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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

2017年门窗幕墙将华丽转身 创新求发展

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 明星代言不是万全之策 橱柜企业需慎重 the quarantine period, and its counterpart organizations do so abroad, all in concert with the World Health Organization.

"They see some pretty awful things," she told the BBC. "But this is something that will stay with them for a long time."
Ann Hand

2. 在原来工作岗位上呆太久了

Also featured in the 2013 top 10 were Singapore, Zurich, Paris, the Venezuelan capital of Caracas and Geneva.
《受虐待经历影响的瑞典“女权主义外交政策”倡导者》(Sweden’s Proponent of ‘Feminist Foreign Policy,’ Shaped by Abuse)
2.Yeah, I’ll start working on that ASAP! – Because telling you I have 10 things to do first would just irritate you。
政府将于本周五发布新的就业市场报告,此次的报告将因飓风“桑迪”而出现失真。10月下旬的飓风给东北地区造成严重破坏,使很多人失业。经济学家说,“桑迪”有可能导致11月官方就业岗位总数暂时减少10万到15万个,这样一来,就业增量就不足10万,甚至还要低很多。[qh]
排在榜单第三位的是31岁的克丽茜·泰根,她在过去的12个月里赚得1350万美金,首次跻身榜单。
上海交易所和深圳交易所总共完成了61宗IPO交易,较2015年同期分别下滑了67%。融资总额288亿元人民币,较2015年同期分别下滑了80%。
The cyclical theory depends on a dearth of new investment creating a supply crunch in two, three or five years. A lot of projects are being postponed but postponement is no more than a signal to project managers to find a way of cutting costs. Many are doing exactly that.
Emma Thompson, a two-time winner for Howards End and Sense and Sensibility, famously keeps hers in the loo: “They look far too outré anywhere else. They’re great big, gold, shiny things.” She’s not alone – Susan Sarandon, Lionel Richie and Sean Connery all claim to keep their golden fellas alongside their bidets and baths.

"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

圣安东尼奥-委内瑞拉塔奇拉州(美联社)--周末,超过100000名委内瑞拉人到哥伦比亚寻找国内短缺的食物和药品,他们中有些人连夜驱车跟着商队前去。
Cousins's deal qualifies as a blockbuster, the Raptors made two strong moves to bolster their contender status, and the race for the West's last playoff spot got far more intriguing, among other storylines.

每天向大家推送短小精悍的英语学习资料.
我们曾经都经历过:老板们和经理们让我们的生活越来越糟糕,不能管理好一堆文件,不理整个团队的员工。我之前写过一篇文章“不明智老板的特点”,在那篇文章里,一位考虑周到的评论者列出了他对如何做一个明智的老板的一些点评。
Anton, who works in the military, said: 'I thought the Beyonce routine was inappropriate when Steph first told me about it, but when I saw her on the stage doing it, it worked out quite well and everyone enjoyed it.'
谎言3:是的,这挺有道理的。说谎原因:方案二会让我显得毫无头绪。

The most badass super-villains assigned to protecting people, that's Suicide Squad for you. A government agency called A.R.G.U.S recruits villains to perform dangerous tasks that in turn reduces their prison sentence. The task force includes Joker, Deadshot, Harley Quinn, Boomerang, Killer Croc and several other villains from the DC Comics universe.
The King’s Woman
安汉德
capacity
排名前20的大学有13所大学是美国的大学、还有4所英国大学和3所其他大学。

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

Uruguay represents a more curious case, in that its players are footballing aristocracy disguised as minnows. Like Belgium, it is a relatively young nation, yet on the field of play the Uruguayans are old hands. They have won the World Cup twice, first at the inaugural event in 1930, and then in 1950, when Brazil hosted the tournament. The latter occasion, when Brazil succumbed in front of a world-record 200,000 fans or more, is referred to there as the "Maracanazo", a national tragedy still felt today.
请接受我节日的祝贺。

CDC

然而专家却在西方当前的乱象之下看到一种白人身份危机。
vt. 以匙舀起

Reality Competition Program: “The Voice” (NBC)
在叙利亚问题上,普京说,俄罗斯将继续开展军事行动,直至政治进程启动。他说,必须让叙利亚人民自己决定由谁来治理这个国家。他还说,他不知道俄罗斯是否需要在叙利亚设立永久军事基地。
Like any college kid, Evan Wray loved using the tiny pictograms known as emoji. But he hated that there was no emoji to express his Fighting Irish pride with fellow University of Notre Dame students. So, alongside co-founder Sean O’Brien, he built a modest business on that disconnect. TextPride, as it was called, licensed images from brands in the sports and entertainment world and sold them as sticker packs. Within a messaging app like Kik, users could buy a packet of stickers for Disney’s Frozen for $1.99, for example.
HOW MUCH: $1,975,000

“…started swearing during the interview.”
轮滑看起来有点像常规的单排轮滑鞋,不过轮滑的轮非常大,尺寸大小跟自行车车轮差不多,看起来像是溜冰鞋,滑雪板和自行车的合体。最近一家名字叫作战车溜冰的公司声称,他们已经有了一些独特的想法——战车轮滑。根据该公司所说,这种轮滑是"革命性的新轮滑产品"。这是一场改革吗?也许是吧,他们至少在改进设计。这是发明吗?不是的。第一双轮滑早在142年前就已存在 。
已经60岁的微软老大净资产达到750亿美元,尽管比起2015年缩水了42亿美元,却仍足以傲视群雄。自2014年超越墨西哥首富卡洛斯·斯利姆·埃卢以来,盖茨实现了福布斯富豪榜榜首三连庄。
Similar trends have been seen at other Cup matches, though no polls were carried out previously.

