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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

欧司朗进军一般照明遭股东反对 欲转战汽车或路灯照明市场梦碎

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 京华时报:最受欢迎建材品牌 the quarantine period, and its counterpart organizations do so abroad, all in concert with the World Health Organization.

以下国家在“2017年最佳国家“整体排名中相当亮眼 。这份排名意在衡量全球最大经济体。
What? Hasn't his firm made enough money off Bernanke's cheap money printing? So he's blaming 'lower growth on fiscal austerity, ' even as Bernanke keeps blowing up the Fed's balance-sheet bubble by trillions under the delusion he's America's savior because our dysfunctional Congress failed?

5. The 2012 Ig Nobel Chemistry Prize

The decaying feet, some dating back to 1967, were being 'cleaned up', plumped up and whitened at the 'foul-smelling' plant using bleach and other chemicals, before being prepared for sale.
Movie buffs will soon be able to celebrate with a visual feast at the Beijing International Film Festival, where nearly 500 high quality films will be shown.
……太紧张,差点昏过去。
For the first time, China is home to the world’s three biggest public companies and five of the top 10. State-controlled Chinese bank ICBC holds onto its No.1 spot for a second consecutive year, while China Construction Bank takes second place and Agricultural Bank of China moves up five spots to third. They’re joined in the top 10 by the other member of the “Big Four” Chinese banks, Bank of China, at No.9.
Apple Chief Executive Officer Steve Jobs holds the new " iPad" during the launch of Apple's new tablet computing device in San Francisco, California, in this January 27, 2010
No. The Bank of Japan’s life will get tougher in 2018 as the US Federal Reserve tightens policy and widens the interest rate gap with Japan. But governor Haruhiko Kuroda is determined to hike rates in response to one thing only: inflation. The BoJ may let the yield curve climb a little if prices start to accelerate, but real interest rates in Japan will end 2018 no higher than at the start of the year.
Actress in a Mini-Series or Movie: Sarah Paulson, “The People v. O. J. Simpson: American Crime Story”
range

"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 attitude of the founder will set the tone for the business. Negativity, laziness and entitlement waste time and money while they tarnish your reputation. Success largely depends on making mistakes and accepting blame in stride. Owning up to and facing challenges head-on is what makes a mere business owner a leader.
1940年5月,德国进军法国,将40万英法联军围困在敦刻尔克的海滩上。在英国和法国军队的地空掩护下,盟军利用所有能用上的军用和民用船只,有条不紊地进行了撤退。这个英勇行动的最后,有33万名来自法国、英国、比利时和荷兰士兵得以安全撤退。

4. We were wrong - the testes are connected to the immune system after all. Researchers have discovered a "very small door" that allows the testes to send one-way signals to the immune system, and it could explain why some men struggle with infertility, and why certain cancer vaccines keep failing.
Not until recently anyway. But scientists at Weill Cornell Medical College have at last managed to—at least with mice and monkeys. This produced artificial retinas, whose chips convert images into electronic signals and whose tiny projectors convert electronic signals into light.
Tom Petty
China and its southern neighbour failed to come to an agreement on cross-border trade last month during Vietnamese president Truong Tan Sang's state visit to China, where he met with his counterpart Xi Jiping.

确认发现近地宜居行星
安联(Allianz)每4年会举办一次公司内部的国际奥林匹克运动会。所有运动员费用统一由公司负担,届时还有开幕式。2010年的“奥运会”在布达佩斯举办,有超过70个国家的运动员参与。
adj. 毁灭性的,令人震惊的,强有力的
[tr?ns'p?:t]
因此,有如此强大的南美洲队伍坐镇,主要的挑战力量将来自何方呢?嗯,来自欧洲的强势力量恐怕便是最显而易见的答案了,你还能去哪里寻找一个比西班牙更有冠军相的球队呢?作为一支卫冕冠军,并坐拥两届欧锦赛的冠军头号,这是一支不仅知道如何出色发挥,同时知晓如何赢得比赛的队伍。因此,虽然梅西和罗纳尔多曾获得所有年度最佳球员的头衔,但是哈维(Xavi)和伊涅斯塔(Iniesta)却将所有主要冠军据为己有。那么,他们在2014年将延续冠军生涯么?对于这个困扰世界上其他国家的问题,答案是肯定的。不仅大多数老将依然坚守岗位,许多包括科克(Koke )和蒂亚戈·阿尔坎塔拉(Thiago Alcantara)等有才华的年轻球员也加入了。不仅仅如此,他们还从东道主的眼皮下挖走了一个才华横溢的射手蒂亚戈·科斯塔(Diego Costa)收入囊中,因为这位马德里竞技(Atletico Madrid)的前锋选择为西班牙效力,而非自己出生国家踢球。

