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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

好莱客半年报业绩增15% 推出中期资本公积金转增预案

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 财政部部长谈地方债风险 刹住无序举债怎么做? the quarantine period, and its counterpart organizations do so abroad, all in concert with the World Health Organization.

《大唐荣耀》全剧共60集,改编自2007年出版的小说《大唐后妃传之珍珠传奇》。该剧主要讲述了女主沈珍珠和丈夫的爱情故事,以及他们为保护国家付出的努力。
She said: "I am extremely surprised and overwhelmed. I just want to start by saying what an incredible year for women in film. These categories are so crowed and crammed with incredible integrity and skill and I feel prouder than ever to be included."

这两个人站在后台两端,熟记奖项得主名字,以省去写下名单的麻烦。从以往看,他们都做了细致的检查,以确保准确地填装了信封。据信,按要求,瑞兹和卡利南要随着颁奖典礼的进行毁掉两张相同的卡片。所以,到颁最佳影片奖时,应该只剩下两只最佳影片奖信封。

墓地主人的身份依然是个迷。这座墓地曾经被盗过,而且墓地中没有任何的文字记录来表明这些死者的名字以及他们的职位。
As stars such as Kevin Spacey and Morgan Freeman were alleged to have assaulted or harassed performers, activists began using the hashtag to share their ordeals online.
n. 范围,行列,射程,山脉,一系列
Also called self-driving cars, autonomous cars have been making the news recently. Chief among them are Google's self-driving cars. Google's driverless cars have traveled over 480,000 kilometers (300,000 mi) with only two accidents, both of which were caused by humans. But self-driving cars aren't new. In fact, their concepts have arguably been around since the days of Leonardo da Vinci, who invented a spring-powered cart with a programmable steering device.
Tesla:In an effort to blunt criticism about slow refueling times for battery-powered cars, Tesla TSLA -1.54% starts to roll out of a network of battery-swap stations. CEO Elon Musk must hope he can outdo Shai Agassi’s Better Place, which tried to build a whole company around battery-swaps before going bankrupt in 2013.
平均工作经验:12个月
4. AT&T
It is not unusual for the documented wealth of China’s richest people to surge suddenly — or even for previously unknown tycoons to burst into prominence — as stock exchange listings and other public investments thrust them into the spotlight.

"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

brace原指双臂,用双臂支撑-使稳固用两个brace embrace(v 拥抱)
Please accept my season\'s greetings.

排球拳击乒乓球举重沙滩排球铁人三项艺术体操蹦床篮球射击羽毛球艺术体操足球网球
China's economic performance in the past few years should suffice to put predictions of a hard landing to a full stop. China's economy will continue to enjoy medium-high growth and be upgraded to higher levels
这些项目一般是为平均年龄22岁的学员设计的。
你可能希望分享这些文章的人是出于开玩笑,我也是这么想的。但是我们不能:这个分析指出,通过一个近期的BuzzFeed和Ipsos的公众事务民调显示,75%的美国人(84%的共和党人以及71%的民主党人)很容易就被假新闻的标题所欺骗。这是关于真实性调查、理性思维、扎克伯格的自我意识的梦幻一年。

一有机会就炫一下小卷毛。
Social networking platforms, including Weibo and mobile app WeChat, proved to be the best tools for cyberstars to magnify the power of communication, making it possible to create an industry that combines advertisements, e-commerce and fans.
According to local media, the gang, based in Nanning, the capital city of south China's Guangxi Zhuang autonomous region, was able to make up to 16,000 yuan (£1,750) profit on every tonne of the putrid meat, by injecting it with chemicals, increasing its weight by 50 per cent.
该项目的另一个好处在于,它鼓励了职业灵活性,让年轻人对曲折的职业道路有所准备,而后者可能在现代职场中是必不可少的。
加拿大

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

China’s tourism administration issued a notice on Friday confirming reports that Chinese travellers had been denied entry to South Korea’s Jeju island in recent months for holding incomplete travel documentation. It reminded citizens to “select travel destinations with caution”.
I wish you a happy New Year. All affection and best wishes to you and yours.

CDC

中国12月生产者价格指数(PPI)同比下滑3.3%,为自2009年9月以来最大降幅。矿业价格下跌13.2%,原材料价格下跌6.4%。
激情是保持公司策略顺利运行的关键所在。在创业过程中三心二意,将让你失去成功的动力。从长远来看,坚持不懈是推动一切事物发展的唯一保证,不论是个人生活、工作还是运营一家公司。直到晚年,亚伯拉罕o林肯的大多数努力都以失败告终,但他从未放弃。

['traigl]
Stevens will perform "Mystery of Love" from the film "Call Me by Your Name," and Bernal, LaFourcade and Miguel will perform "Remember Me" from "Coco."
总部位于纽约的世界品牌实验室编纂并于上周一发布了《2016世界品牌500强》榜单,苹果公司夺得了第一名的宝座。
美联储上个月公布了今年放缓购债步伐的时间表。美联储计划在每一次政策会议上将购债规模减少100亿美元,直到今年年底不再进行购债。自从2012年末以来,美联储每个月都买入850亿美元美国国债和住房抵押贷款支持证券。

中公教育表示,周二报名的岗位中最抢手的是位于北京的中国就业培训技术指导中心的职位,已有1430人报考了该职位。
今年中国经济成V字形强劲复苏,随之而来的是许多关于城市房价疯涨的报道。
《大白鲨》的故事非常不现实,但它的原型是1916年由一条鲨鱼造成的一系列真实命案。在被称为“史无前例的系列鲨鱼袭击事件”中,2周内,泽西海岸边有4人被鲨鱼咬死。据报道,犯案的鲨鱼被捕后,消化道中还有尸骸。不过,权威科学家至今无法确定,是什么驱使这条鲨鱼袭击了这么多人。
complex

