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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

简评国务院《关于化解产能严重过剩矛盾的指导意见》

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 红木家具市场升温 教你如何辨别红木优劣 the quarantine period, and its counterpart organizations do so abroad, all in concert with the World Health Organization.

7. Dental hygienist
vt. 使流通

'If global demand picks up in the developed world, and you combine that with the growth in the emerging economies, I think the market is going to get tight,' he said, which means those mighty peaks could return to the oil-price graph.

在Ross居住的单元,不准记者入内,一名妇女在门缝中礼貌的说,孩子的母亲还没有准备好公开发言。
Anyone can have a bad day at the office, but this disappointing performance at Christie’s followed an old masters sale in July that took in 19 million against a low estimate of 31.5 million.
6. Photojournalist
冷空气是被一个名为高空急流的气流循环带到美国本土的内部,这让北极的冷空气南下。但是,一个抵消这种冷空气的怪现象,让异常温暖的热带空气停留在西部地区、阿拉斯加大部分地区以及北极大部分地区的上空。
The two extraordinary sex toys will go on display at an upcoming exhibition at the Asian Art Museum of San Francisco in the United States.
《生活真奇怪》
《初来乍到》(Fresh off the Boat),ABC,2月4日播出。这部喜剧是根据大厨与美食、旅游真人秀主持人黄颐铭的回忆录改编的,讲述20世纪90年代中期的佛罗里达,一个华裔美国家庭克服文化冲突,努力适应美国生活的故事。哈德逊·杨(Hudson Yang)饰演迷恋嘻哈乐的11岁男孩艾迪,在《采访》(The Interview)中饰演金正恩的兰道尔·朴(Randall Park)饰演他的父亲,一位郊区牛排餐厅骄傲的店主。
会。在2018年美联储可能多次加息的情况下,新兴市场中的交易可能会波动起伏。有时可能感觉有点像2013年“削减恐慌”(taper tantrum)重演。然而,平均GDP增速将升至5%,高于去年4.7%的预测值。这主要是因为近来处境艰难的俄罗斯和巴西境况将好转。

"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

Mr Cook must balance that with the secrecy that surrounds its product development. Already, there are whispers on Apple’s campus about another secret project, on the scale of the iPhone or Watch, which is pulling in talent from across Cupertino.
British schools outperform the French on both new criteria. Warwick Business School, the top UK school for career progress, is second overall for the criterion, 30 places above the first French school, HEC Paris. Alumni from UK schools also see a higher increase between their first salary after graduation and now, at 62 per cent versus 45 per cent. However, UK school alumni still have a lower salary on average than their counterparts who studied in France, at $55,000 versus $64,000.

13) I am often down in the dumps 0 1 2 3 4
crew
It is interpreted that in general, college education facilitates a long-term income advantage.
科技:凯迪拉克将在汽车的后视镜添加高清视频功能,其视野要比传统的后视镜开扩四倍,因为它能够在最大程度上减少了车柱和乘客对视线的影响,对于上了年纪的凯迪拉克车主和颈椎不好的人来说,这的确是个福音。下一个即将被广泛采用的技术,则是让汽车在倒车时,能够发出像垃圾车那样的“滴滴声”。

Rounding out the top three is Fleetwood Mac at $59.5 million. Though the band contains three men, it also boasts two high-profile ladies—Stevie Nicks and the recently-returned Christine McVie—rendering the group eligible for this list. Its On With The Show tour included 86 concerts during our scoring period, grossing well over $1 million per city.
无从业资格的司机从事网约车服务将面临1万(折合1500美元)至3万元(折合4500美元)的罚款。
● “特朗普为想要离开美国的公民提供非洲或墨西哥单程机票”
飞速变化的效应
Caleb Rogers is one of two people facing legal action from gaming studio Epic Games for using cheat software to play the game Fortnite.

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

节目2 歌曲《中国味道》,凤凰传奇
Chinese universities have also spent millions to recruit internationally renowned academics and build state-of-the-art facilities, said Baty.

CDC

The bigger Tesla gets, the more complex its operations become. Since it sells directly to customers and eschews franchised dealers, it will have to develop a network of service centers to handle repairs on the cars it sells. Its unusually generous warranty, which obligates it to buy back used cars for 50% of their original base price after three years, could create a second channel of used Teslas. “Tesla will be eating a lot of three-year-old cars that aren’t as sexy or rare as they were a year ago,” wrote one Seeking Alpha blogger. ‘To me, it sounds like a potential mess.”
Nicole Kidman had daughter Sunday Rose at age 40, with her husband, the country singer Keith Urban. 妮可·基德曼40岁时和其丈夫,乡村歌手凯斯·厄本生下女儿桑迪·

n. 压力,压强,压迫
科学家指出,这增加了暴雨和洪水的危险,因为气温升高会导致大气层里积聚更多水蒸气。
房价尽管缓慢却持续不断地增长与近期数据走势一致,这些数据显示10月份对房地产投资有所增加,新一轮限购对录得的销售几乎没有任何负面影响。
The number of people living in poverty in rural areas was reduced by 12.4 million.

源于:qualify(v 使具有资格;限制)
据当地媒体报道,这一犯罪团伙设在广西壮族自治区首府南宁,他们向腐肉中注射化学药品,使其增重50%,这样每吨腐肉便可获利16000元人民币(合1750英镑)。
[k?m'pein]
“Nick is an exceptional product thinker,” Adam Cahan, Yahoo’s senior vice-president of mobile and emerging products, said. “He does represent a generational shift in the kinds of things he is thinking about and what it means to be truly mobile. That generation is not just mobile-first, they are mobile only. That’s a different point of view.”