The THE Asia University Rankings for 2017 rated Peking University and Tsinghua University, both in the Chinese capital of Beijing, as the second and third best universities in the continent. National University of Singapore is ranked the best.
With a growing need for someone to block and tackle Apple’s raiders and (given its tax investigation in Europe) regulators, Mr Cook’s focus on people, strategy and execution — rather than products — finally started to look like an advantage.
自动驾驶汽车,自拍杆,无人驾驶飞机,触屏设备,电子香烟,喷射背包和许多其他看起来像现代的发明的东西,其实都是老发明。大部分的"发明者"把它们当做新发明,甚至去申请专利。但事实是,这些"发明"已经存在一段时间了。它们都有早期类似的原型,这些早期产品最终没有投入生产,或因为特定原因而限量生产。而有些"发明"得以大批量生产,却因为销售不佳而流产。
The potential for conflict will force China and the US to redefine their roles in a shifting environment that neither is comfortable with. Tensions will be aggravated by anti-China sentiment during the American elections. Asian countries are in a position to delineate the boundaries of influence for these two powers but, given their varied interests, alliances will shift depending on individual concerns.
周期性理论的依据是,新投资不足将导致两三年或五年后出现供应紧张。大量的项目已被延迟,但这对于项目经理而言,不过是要想办法削减成本的一种信号。许多项目经理目前就在这么做。

By the time of the Asian crisis of 1997-98, he says, the Fed had become more responsive and pulled back from its tightening cycle on concern that the turmoil in Southeast Asia would affect the US economy.
桑迪已经造成大规模损害,很可能带来更多灾害。
中子星相撞
discourse
近日,新一期福布斯世界富豪排行榜揭晓,比尔·盖茨在近22年内第17次问鼎榜首。

Company: Eventbrite
Others have come up with some, um, creative ways to say sayonara. When staffing firm OfficeTeam asked about 600 U.S. human resources managers to describe the weirdest ways they’ve seen or heard people resign lately, here’s what they said:
In addition, the top-ranking cities typically performed poorly in costs and culture and lifestyle. China's "cities of opportunity" continue to face challenges when it comes to building cities that satisfy the needs of the populace and provide a high quality of life.
Despite the huge production, the focus was on the 40 gorgeous models who walked the runway.

If you wake up every morning Monday through Friday and never feel excited to go to work, that is a problem. It means you aren't enjoying your job and it is diminishing your quality of life. If you wake up every day and dread going to work, it's time to consider quitting your job.
或许,你能让高中版的韦德停下脚步,但是,当韦德长到6尺4寸时,他变得无法阻挡。
Edward Luce
Another exceptional new field is that of nanotechnology.
这款高端机型将成为苹果产品阵容的一名新成员,加入去年发布的、升级步伐较小的iPhone 7和iPhone 7 Plus的行列。
猪肉和蔬菜价格均同比下降了逾8%。

designer
The dip to the lowest level in five months came as some companies surveyed for the gauge noted that stricter environmental policies – intended to curb the toxic haze that descends upon much of China each winter – had restricted expansion.
5. Geopolitical flashpoints.In the not too distant past, a small supply disruption would send oil prices skyward. In early 2014, for example, violence in Libya blocked oil exports, contributing to a rise in oil prices. In Iraq, ISIS overran parts of the country and oil prices shot up on fears of supply outages. But since then, geopolitical flashpoints have had much less of an effect on the price of crude. During the last few weeks of 2014, violence flared up again in Libya. But after a brief increase in prices, the markets shrugged off the event. Nevertheless, history has demonstrated time and again that geopolitical crises are some of the most powerful short-term movers of oil prices.

失宠行业
吊床架
Criminal gangs have been difficult to catch, however, because illegal meats are often hidden among other produce such as fruit and vegetables, and lorry drivers are often bribed to deny any knowledge of it.
在这场充满政治色彩的颁奖典礼——唐纳德?特朗普(Donald Trump)屡次成为主持人吉米?基梅尔(Jimmy Kimmel)打趣的对象——的末尾,沃伦?比蒂(Warren Beatty)和费?唐纳薇(Faye Dunaway)宣布《爱乐之城》赢得此奖项。然而,就在这部达米安?沙泽勒(Damien Chazelle)编导的现代音乐片的制作人员和演员登上舞台、激动地发表致谢演说时,他们却被告知《月光男孩》才是真正的获奖者。
10. The 2012 Ig Nobel Prize in Medicine