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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

皇明集团再曝太阳能热水器潜规则:普遍铅超标

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 大批量冲款砖涌入市场 扰乱市场潜藏危机 the quarantine period, and its counterpart organizations do so abroad, all in concert with the World Health Organization.

中国(大陆及香港)在排行榜上新添了25个成员,增长数量超过其他任何国家,共计207家。三个国家今年首次在排行榜上亮相了:毛里求斯、斯洛伐克以及多哥。
“We have resolved this matter and will move forward to build on the important actions Honda has already taken to address our past shortcomings in early warning reporting,” said RickSchostek, Honda executive vice president, in a statement. “We continue to fully cooperate with NHTSA to achieve greater transparency and to further enhance our reporting practices.”

The Republican candidate appeared unsure at times and occasionally stumbled over his lines as if struggling to remember his briefing notes. He began sweating as Obama, aggressive from the start, got the better of him during exchanges on Iran, Iraq and Russia as well as on US military spending.

Sam Smith, 'The Thrill of It All'
shoulder
Texas was one of the first states to emerge from the recession and it continues to attract companies on the basis of its low tax burden, predictable regulatory environment and skilled labor force. Texas employment is expected to expand 3% annually through 2017, according to Moody’s. (Arizona’s forecasted rate is a microscopic 0.04% better). Texas has attracted a lot of attention from California companies and Governor Rick Perry has not been shy about contrasting the business climates of the two states. California firms EBay and Electronic Arts have both chosen Texas for large expansions in recent years. Austin has been a hotbed of activity this year with Accenture
But despite the anticipation, it seems the underwear brand's debut in the Chinese city is not going entirely to plan.
According to the annual Global Trade Protection Report, companies in the US launched 43 anti-dumping cases in 2015 and a further 22 anti-subsidy investigations aimed at securing countervailing duties. The US took the lead in both areas, overtaking India and Brazil, which launched the most cases in 2014 and 2013.
尽管当下是一个全球性的经济环境,但仅有约20%的美国人会说第二门语言。Sixty Vocab的目标就是以其在线外语游戏改变这一现状。基于2000个单词相当于一门外语的六成精髓的假设,Sixty Vocab试图使学习必要词汇的过程变得有趣。这些在线游戏能教你在对话中最为常用的词汇,并辅以限制时间的规则——你在越短的时间内猜出单词,你就能越快地进入到下一个阶段。Sixty Vocab填补了你高中课程和昂贵外语学习项目之间的空白,为那些想要在早餐咖啡或通勤时间学习一门外语的人提供了一个独一无二的选择。
联合国下属的国际农业发展基金会(IFAD)上周三表示,2016年,约有2亿名打工人员--其中一半是女性--向他们在亚洲、拉美和非洲的家人汇款4450亿美元。
n. [宗

"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

将第10题到14题的分数相加,计算自己在“社交抑制”维度的得分。
Against: To some extent it's divided American audiences, perhaps damaging its hopes of winning best film.

On average, executive pay packets hit 7.09 million yuan in 2016, up 8% year-on-year, higher than the rate of China's GDP and per capita disposable incomes, which were 6.7% and 6.3% respectively.
A cemetery dating back roughly 1,700 yearshas been discovered along part of the Silk Road, a series of ancient trade routes that once connected China to the Roman Empire.
当科比的身体长到了6尺6寸时,高中时期的他已经是一个相当中型身板的家伙。可以想象,在1996年,想抵挡住17岁的科比进攻就很难。我相信,这几乎是不可能的。
也许你在地铁上上见过各种着装怪异迥异的角色出现,可应该没人在月台上见过大熊猫成群结队吧。

['elim?nt]
The letter mysteriously arrived at the California University of Pennsylvania, in the north-eastern state of Pennsylvania, 10 days ago. Written to Mr Moore, the two-page letter was postmarked 20 February 1958 and signed "love forever Vonnie".
Though many people associate Porsche with pure performance cars, in recent years the brand has expanded their lineup to include the Panamera, a luxury large car shown here, as well as the Cayenne and Macan SUVs. According to most reviewers, the Panamera not only lives up to the performance heritage of the Porsche’s brand, but also coddles occupants with an opulent interior and the connectivity features today’s luxury buyer demands.
A police raid of an illegal food store in southern China has exposed tonnes of rancid, decades-old chicken feet being 'processed' to be sold to unassuming customers.
The ranking measures the quality and breadth of the schools’ postgraduate programmes. Schools must take part in all four rankings to be eligible for a full score. LBS rose from third last year by participating in all four rankings for the first time.

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

Taylor Swift has been named the most charitable celebrity of 2012.
政府已经意识到了房地产泡沫的危险性——可能造成国民经济的通货膨胀,甚至可能因为泡沫破灭,最终导致正在复苏的经济脱离正轨。政府已经出台了相关的政策措施,给火爆的房地产市场降降温。在2010年依靠政府出台的政策来调控房价,你认为这有多靠谱?

