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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

新国标明年1月出台 水龙头企业重新布局

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 东莞家具互联网大厦与京东合作 打造“白拿节” the quarantine period, and its counterpart organizations do so abroad, all in concert with the World Health Organization.

野村证券驻首尔策略师Michael Na表示:“这可能只是个开始。要惩罚韩国企业,他们有如此多的选项。”
7. 2012年搞笑诺贝尔奖之物理学奖

4. New reserves of helium discovered

5.布莱恩·克兰斯顿曾是杀人嫌疑犯
"Investing in improving innovation quality is essential for closing the innovation divide," said Soumitra Dutta, dean of Cornell College of Business and co-editor of the report.
5.Emma Watson
“候选人的能力并不能用他们的年龄来衡量”,桑尼伯恩告诉《人物》(美国杂志)说,”尽管唐纳德·特朗普是当选美国总统的人中最年长的,但是“他的推文就像幼儿园小朋友一样”。“
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7. Amy Adams - $13.5 million
Analysts say headline import figures may start to improve in the coming months since commodity price falls were particularly pronounced at the end of 2014, which will mean smaller year-on-year falls in Chinese imports in value terms.
Will Smith had a very successful career in the late 80s and early 90s as the second half of rap duo DJ Jazzy Jeff and the Fresh Prince. But in spite of his financial success, Smith did not manage his money well. It's a pretty classic tale, really. New fame, lots of money, no future plans, and lots of fancy toys added up to a lot of overspending. This lack of oversight and fiscal irresponsibility landed him on the brink of bankruptcy. He owed the government back taxes that he had not paid.

"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

此外,由于该机构的一些业务涉及为政府提供教育方面的建议,此类员工的专长是很宝贵的。
But researchers this year came up with a new method that makes flexible, realistic ears out of real cells. Those cells come from rats and cows, and they form a collagen gel that can take the shape of any mold. When placed in a mold of a human ear—a mold assembled using a 3-D printer—the gel forms an ear in less than an hour. The artificial ear then just needs a few days growing in nutrients before it's ready to be implanted in a subject.

"He said if he didn't get that package within the next 53 years, he would call to complain," university spokeswoman Christine Kindl told Reuters news agency.
总的来说,在选择就读EMBA的原因中,创业排在最末(10分中得5.5分)。学员的主要动机是学习管理(9.1分)、拓宽人脉(8.3分)及增加收入(8.1分)。
The fact is, Hon Lik is not the first person to invent the e-cigarette. Way back in 1963, Herbert Gilbert made the world's first device that could be used to inhale tobacco-flavored air. In Gilbert's original version, there was no form of combustion and it was free of nicotine. He later designed a prototype that used a battery to create heat. He also used different flavors of water to create steam. He presented his prototypes to different chemical, pharmaceutical, and tobacco companies, but they simply turned down his prototypes.
Li Yi, a Shanghai-based independent IT expert, told the Global Times the surge in the number of smartphones was the primary reason for the growth in Net users.

试图推动亚洲ETF持续繁荣但迄今未获成功的公司表示,有必要从根本上改革似乎表明,市场将由说服监管机构和客户重塑行业格局的长期努力定义。
'So it's how do you square that circle? How do you remain true to the original creation and concept and yet at the same time not offend people in the 21st century?
Now Chinese investment in western economies is back on track to break a further record this year: during the first six weeks this year Chinese groups have announced $70bn in potential deals, although the number is highly provisional and not all such acquisitions will be completed.
全球缓慢的经济增长并不会很大程度的拖累美国。美国的出口额虽然可能持平甚至下降,但是这将会被由于油价下降的石油进口额抵消,所以贸易赤字并不会给美国经济造成更进一步的影响。
恭祝健康、幸运,新年快乐。

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

New year’s events can be anticlimactic. Not so in China where stock markets began 2016 with enough excitement to make traders choke on their bubbles: Shanghai stocks dropped 7 per cent on Monday, Shenzhen more than 8 per cent. It could have been worse. A new mechanism that suspends trading after a drop of 7 per cent halted play early — in this instance, by an hour and a half.
即使他们打的比赛也许并不完美,但是,金州勇士队完美的赛季开局阶段仍然在继续。

CDC

教育部在一场新闻发布会上表示,全球大多数的留学生都是来自中国。
If successful, the funding would underline the rapid growth of the sector this year. In April, Lufax raised $500m at a $10bn valuation.

The fundamentals of the Chinese economy remain sound, the capital adequacy ratio and provision coverage of commercial bans remain high, and we have many financial tools and instruments that can be used. We have the confidence, the ability, and the means to forestall systemic risks.
This way you can tell everyone to shut up and get out so you can go to your "mind palace".
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。
无论黑莓和三星联姻这种事是否发生,时代的发展已经凸显了移动技术下一波创新(和诉讼)浪潮的所在:在日益移动化的世界中掌握权限控制方法,阻止企业遭到黑客袭击。(财富中文网)

