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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

2015年1-11月顺德家具出口达69.8亿元

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 “抢人大战”推动多地楼市升温 the quarantine period, and its counterpart organizations do so abroad, all in concert with the World Health Organization.

n. 图形,数字,形状; 人物,外形,体型
不是因为我乐意看到一部精彩的电视剧剧终——如今已被公认为电视剧的黄金时代,而它正是这个时代的先驱。

请尊重一下那些支持你的人以及节目主持人,能在访谈开始前把口香糖吐了吗?

Helsinki-based developer Remedy Entertainment has blurred the line between Hollywood and games with previous incarnations Max Payne and Alan Wake. Now the studio is combining next-generation visuals with the tension and drama of scripted television. Set in the university town of Riverport, Quantum Break puts players in control of Jack Joyce and Beth Wilder, a pair of ordinary people who are given the extraordinary power to manipulate time after an accident that creates a time rift. Time will randomly break down during the game, which causes disasters in the environment that pause, stutter, rewind and freeze. Fans of Max Payne’s bullet time will see new strategies emerge with gunfights involving time-amplified combat as the player fights against the Monarch Corporation. In addition to the virtual storyline, the game features custom live action storytelling that’s personalized based on the decisions one makes.
a
LeBron is invulnerable to age
One of the more unique games announced at Gamescom was Silent Hills, the latest sequel in Konami’s bestselling horror franchise (which has also spawned two films). The world of gaming and movies combine in this new game, which is being developed by Metal Gear Solid V: The Phantom Pain creator Hideo Kojima and Pacific Rim director Guillermo del Toro. The game will star The Walking Dead’s Norman Reedus.
时间:2009-10-29 编辑:vicki
Harvard Business School, London Business School (LBS) and MIT Sloan School of Management, three of the MBA ranking’s longstanding heavyweights, all lost ground to their competitors. Harvard drops two places to fourth, the first time in nine years that the Boston school has been outside the top three. London Business School falls three places to sixth, its lowest position in 14 years. MIT Sloan School of Management falls to 13th place, the first time in 10 years that it has been outside the top 10.
这是自从2001年来第一次由一名既不是小梅瑟威、也不是泰格·伍兹的运动员,荣登收入榜第一名。
但最近,回购势头开始减弱。跟踪回购比例最大的100家公司的标准普尔500回购指数最近创下了自2012年年中以来的首次下跌。随着股价连创新高,股票回购所产生的推动作用消失,公司投资较长期项目或使用多余现金进行收购变得更有价值。

"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

3. "The Walking Dead" (3.6 million)
12岁的年纪,大多数的小女孩都还在向父母争取打耳洞的机会,努力适应高中生活,从青少年时代开始为将来做准备。

The potential impact of any surprise move in Fed policy was clear in the “taper tantrum” of 2013, when just the suggestion that the Fed might soon rein in its ultra-loose monetary policies was enough to provoke a wave of global panic.
“我们非常确信成交价会达到预测的最高价。”
The annual rich list of China's movers and shakers gives a temperature check on where money is flowing in China, and underlines the growing financial muscle of the country's super-rich.
9. 2012年搞笑诺贝尔奖之解剖学奖

现在,她主要在模特行业发展,但是她也很希望跻身演绎圈。
Consumers are feeling better. Consumer confidence is at the highest level in four years, thanks to improvements in jobs, housing and the stock market. In the wake of the recession, Americans whittled down their debts, avoided borrowing and delayed purchases. That means the stage could be set for stronger consumer demand, which could nudge businesses that have put off hiring to add more workers. 'Business has likely pushed productivity growth as far as possible,' Principal Global's Mr. Baur says, suggesting employers will need to boost payrolls to meet stronger demand.[qh]
另一方面,2月PPI同比下降4.9%,低于1月5.3%的同比降幅。2月PPI降幅为8个月以来最低降幅。
以下是根据官方数据(所有收入均按市场汇率折合成了美元)得出的世界主要国家领导人收入排行。
n. 反映,映像,折射,沉思,影响

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

马丁沃尔夫(Martin Wolf)
据中新网报道,德国工商总会外贸主管沃尔克·特赖尔表示,2016年下半年从德国出口到中国的货物量增长非常迅速。

CDC

Despite the breakthrough, Jack Ma, chairman of Alibaba Group, said there was no need for human beings to fear machines.
今年的排行榜包括90个管理学硕士项目,创历来最高纪录,多于2015年的80个。

Despite the fact that each market rebound ended up as a V-shaped affair, each successive rally was carried out with less and less individual stock participation. Glaring divergences between winners and losers, large caps and small caps, preoccupied the commentariat for most of the spring and summer. Deflationary concerns from Europe and the Japanese technical recession further confounded analysts, as Treasury yields and inflation indicators in the U.S. were driven lower despite the improving domestic economy.
年少轻狂时,我们事事都乐于尝试。因为觉得自己一无所有而不惧怕失去。也正因如此,我们有时会在不知不觉中走上一条不归路。   WE want to try a little of everything
The clip, taken on a mobile phone, starts with the crowd singing the Frankie Valli lyrics: You're just too good to be true, can't take my eyes off of you'.
Rachel Bloom burst into tears as she won best lead in a comedy or musical TV show while Amazon show Mozart In The Jungle was another surprise victor at the awards show when it was named best TV comedy.

