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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

190套大套型公租房今起登记

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 建材企业要坚守行业底线 the quarantine period, and its counterpart organizations do so abroad, all in concert with the World Health Organization.

克普克表示,在这些情况下,美联储不但能引发危机,还会增加新兴市场因其他因素引发危机的脆弱性。
'What I was trying to do was wrap myself in his mantle and write a book that would be worthy of him.'

哈佛大学发言人瑞秋?戴恩拒绝对该新闻发表评论。她在邮件中写道:“我们对于个别申请人的录取情况不予置评”。

You might want to hope that people shared these articles as a joke. I want to hope that. But we can’t: the analysis points to a recent BuzzFeed and Ipsos Public Affairs poll which found that 75 percent of Americans (84 percent of Republicans and 71 percent of Democrats) were easily tricked by fake headlines. What a fantastic year for fact-checking and rational thought and Mark Zuckerberg’s self-awareness.
The Swiss school came top of the list of 90 best masters programmes worldwide in 2016, winning its sixth consecutive crown.
摩洛克位于非洲北部地区,被称为通往非洲的一扇大门,主要旅游城市包括首都拉巴特、最大城市卡萨布兰卡、马拉喀什以及阿加迪尔市。
flame
沃尔玛百货
获奖者:布兰妮·斯皮尔斯
2016年的年度色彩与以往不同,它是两种颜色的组合:粉水晶(Rose Quartz,一种矿物粉色)和宁静蓝天(Serenity,一种淡蓝色)。在该公司的网站上,这两种颜色浑然融为一体,看不清它们的界线。
你可以点击此处浏览全部的假新闻,这里列出的是排名前五的假新闻:

"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 third gunman, Amedy Coulibaly, who stormed a kosher supermarket on Friday,never left for such training, said Valls.
‘Jordan,’ ‘harley,’ ‘robert,’ ‘matthew,’ ‘daniel,’ ‘andrew,’ ‘andrea,’ and ‘joshua’ all made it on the list – along with ‘football,’ and ‘lakers.’

促进外贸继续回稳向好。
“万一有个通过Airbnb投宿的客人放火了怎么办?”纽约市律师协会(New York City Bar Association)合作公寓和共管公寓法律委员会(Cooperative and Condominium Law Committee)的会长菲利丝·H·韦斯伯格(Phyllis H. Weisberg)问,“谁来赔偿损失?”
The parallels between Snapchat, the upstart "sexting" service, and social media behemoth Facebook (FB) in its early days are uncanny. We all know how well Zuckerberg's long bet paid off (not to mention how thoroughly he vanquished those dastardly Winklevoss twins). Could Snapchat's future be just as bright?
在中国,微信还吸引了越来越多的高端用户。腾讯过去在这个群体当中并没有多高的份额。

Of course, the recovery of the job market has been, and probably will remain, incremental. Job growth needs to be much stronger to actually make a big dent in unemployment, which remains high at 7.9%, though down from 10% three years ago.[qh]
“Obviously, a single year, even if it is a record, cannot tell us much about climate trends,” said Stefan Rahmstorf, head of earth system analysis at the Potsdam Institute for Climate Impact Research in Germany. “However, the fact that the warmest years on record are 2014, 2010 and 2005 clearly indicates that global warming has not ‘stopped in 1998,’ as some like to falsely claim.”
"Quality supervision authorities at all levels must intensify quality supervision and keep cracking down on law violations to improve the quality of products and protect consumers' rights," said Mei Kebao, deputy head of the administration.
“Even if you have made your peace with a Fed rate rise there are other reasons to be nervous,” said David Hauner, head of emerging markets at Bank of America Merrill Lynch, who points to falling oil prices and the slowdown in China to illustrate why market volatility measured by the CBOE’s Vix index, a barometer of investor sentiment, has been elevated since August.
“我跟她很像,我们真的就像一对老夫妇。”

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

中国的全国居民消费价格指数(CPI)和工业生产者出厂价格指数(PPI)仍很温和或处于收缩区间,但上月都出现了些许回升迹象。
今年,我最喜欢的人物报道可能是Kiki Zhao对中国目前读者最多的诗人之一余秀华激动人心的描写。余秀华是一个了不起的人。她患有脑瘫,过去41年里大部分时间生活在农村,在一张矮桌子上写作。高中没毕业的她说自己“在能读它们(名著)之前,我就知道如何写作了”。现在,她受邀前往斯坦福大学等地,她不愿被比作艾米丽·迪金森(Emily Dickinson)。