拉动你的行李箱,带上你的耐心。假日航空旅行季节即将到来,如果你想有趟轻松愉快的旅程,那么对美国人最好的建议就是选择飞往西部。
3. oDesk&Elance
答:英雄是一个不想成为英雄的人。英雄是那种明明完全可以选择,但却选择在那个时刻承担起责任的人。那就是英雄所要做的事。举个例子,在911实践中,飞机上的一些乘客曾经和恐怖分子搏斗。在福岛辐射泄露实践中,有些人前往当地试图修理核电站,并且因此而死。但他们必须这么做。他们是英雄。他们想要的并不是“当英雄”,而是承担责任,做正确的事。
在纽约,任何人不得将多户建筑中的一套没有租户的公寓单间以短于30天的租期出租,这是非法的。然而,几乎每周都有人写信给“房地产答疑”专栏,咨询如何绕开这些规定。如果我交换公寓呢?如果没有书面形式的约定呢?
For almost everyone else, it was a year of frustration against a backdrop of better-than-average returns for the most popular index in the land.

《Look What You Made Me Do》(《看看你们都让我做了什么》)这首单曲可以载入史册了,流行音乐学者们可能会世世代代地讨论它是否是一次绝妙的公关行动。
A minimum of 70 per cent of the con-tent must be delivered online in order for programmes to be eligible for the online ranking. Nine out of the 15 ranked schools had no requirement to study on campus at all. The remaining six schools insisted their students attend weekend or week-long residential classes.
这一点毋庸置疑。从卫生间标志到时装秀,性别界线正在加速变得模糊。现在我们差不多该抛弃传统的“女孩用粉色,男孩用蓝色”的成见了。
“We had to make Steve look like a blue-blooded man of great family wealth,” Mr. Corso said. “There’s a specific look, a definite visual that goes along with that.”
n. 元素,成分,组成部分,(复数)恶劣天气

Ben McLannahan is US banking editor
Release date: Spring 2015
“我非常激动,皮草被禁止参加伦敦时装周是个巨大的进步!” 费斯回应道。
Another love ballad for Bond, but if Nancy Sinatra's song from You Only Live Twice was playing at your orthodontist's office, it would be the sexiest orthodontist's office in town. There's a mysterious quality to the string section, and a playfulness to the declining notes. They combine to make something rather magical. From here on out all of the Bond songs on this list are bona fide classics.

大宗农产品投机交易一直是今年市场波动的一个特点,荷兰合作银行预测,这种趋势将继续。
It was the first "real" James Bond song (again, the first two films only opened with orchestral music), and it's still the best. Shirley Bassey got an opportunity to sing her soul out and she accepted the challenge with obvious pleasure. This is a song that makes the villain Auric Goldfinger seem a lot more threatening (and attractive) than he actually is, but that's part of the miracle of Bassey's work here. It's proud and heroic and enticing and it's kind of a lie, but who cares? The music is pure James Bond, the lyrics are pure machismo, and the performance is perfect.
在2010年世界杯中,智利当属最振奋人心的一支队伍,并在最近的温布利比赛中让英格兰队在赛场上四处兜转,不过,如果哥伦比亚队能够融合射手拉达梅尔·法尔考(Radamel Falcao),那么这支队可能会让一两支队伍神伤了。因此,在所有的南美洲球队中,似乎只有厄瓜多尔难以走出小组赛,而其余的所有国家都有能力奋战到后面的阶段。
Red ones mean passion and romance, yellow ones speak of friendship, and pink can express your thanks.红玫瑰代表热情和浪漫,黄玫瑰象征友谊,粉玫瑰则表达谢意。If
“这是我们租户运动生死攸关的时刻,”大都会住宅委员会(Metropolitan Council on Housing)的项目总监伊拉娜·迈尔(Ilana Maier)说,“如果我们现在不能大举强化规定,那么这些政策在十年内都发挥不了作用。”
根据官方数据显示,今年前10个月中国对外非金融类投资同比下降40.9%,这反映出中国政府严格的资本管控带来持续影响。

今年最令人惊喜的消息还包括油价下跌。经济学家对油价下跌的经济影响也是见仁见智,一方面认为消费者因此节省了不少油钱,一方面则认为这种趋势会影响石油的开采钻探活动。但大家普遍认为这会影响小型车和混合动力车的销量。油价下跌加上车价过高,使得凯迪拉克公司的电动轿跑ELR稳居2014年最不受欢迎的车型“宝座”。11月份,这款售价高达8万美元的电动跑车只卖出了155辆。
‘Hackers are using common terms from pop culture and sports to break into accounts online because they know many people are using those easy-to-remember words.’
accomplished

10月1日
The helium pushes the foam upwards through a stencil.
被调查的34个城市间的差距就更大了。北京市平均年终奖超过1.58万元人民币,超过了年终奖最低的沈阳市的三倍。沈阳市是中国东北铁锈地带辽宁省的省会。
它基于针对各商学院及其2013年毕业的学员的调查。
昨日发布的央行数据显示,中国外汇储备上月出现有记录以来第三大单月降幅。这重燃了人们对于中国遭遇资本外流的担忧,此前中国外汇储备似乎企稳。