According to historical accounts, Richard's body was transported naked and bloody on the back of a pack horse to Leicester before being buried in an unmarked grave at Greyfriars, a Franciscan friary in the central English city.
I experienced this pessimism personally in Davos in January 2014. Several leading western intellectuals asked me whether war would break out between China and Japan. I was so confident that there would be no war in east Asia that I offered to take bets with ten-to-one odds against myself with eminent western journalists. Two took up my bets. And I will be collecting on these bets when I return to Davos in January.
为保证更快的经济增长就必须要要消除美联储所担忧的另一个恶魔:通货紧缩,或者说价格下降。Baumohl 称“经济增长达到3%以上,并且自90年代以来新增了大量工作的国家发生通货紧缩几乎是不可能的”。
他们必须发自内心地明白,通过操纵选举、打击异见或者骚扰反对派让临时权力永久化是不合法的。

现在对于宣传单张的内容还没有详细的介绍,但之前投放的传单都包含谴责北韩统治者家族的言论。
As he scanned the Internet for knowledge, D'Aloisio decided that what he really needed was a better way to determine, at a glance, what was worth reading. He envisioned a summarization tool that used language theory to give a meaningful synopsis in fewer than 400 characters.
数据显示,在欧洲外的最受游客欢迎20大目的地中,游客的消费主要用于购物,而非就餐。尽管其中很多是世界著名的美食之都。
投资者也关注到了本田的这一困境。尽管在席卷全球的金融危机中,本田是全球少数几家能独善其身、避免严重亏损的汽车厂商之一,但在过去几年中,其普通股股价下跌了17.2%,而同期日经225指数却上涨了7.4%,丰田汽车的股价也上涨了19.5%。
If a sitcom that lasts for 10 years is considered popular, then surely one that still stirs up emotions after 20 must be considered a classic. Friends first aired in the US in 1994, featuring a cast of six young men and women in New York. In the time since, it’s become one of the most famous titles in the sitcom genre, aired in over 100 countries and regions in the world.

The second-best song that Shirley Bassey performed for the James Bond franchise is still one of the best. For a series that, on some level, has always been about wish fulfillment, listening to one of the great singers belt powerful notes about avarice seems just about right. So say what you will about the film (it's not on many of the lists of James Bond's best), but Bassey had good material here and she knocked it out of the park.
?The Aston Martin doesn't hurt. Not at all. Neither does dropping tons of cash at exotic casinos -- throwing money around makes men more attractive to women who are interested in flings. And, like Bond, men who gamble with women around are better at it.
Disparity between the 34 cities surveyed was still greater, as the the average bonus of over Rmb15,800 in Beijing was more than triple the lowest-paying city of Shenyang, the provincial capital Liaoning located in China’s northeastern rust belt.
单词impresario 联想记忆:
6.Do All the Work, Plus More

就目前来看,我觉得他们大概会在第十顺位,在这么低的顺位想要得到一个立即能够成为球队建队基石的新秀可不容易,并且留给鹈鹕队出成果的时间不多了。
In other words, investors are paying far more for Tesla’s future promises than today’s performance by other luxury car manufacturers. Daimler, the manufacturer of Mercedes-Benz, sold more than 2.5 million vehicles last year and has a market cap of about $85 billion. So, although it sells 70 times more vehicles than Tesla, its market cap is less than three times greater.
然后,新班子的第一个举动——用路易斯-威廉姆斯从火箭那里换来一个一轮签——是一个明确的信号,他们意识到必须不惜一切代价保证六月抽签时自己的选秀权能在前三。
temptation

v. 借,供应货款,
这位备受欢迎的英国女孩莉莉·唐纳森曾担任过“Vogue”这类时尚杂志的封面女郎,她展示了自己性感迷人的夏装,身着一件白色半透明的抹胸连衣裙参加了此次活动。这位三十岁的模特穿着一件近乎透明的礼服,看上去漂亮极了。
Current prosthetic hands do little beyond filling the arm-shaped space between your body and the air. Sure, they can grasp things all right, and they help in balance, but they lack one of the human hand's most important abilities—the sense of touch. People with prosthetics can't detect if they're in contact with an object without looking at it directly.
夏洛特·艾玛·艾奇逊《1号天使》
control
《中国文化遗迹》杂志是一本新创立的期刊,专门把发表在《文物》杂志上的原创文章翻译成英文。其创刊号上就发表了这座1700年墓地的发现。

China's Ministry of Education (MOE) said at a news conference that most of the world's foreign students who study abroad are from China.
"We are also witnessing a positive progress of diversification," he said. "In the past, most Chinese companies' patent filings were concentrated in the ICT sector, but now there are increasingly patents filed in engines, turbines, sports, automotive, and biotechnology sectors."
3.会飞的自行车

The central government is aware of the danger of a property bubble that can inflate the national economy or even burst, derailing the ongoing economic recovery. Several policy measures have been announced to cool the red-hot real estate market. Well, how much trust do you place in government policies to control housing prices in 2010?
The cemetery was first found in July 2007and was excavated by the Xinjiang Institute of Cultural Relics and Archaeology,with assistance from local authorities. The research team, led by Zhiyong Yu,director of the Xinjiang Archaeological Institute, published the findings in Chinese in the journal Wenwu. The article was recently translated into Englishand published in the journal Chinese Cultural Relics.
For those outside the scientific community, the response to the retraction has been mixed.
对两者而言,反对派是敌人而非观点不同的同胞。
“This is our make or break moment for the tenant movement,” said Ilana Maier, the program director for the Metropolitan Council on Housing. “If we aren’t able to drastically strengthen the rules now, none of this will matter in 10 years.”