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

如果不是看作有利可图的投资的话,人们依然喜欢欣赏早期绘画大师的作品,从中获得愉悦。苏富比称,6000人参观了12月5日至9日的早期绘画大师作品拍卖会预展,而6月份的印象派和当代艺术品拍卖会的参观人数为6400人。很多历史悠久的画作的确在低端价位上找到了市场,在12月9日至10日的早期绘画大师作品日间拍卖会上,佳士得和苏富比的售出比例都很高,分别是67%和65%。
《沃兹汽车》将于1月15日在底特律一个与北美国际汽车展(North American International Auto Show)联合举办的仪式上颁发十大最佳引擎奖。

CDC

“The Man Who Knew is an impressive work of scholarship,” Lionel Barber, editor of the FT and chair of the book award judges, said. “It’s a masterpiece of political economy and, above all, it’s a great and enjoyable read.”
[kɑ:st]

They are calculated using a methodology that focuses on a school's research performance and reputation, not its specific undergraduate or graduate programs. This is a separate methodology than those used for other US News rankings such as Best Colleges and Best Graduate Schools.
grant
Mr Talbot notes that regulators in Japan are encouraging fee-based sales with a new fiduciary code and other measures that will play to the low-cost appeal of ETFs.
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。

据哈佛大学校报报道,至少10名学生因在脸书私聊小组中发布“猥琐表情”而失去哈佛大学的入学资格。
"It struck me as shocking news. As a big fan of Go, I never expected AI to be able to beat a human champion at the current stage of development since it's a pretty complicated game," he said. He predicted that "fueled by this victory, capital and talent will flood into the AI sector".
射箭、射击、铁人三项、现代五项ykXdDI-D*%c]。
确实有人有近乎完美的记性,可以从过去经历中检索出大量信息。只是,即使很多人认为这样的记忆已经很完美,他们有的时候也不能准确清晰地记起一些特定的细节。虽然真正完美的记忆并不存在,但你还是可以拥有近乎完美的记忆力,超越这些记忆达人,去抵抗岁月给你带来的疾病和健忘。

在屏幕前对女主人公大喊“不要在深夜独自下楼”,不再是徒劳无用的了。在这款互动式惊悚游戏中,玩家可以控制游戏人物的行动。游戏的剧情由电影制片人拉里o法森顿和格拉哈姆o雷兹尼克与游戏开发商Supermassive Games精心打造。故事中,八位好友被困在遥远的山区度假村,还有一名不受限制的精神病人。游戏群星云集,其中包含《神盾局特工》(Agents of S.H.I.E.L.D)的演员布雷特o道顿,美剧《纳什维尔》(Nashville)的演员海顿o潘妮蒂尔和《极品飞车》(Need for Speed)的演员拉米o马雷克。玩家将控制各个角色探索这个恐怖的世界,试图在黎明到来时存活下来。没有人是安全的。在游戏中,每一个决定都会导致不同的结果。游戏剧本长达一千余页,拥有数百个不同结局等待玩家发掘。蝴蝶效应使得游戏不会有相同的剧情,而唯一不变的是,这款游戏十分惊悚。不要独自一人或是在深夜里尝试它。
The city offers excitement beyond your expectations, with grand churches, a richly varied number of museums, a growing modern-art scene and streets that come alive with summer festivals.
5)我支持你:我们都犯过大错误。此时,不要回避,要对对方说一些肯定的话语:“我不是在说你不行。你会度过这个难关的。你不是一个人在战斗。我们将一起解决此事。一切都会没事的。”
这是两部后自语核(post-mumblecore)喜剧,讲述自我认知及其边界的故事。布西内斯克的影片是完美的怪人三角,三条边分别是盖·皮尔斯(Guy Pearce)、寇碧·史莫德斯(Cobie Smulders)和凯文·科利根(Kevin Corrigan),以德克萨斯州奥斯汀怪人们轻松胡混的伪装出现。皮文的影片探索精神病以及日间电视节目的的黑暗疆域。由于克里斯汀·韦格(Kristen Wiig)的精彩演出(她饰演一个名叫爱丽丝·克里格的彩票得主),《欢迎来到我的世界》成了关于美国梦想者的精彩肖像,既令人不安,也鼓舞人心。
尽管销量大幅增长让人欢欣雀跃,但它并不是汽车业今年最重大的新闻。底特律先是因为通用汽车公司(General Motors)提拔玛丽?芭拉出任汽车业首位女性首席执行官而欢欣鼓舞;紧接着,福特汽车(Ford)首席执行官艾伦?穆拉利在重回波音公司还是加入微软公司(Microsoft)两者间犹豫不决之际,它又紧张得大气都不敢喘。传统的三巨头抱怨现有产能已挖掘到极限,开始制订扩张和聘用新人的计划。特斯拉公司(Tesla)让电动汽车的销量火了一把,而且不肯按行规出牌;而同时谷歌公司(Google)则在自动汽车研制上一马当先。