CDC

拿比利时来说,理由更为显而易见。该国人口主要由弗拉芒人、瓦隆人和日耳曼人组成,但国家足球队中却有数名非洲裔球星。目前,摩洛哥裔比利时人,包括中场费莱尼和边锋查德利——组成了最大的非欧洲小团体。就像法国队内有北非和加勒比小分队、德国队中有土耳其裔球员一样,比利时国家队也从多元人口结构中受益:一个来自西欧,一个来自非洲,还有一个来自东欧。
安哥拉,津巴布韦,和阿尔巴尼亚的排名在所有国家中上升幅度最大。“从广度和深度上来讲,拉丁美洲,加勒比地区,以及撒哈拉以南非洲等地域的国家,人民幸福感提高比较大。腐败的减少也是提高幸福感的一个很重要的原因。”

This year has been one of diverse and bold hair and makeup choices, from the frizzy, matted blue-tinted mane of the Witch in “Into the Woods” to the shimmering, expertly shaped pompadour of James Brown in “Get On Up.” In some cases, the absence of hair comes into play, like the bald, heavy-on-the-eyeliner look of Ramses in “Exodus: Gods and Kings.”
公司:网络投票公司Everyone Counts
6、沉溺于社交媒体
迄今为止,Bigcommerce同名技术的吸引力就在于其简单性,以及与商户同步成长的能力。史蒂夫o凯斯说,“对于一些人来说,成败即系于此。”凯斯以公司董事的身份为Bigcommerce提供美国创业趋势方面的建议。“就在五年前,如果要打造一家有吸引力的网店,你需要花费几十万美元。如今,几个小时就可以搞定,每月成本还不到100美元。”

加拿大
“If lenders are too optimistic during market booms and too pessimistic in downturns, that could be a good reason for authorities to set conservative capital requirements,” he suggests. “Higher haircuts might dampen the initial run-ups, but they could also dampen the subsequent fallouts when tides turn.”
In terms of individual commodities, coffee prices, which are trading at about $1.62 a pound, are expected to decline significantly, with an especially bearish outlook on arabica coffee.
convenient

11. Our gut bacteria are messing with us in ways we could never have imagined. New research has revealed that neurodegenerative diseases like Parkinson's might actually start out in the gut, rather than the brain, and there's mounting evidence that the human microbiome could be to blame for chronic fatigue syndrome. With gut bacteria showing signs of controlling our appetite, changing our brain structure, and triggering brain lesions that could lead to strokes, our tiny passengers are a force to be reckoned with.
Last year, only 930,000 of the 1.39 million qualified finally entered the exam halls.
福特是硅谷一家软件开发公司的创始人,他认为“或许需要从根本上重建我们的经济规则”,以减轻机器人和自动化的进步带来的冲击。他提出建立保底的基本收入,即“公民红利”,作为一项根本性的补救措施。
门票很快销售一空,只是大多却不是落到铁杆球迷的手中。
鲁纳尔说:这颗钻石可能产于南非的普列米尔矿山,现称库里南矿场。”

According to exam questions and some test-takers' feedback posted online after the exam, the difficulty of the questions was moderate and hot political and social issues, such as the Long March rockets, China's foreign affairs, the Yutu lunar rover and entrepreneurial efforts by college students, were mentioned.
《琅琊榜》的意外爆红让这部戏成为2015年秋季档电视剧中的翘楚。同样改编自网络小说(海晏著)的《琅琊榜》2015年9月首播。该剧由胡歌、刘涛等人主演,讲诉了才冠绝伦的谋士梅长苏为昭雪多年冤案进行的一系列斗争。虚构的人物和朝代让改编剧集巧妙地躲过了历史准确性上的责难。它精美的场景布置和无懈可击的故事情节受到了广大观众的一致好评。
"If all these train tickets were lined up, they would circle the earth 7 times," said Zhu Jiansheng, deputy director of the Institute of Computing Technologies with the Chinese Academy of Railway Sciences, where the ticketing system was developed.
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。
Baby Driver recently placed on the National Board of Review’s Top 10 list. The film holds a 93% on Rotten Tomatoes and took in over $100 million dollars at the box office.

这名43岁的女子被判处为期12个月的行为考察,并且不得再次拥有宠物。
部分在企业界的资助下,该机构将一流毕业生派到面向低收入社区的学校至少两年时间,而且也完全知道,其中许多人将会在这一时期结束后不再从事教学工作。
To SKN Company in Russia for exploding old Russian ammunition and creating diamonds. Now that`s recycling!
宝能投资集团董事长姚振华是2015年财富榜的黑马,他的财富在一年之内上升了820%,达到172亿美元,使他上升到财富榜第四位。

这位开国之父指出,选举人团既会防范外国势力想在我们议会中获得不当影响力之心,又会确保总统之位永远不会落到并非具备必要素质的杰出者那种人手里。
n. 无限
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!
n. 反映,映像,折射,沉思,影响
But perhaps we are finally there. Perhaps the curtain had to fall on the show before it could fall on that part of the ready-to-wear shows. Perhaps the history hamster wheel that we seem to be on — which has seen us cycle through the 1970s as well as some of the big hair and bigger shoulder pads of the 1980s (yes, we are there again) — will finally stop turning.
据西藏扶贫办公室透露,位于中国西南部的西藏自治区,去年共有15万农村居民脱贫。

In the first 10 months of the year, Chinese exports to the US were up 5.2 per cent from the same period in 2014, while exports to countries in Asean were up 3.7 per cent, according to Chinese customs figures.
陶博宏表示,这可能过于悲观了。他说:“亚洲的情况往往比我们想象的更快变化。”
4.Candice Swanepoel

其中一个球迷站在女孩对面的球迷俯下身来想和女孩索吻,此时女孩正与她的朋友用法语交谈时,男子假装很囧地和旁边一个朋友来了一个拥抱。
The demagogue’s campaign leads naturally to despotism — the tyranny of the majority that is a mask on the tyranny of one.
发布日期:2015年
上榜的密码中有几大主题,包括人名和兴趣爱好。
《无为大师》