面快速的翻新简介一样,Foss说雇主们可能也会关注你突然一下子从推送小猫的GIF图和权力的游戏的剧透到推送一些具有思考意义的产业专注内容,参加Twitter上面找工作聊天。这些举动对你找工作当然有帮助,但是无益于找工作的隐秘性,所以还是要强调一下,慢慢来。
Strong reviews, and praise for the performances - particularly from the children at the centre of the story, and Willem Dafoe, who plays the manager of the motel where they live.
In August, the holdings were to the tune of $80.4 billion while it stood at $79.7 billion in July.

Since then, Teach First has put 5,000 graduates into schools, working with more than 1m pupils in low-income areas, helping to raise standards in classrooms, particularly London.
According to Oliver Cooke, a financial-services recruiter at Selby Jennings in New York, banks have been stressing what they call “internal mobility”, or redeploying staff from one department to another. If a bank facing sluggish conditions in debt trading, for example, can convert a trader to a risk analyst or a compliance officer, it can keep people interested — and it can save a bundle on severance.
他说:“黄金披萨奢华至极。如果你想享受一顿奢侈大餐,那么这份披萨就是为你准备的。”
China has recently made majordecisions about its economic future. On November 15, 2013, China announceddramatic new social and economic policies contemplating much greater relianceon market forces than it has in the past and inviting private-sectorparticipation and foreign competition in industries long previously controlledby the central government. It also relaxed its one-child policy, openingthe country and its people to vast new opportunities and inspiring new hopes anddreams.

报告提供了对除北京和上海之外的28个国内商业和行政中心城市进行的深入考察。
在其他杯赛中,尽管没有做调查,但同样也呈现出类似趋势。
The spread of HIV through drug injections has been effectively controlled. In 2017, the number of people infected through drug abuse was 44.5 percent lower than that in 2012.
特里萨?梅(Theresa May)依然面临着党内阻力。自由民主党(Liberal Democrats)的智者兼领导人文斯?凯布尔(Vince Cable)依然认为脱欧可能不会真的发生。
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在第三场也是最后一场总统候选人辩论中,奥巴马就外交政策发起攻势,一再指责罗姆尼在重大国际问题上的立场不坚定,但未能给他对手迅速崛起的竞选活动一个致命打击。
10. The difference between a lie and a promise is that the believer of a lie is the listener and the believer of a promise is the speaker.
Perhaps in response, at the start of 2017, China's media regulator quietly began including service fees charged by online ticketing companies when reporting box-office figures.
根据一项针对技术发展的国家规划,到2020年时,研发经费的目标是要达到GDP的2.5%。
All-cash buyers. Skittish lenders. Skyrocketing prices. Anemic listings. These realities haunt buyers, turning the house hunt into a demoralizing slog. Unfortunately, buyers will probably have to soldier through another year of a market that favors sellers.

吉密欧(Jamil Anderlini)
单词lace 联想记忆:
n. 购买,购买的物品
10. 米歇尔?詹尼克(澳大利亚跨栏运动员)

喜剧类最佳男演员:杰佛里?塔博(Jeffrey Tambor),《透明家庭》(Transparent)
综合考虑,这些事实与战略规划凸显了中国航天工业的认知——为了成为有竞争力的全球飞机制造商,中国需要拓宽行业的广度与深度。在他们掌握了价值链的两端——飞机设计与集成组装后,中国意识到长期处于价值链中游的组装和子系统地位将摧毁他们的航空业。这就是为什么中国雄心勃勃地与波音、空客等飞机制造商以及美国通用电气公司、劳斯莱斯等发动制造商竞争,形式前所未有地激烈。
统计数据显示,在2009年之前,全球研发支出以每年约7%的速度增长,但在2014年放缓了4%。
The untitled movie revolves around two intersecting love triangles, obsession and betrayal, set against the music scene. It stars Christian Bale, Cate Blanchett, Michael Fassbender, Ryan Gosling, Rooney Mara and Natalie Portman.
3.3M公司
According to the announcement, the new administrative center in Tongzhou will put infrastructure upgrades and ecological improvement on top of the agenda. The municipal government hopes to improve public services in education, healthcare, cultural events and industries in the district.

英国演员丹尼尔卡卢亚扮演的克里斯华盛顿卷入到一个美国小镇的邪恶阴谋中。
For the dynasties that flourished in China around 1,700 years ago "the conquest and effective governance of Kucha would enable them to control all the oasis city-states in the Western Frontiers," the researchers said.
Employers have stepped up their hiring recently, adding 171,000 jobs in October and an average of 157,000 a month so far this year. That's a better pace than last year and the strongest job growth since 2006, Labor Department data show.[qh]

获奖者:哈里王子殿下
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THE AMERICANS (FX, Jan. 28) Season 3 of this terrific blend of Cold War spy thriller and family drama begins with Washington’s K.G.B. contingent feeling the weight of the Soviet war in Afghanistan. Frank Langella joins the cast as the new handler for the show’s husband-and-wife agents, replacing Margo Martindale’s Claudia. (Making its premiere eight days later: NBC’s “Allegiance,” about Russian spies embedded in the United States. Huh.)
Rounding out the top three is Chrissy Teigen, 31, who joins the list for the first time after raking in $13.5 million over the past 12 month-period.
For starters, breaches like that of Bitstamp and the much larger (valued at about $400 million at the time) 2011 hack of the exchange Mt. Gox are often misconstrued as security issues with the currency itself. But they are only signs of flaws in those particular exchanges and not a sign of an issue with the underlying technology. And it is the underlying technology behind bitcoin that most excites. As we wrote in the “Shape the Future” package of our January 2015 issue, most of the vocal enthusiasts so bullish on bitcoin—from big-name entrepreneurs like Marc Andreessen to the developers and miners who spend their days refreshing the bitcoin Reddit page—are more interested in the applications that can be built on bitcoin’s “block chain,” the currency’s foundational backbone, than they are in bitcoin as a monetary system. The block chain allows the secure exchange of any form of value between two entities.