我的饮食健康吗?我们所吃的食物种类很大程度上会影响我们在身体和情绪上的感觉。食用过多垃圾食品会导致偏执,使人精力降低。反之,饮食健康则会使人有更好的情绪和更高涨的劲头。
惊慌随之而来,不过这名少年很快镇定下来,他决定把控局面,寻找逃生出路。
In a statement given to the website Kotaku, Epic Games said the lawsuit was a result of Mr Rogers "filing a DMCA counterclaim to a takedown notice on a YouTube video that exposed and promoted Fortnite Battle Royale cheats and exploits."
Currency movements have had a strong impact on agricultural commodity prices this year, with the UK’s referendum on the EU leading to a sharp fall in the pound that pushed up the price of food imports and boosted agricultural exports.
9. Add Personality

May the coming New Year bring you joy, love and peace.
The relocation is also part of the integration plan for the Beijing-Tianjin-Hebei cluster, which aims to ease congestion in the capital and achieve more balanced development in the region.
Yes, 2014 is an absolute total disaster just waiting to ignite. In 'Doomsday poll: 87% risk of stock crash by year-end' we analyzed 10 major crash warnings since early this year. Since then, more incoming bogies raced across our radar screen. Ticking time bombs from Congress, the Supreme Court, sex, carbon emissions, Big Oil, NSA, IRS, Tea Party austerity. Relentless. Mind-numbing.
作为参加英国《金融时报》在线MBA排名的一个条件,至少70%的课程内容须在线提供。在15所上榜院校中,有9所对校园学习不作任何要求。其余6所学院坚持让学员参加周末或为期一周的在校课程。
营造80年代的感觉

反对:在某种程度上,《三块广告牌》分裂了美国观众,它赢得最佳影片的希望或许会因此破灭。
室内环境:这栋砖砌结构、灰泥粉饰并铺着瓷砖屋顶的两层楼房屋由Dorr & Dorr公司设计,于1916年完工,近15年内曾经翻修。该房屋采用了半牧场、半工匠艺术的设计风格,运用了简洁的线条、开敞式空间、典雅的木制品和彩色玻璃等设计。翻修工程由明尼阿波利斯市Sala建筑公司的约瑟夫·麦茨勒(Joseph Metzler)完成。
How has your trip to the US sofar this summer?
“D型人格”最先由荷兰蒂尔堡大学的心理学家Johan Denollet提出。他还设计了一个测试,帮助人们认识自己是否具有D型人格特征。

[k?n'tein]
Anyone who doesn't feel they can tap into their inner-Picasso to create amazing drawings needn't worry. The study demonstrated that it wasn't the quality of the doodles and drawings that helped participants recall given words. Drawing a simple outline of a banana offered just as much benefit to the memory as a perfectly drawn piece of fruit. Additionally, the study found that participants only needed to spend a few seconds on their drawing to receive a significant boost to their ability to recall the word. The researchers plan to take their research a step further in the future by introducing more complex words and ideas and measuring the memory success of participants asked to recall those intricate thoughts.
伊法斯夫拉腾以英国独立党(U.K. Independence Party)为例,它的官方平台力主脱欧,但是面向选民的宣传中又强调移民对经济与文化的影响,她说这是一种混合了务实与民粹的论调。
美式快餐发源企业、《财富》美国500强公司麦当劳(McDonald's))上周四宣布,它将用200亿美元进行股票回购和派发股息,由此加入了过去18个月企业界的股票回购浪潮。
来自的日本的Kazutaka Kurihara和 Koji Tsukada被授予声学奖,以奖励他们发明的“沉默枪”——这是一种可以打断人说话的机器,其原理是让说话者听到自己稍有延迟的说话声音,这个装置可以治疗在特定演讲中容易结巴的人。
Demagogues are the Achilles heel of democracy.

Best Companies rank: 66
Citing recent figures from the CPB Netherlands Bureau for Policy Analysis, that show global trade in seasonally-adjusted volume terms fell 1.1 per cent between September and October, Mr Leering suggests last year will prove to be the worst year for world trade since 2009.
Letizia Battaglia

尽管很多人总把保时捷与纯性能车联系在一起,但近年来保时捷扩大了他们的阵容,包括帕纳梅拉,即为上图的豪华车型,除此外还有卡宴和小卡宴SUV。根据多数评论家,帕纳梅拉不仅继承了保时捷强大的性能,还满足了使用者对高端内置和联网特性的需求。
Remember Anthropoid. A rather overlooked drama from earlier this year, it starred Jamie Dornan and Cillian Murphy in the story of a failed assassination attempt on Hitler's third in command, SS General Reinhard Heydrich. Another crack at this story is being attempted with HHhH, this time round with Jacks Reynor and O'Connell as the plotting soldiers, plus Rosamund Pike and Mia Wasikowska as the objects of their affections, and Jason Clarke the target of their anger.
'Increased production in the U.S. meant that spot prices weren't reacting quite as much as in previous geopolitical incidents,' Mr. Hansen said. There is so much supply that threats to it have less impact than previously, and 2014 will be 'the first year in a while when supply growth is going to outpace demand growth,' Mr. Hansen said.
一个坐牢的诈骗高手爱上狱友并多次越狱,这看起来只能是小说情节,但却多少是斯蒂文·杰伊·拉塞尔的真人真事。与金·凯瑞饰演的电影主角一样,拉塞尔最初因诈骗入狱。他的男朋友吉米得了艾滋病,为了陪他,拉塞尔逃脱了这次刑罚。两年后拉塞尔被抓回监狱,不久吉米就去世了。
By more than one measure, 2014 is a year the Honda Motor Co. would prefer to forget or to obscure, reflected in a roundabout way by its grand slogan for 2015, “The Year of Honda.”