CDC

Copestake said the return of Tokyo to top of the list came as no great surprise as the Japanese capital had steep real estate costs and rents, as well as high wages fuelling prices.
elegant

n. 改善(正), 修正案,某物质能改善土壤有助生长
Turn your work in on time. If extra credit work is offered, do that too.
与此同时,法国拉罗谢尔高等商学院(La Rochelle Business School)的排名却下滑12个位置,排在第60位,去年该学校是排名上升最快的学校之一。
Ladies and gentlemen, may I welcome you to the Bad Manners Awards 2016?

crime罪行+al表名词,“人,物,状态”→犯罪分子
It shifts your kid's weight to your shoulders and core instead of your back.
[leis]
《二十二》讲述的是22名慰安妇的故事,是中国首部票房超过1亿元的纪录片。

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”.
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.
单词accomplished 联想记忆:
Since you will be spending so much time in your office space, you should be comfortable enough to enjoy what you do. A comfy chair will keep you pleased throughout the day. We recommend the Allak Swivel Chair, $59.99, at Ikea.com. If you need music to keep your mind stirring, we recommend the Sound System iPod Speaker, $220, at UrbanOutfiters.com.
n. 高兴;快活

New Year time is here. I hope you have a wonderful New Year. May every day hold happy hours for you.新年来临,祝新年快乐,愿你时时刻刻幸福欢乐!
平均工作经验:费城班10年,旧金山班12年
The report also shows that despite the rising pension insurance balance since 2012, the payable number of months fell to 17.7 months last year from 19.7 months in 2012.
Chinese people are intelligent and hardworking and they have an inexhaustible drive for pursuing a better life for themselves. The government needs to create the enabling environment for our people to fully use their talent and initiative.
这名女演员在法国尼斯和土耳其遭到袭击后,在Instagram上发表了一封貌似诚挚的信,但为了显示魅力,配图却是一张自己身穿性感内衣的照片。

Chen is followed by Yang Huiyan, the 35-year-old heiress to Country Garden, a property development company based in Guangdong. Yang is worth 48.5 billion yuan.
In the book, Galore moves in with Bond in London and together they spend their mornings squabbling.
《嗨翻姐妹行》
The French president would have ranked much higher had he not taken a 30% pay cut on assuming office in 2012.

"If it (transforming the economic development mode) only results in empty talk instead of being implemented, then economic development cannot be promoted in a sound and rapid way, and may even not be sustained." LI YIZHONG, member of the CPPCC National Committee and former minister of industry and information technology
北京2016年受理外籍人士及其家属永久居留申请较2015年增长426%。
此外,有6个地区的GDP增速低于7%,其中东北的辽宁省以负增长垫底。
Russia and Nato have both called for a de-escalation of the Turkey-Netherlands row.
survey
No. This crisis hit Amsterdam in 1772, after a respected Dutch investment syndicate made a disastrous bet on shares of the British East India Company.

10. Am I worrying about the future? Worrying about something that hasn’t even happened yet causes stress and anxiety. Focus on the moment in front of you and realize that it is all that exists.
需要注意的是,票房总收入和个人收入是两个不同的概念。在2012年6月到2013年6月期间(这是我们编制最新全球100名人榜所采用的时间段),唐尼的估计个人收入为7,500万美元,比强森多挣2,900万美元。而本文所讨论的数字是每位明星出演的电影在今年斩获的全球票房。
美国太空探索技术公司在航天器充分回收方面取得重大进展

It makes piggybacks more comfortable.
In contrast to last year when the vast majority of economists expected the ECB to launch full-scale quantitative easing, just under half of the 33 respondents thought the ECB would do nothing this year. The rest said the ECB would expand QE or cut interest rates, although some of those who expected more easing stressed that the central bank was unlikely to radically reshape its existing policy response.
greenhouse
乔斯·威登在度假的时候萌发了创作《萤火虫》的设想。他当时正在读一本叫做《天使杀手》的书,这本书讲述了一名葛底斯堡战役中的士兵的故事。威登深深地被这个士兵日复一日的艰辛生活所吸引。这本书的作者描写了大量日常生活中的繁琐细节,以及人们如何在缺乏现代科技和商业之便的情况下艰难度日。而威登对这种描写方式推崇备至。
Part of the appeal of online programmes lies in their flexibility, reach and slower pace of delivery than cam-pus-based MBAs. Apart from IE, which imposes an 18-month time limit, participants have on average about five years to complete their degrees.