"I heard from several business leaders who shared their concern about our relative silence and impact in urging the political leadership to act on behalf of the citizenry," Schultz wrote in a letter on his company's website.
This year's best midseason trade action happened early:
With both the S&P 500 and Nasdaq returning over 14% while the Dow and MidCap 400 each kicking in close to 10%, you would assume that passive investors would have an awful lot to celebrate this year. And indeed, they would have, if it weren’t for those pesky overseas stocks that did nothing but drag on the performance of any diversified portfolio.
后来,通用汽车在1958年设计出一款无人驾驶汽车,其原理是:由线圈感知道路中所嵌入电线的交流电信号,并相应地调整方向盘。然而汽车确实能自主驾驶,但并不能称为第一辆全自动驾驶汽车,因为它必须依赖嵌在地面的电线。在日本的筑波机械工程实验室,津川和他的几个同事发明了世界上第一辆自动驾驶汽车。然而,德国工程师恩斯特·迪克斯被称为无人驾驶汽车的先驱。1987年,他发明的"极速",时速超过90千米(56英里/小时),行驶了大约20千米(12分钟)。7年后,他发明的VaMP,不但可以识别道路标记,而且能定位自己在车道内的位置,还能勘测其他车辆,甚至能判断何时该变道。一年后,他和他的团队发明的自动驾驶汽车,从德国行驶到丹麦,最高时速为180千米(111英里/小时)。整段旅程中,仅有5%左右的路程是人为驾驶。
作为每年都会有超过100万人参加的国家级考试,研究生入学考试对于学生的学习生涯是非常重要的,而作弊事件也一而再再而三被曝光。

单词reform 联想记忆:
单词regulate 联想记忆:
美国人星期一庆祝哥伦布日。每年十月第二个星期一是纪念哥伦布到达美洲的哥伦布日,属于联邦假日。意大利探险家哥伦布受命西班牙国王,四次率领船队探索新世界,但从来没有完成他最初的目标,也就是找到一条向西通往亚洲的海上航线。哥伦布为探险者开辟了美洲大陆,使世界历史进入一个新时代。
福布斯杂志称,26岁的劳伦斯能排名榜首,大部分得益于从《饥饿游戏》系列影片的最后一部中分得的收入,以及从她参与拍摄的即将上映的太空探险影片《乘客》中所得的一大笔预付费。

pandemic
这套邮票价格如此之高的原因是因为这是中华人民共和国1949年建国以来,第一次中国邮政发行的生肖邮票。
通过药物注射传播艾滋病病毒的情况已得到有效控制。2017年,经注射吸毒感染者的人数相比2012年下降44.5%。
添加方式2.搜索微信号ikekenet添加即可。
In this Jan. 7, 1997, file photo, Steve Jobs, chief executive of Pixar, speaks at the MacWorld trade show in San Francisco.
The letter surfaced in a Pennsylvanian university mailroom earlier this month.

adj. 值得(做)的
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。
皮克斯动画公司CEO乔布斯(此时乔布斯已重返苹果公司)在苹果展销会上作演讲,1997年,1月7日

La La Land producer Jordan Horowitz returned to the microphone after being told about the mix up and said 'Moonlight won Best Picture' and insisting that 'this is not a joke'.
Michael Smurfit Graduate Business School at University College Dublin showed the best overall progress, moving up 21 places to 48. Guanghua School of Management at Peking University returns to the ranking at 38, after missing last year due to a low response rate from participants.
7. Get Comfortable
6. “Taxi”(Jafar Panahi)
?援助工人担心在海地的粮食危机,上周那里飓风桑迪造成了52人死亡。联合国也担心洪灾可能导致霍乱病例急剧上升。在加勒比海桑迪造成至少69人遇难。