You’re a busy person. At times, it all can feel overwhelming. Asana is a cloud-based project management software that helps you keep it together. (Trust me, I’ve tried them all.) Flexibility is built into Asana’s architecture. Each “task”, or “subtask”, can be associated with a larger “project” and “department.” In addition, you can even assign recurring tasks to yourself or team, which makes life so much easier. Stop trying to remember all the things you’re supposed to do and let Asana structure your life.
“这是真的“我必须去做这件事”的时刻了,”他说。
会计和咨询业
专家还指出,最近几年的人口控制政策的效果已经开始显现出来。

The US president-elect has pledged to abandon trade agreements which could have wide-reaching effects on American imports and exports of commodities if trade agreements are revised.
Everything Else
“BlackBerry has not engaged in discussions with Samsung with respect to any possible offer to purchase BlackBerry,” the company said in a statement issued Wednesday afternoon. “BlackBerry’s policy is not to comment on rumors or speculation, and accordingly it does not intend to comment further.”
Fortunately, the rules are changing. The proposal of China's Central Economic Conference in early December to give rural residents permanent urban residency sent a strong signal. Premier Wen Jiabao's call in late December for the reform of the household registration system will surely speed up the process.
Copestake said fears over economic austerity and the stability of the euro had pushed the index of euro zone cities down in the past year while the inclusion of Caracas was due to artificially high exchange rate controls.

vt. 帮助,使 ... 容易,促进
社交中我经常压抑自己
The report shows Cases of dishonesty connected to e-commerce platforms and enterprises, logistics companies, third-party payment platforms and consumers in a five-day period from Nov 11 to 15 increased 57.49% compared to last year.
'It is absolutely perfect, absolutely pure externally and internally. It is almost a dream,' said Jean-Marc Lunel, senior international specialist of Christie's jewellery department.
Investors have noticed Honda’s troubles. The automaker was one of the very few worldwide to avoid deep losses during the global financial crisis. Still, its common shares are down 17.2% over the past year, while the Nikkei 225 Index is up 7.4% and Toyota Motor shares are up 19.5%.

Taken alongside data released in the past few days, and it doesn't make things easier. The country is still struggling with deflation and household spending slumped last month. But retail sales data released this morning topped estimates.
待售房产:一栋带有三间卧室和三间半浴室的河滨当代住宅
目前已经得到证实的是,胡歌将会加盟该电影,继续出演主角“李逍遥”,而女主角的扮演者暂时还未透露。
The piece was taken away for laboratory testing, and the Spielman family only received a phone call this month telling them the amulet had been identified.

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。
他表示:“今明两年,美国经济增长可能会在3%以上。欧洲终于在复苏。日本也正取得重大进展。印度、中国和印尼等新兴经济体以及其他国家的经济增速,可能会继续保持在高水平,还可能会加速。”
节目13 歌曲《嫦娥》,李玉刚 景海鹏 刘旺 刘洋
debut
巴黎法新社-1400法国人已经加入圣战组织或者打算这么做,总理ManuelValls周一说。
Variety Talk Series: “Last Week Tonight With John Oliver” (HBO)

其中,国产动作片《战狼2》位居榜首,成了中国史上收入最高的影片,门票销售狂揽56.8亿元。
单词recommend 联想记忆:
亲爱的妻子

A powerful earthquake struck off Japan's southern coast on May 30, prompting fears in China of a catastrophe similar to the tsunami and Fukushima nuclear power plant meltdown that followed the 2011 Japanese quake. In the end, no fatalities or major damage were reported.
Yes. There are plenty of positives: earnings, economic growth, and US tax cuts. But they are already known. Stocks look ridiculously expensive by historical standards, but that tells us nothing about short-term moves. Ultimately, it comes down to liquidity, which has driven markets since they emerged from the crisis in 2009. If all goes according to plan, central banks will be decreasing their balance sheets, and removing liquidity, by the end of 2018. If they go through with this, the odds are that the S&P will stall. But even a tiny tremor could make the bankers blink. Expect the momentum to continue.
每个人都喜欢饼干,但是买一个智能烤箱似乎可以多烤一点。这个烤箱承诺在短短10分钟内就烤好饼干,但不考虑时间的因素,使用老式的烤箱似乎更容易做更多饼干。
那些具有3年驾驶经历,无重大交通事故、危险驾驶、吸毒、酒驾记录的司机将可参加网约车考试。
哥伦比亚美女夏奇拉集歌手、作词人、舞蹈演员、唱片制作人、舞蹈编剧以及模特于一身,她在2015全球美女榜中位列第十位。她还曾登上福布斯全球权势女性榜,以及“舞动奇迹”最受欢迎舞者榜。2014年7月,她成为脸书粉丝过亿第一人。