HTTP/1.1 200 OK Cache-Control: no-cache, private Content-Type: text/html; charset=UTF-8 Date: Wed, 25 Nov 2020 11:14:28 GMT 少妇P
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

toggle caption
Jeff J. Mitchell/Getty Images

抢人才,名企承诺可“分房”

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 公租房违规转租为何屡禁不止 the quarantine period, and its counterpart organizations do so abroad, all in concert with the World Health Organization.

《在生前留下的物品中回忆世界上最长寿的人》(Remembering the World’s Oldest Person, in the Objects She Left Behind)
Though the Dutch financial markets then had none of today’s technology, they employed many of the same practices that traders use today. Investors bought securities, sometimes borrowing money with loans secured by the shares they were buying. In today's language, they bought shares on margin. Lenders protected themselves by demanding a “haircut” – collateral in cash or securities that exceeded the loan amount by a specified percentage. If the value of the securities dropped below that specified percentage, the lender would demand that the investor put up additional money to stay in line with the haircut. If the investor couldn’t come up with the added margin, the lender was entitled to liquidate the securities and recoup the loan amount.

脱发和头发变白的原因是相关的,科学家首次确认了对此负有责任的细胞。

In the past decade, only three blue diamonds of 10 carats or more with the same vivid grading for intensity have been sold at auction, all weighing less than 12 carats and none flawless, he said.
官方数据显示,全年票房过亿元影片共计81部,其中国产影片占47部。
In global health, 2016 will be remembered as the year a little known virus made a major impact. It felt strangely familiar, but this time it wasn't Ebola making headlines around the world, it was Zika - a mosquito-borne virus being linked to a huge spike in the number of babies in Brazil born with brain defects.
2. 达美乐(Dachis) 品牌喜爱度:-11%/排名:62
国家统计局中国经济景气监测中心副主任潘建成表示,研发经费与GDP之比不断上升,显示出经济增长正由传统要素(出口和投资)驱动向创新驱动转型。
['pail?t]
2014年1月,我在达沃斯亲身感受到了这种悲观情绪。几位著名西方学者问我中国和日本之间是否会爆发战争。我非常有信心东亚不会发生战争,以至于我提出以1赔10的赔率与西方知名记者们打赌。两位记者接受了我的赌约。今年1月回到达沃斯时,我将收取他们的赌注。
对学习充满热情

"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

toggle caption
Selena Simmons-Duffin/NPR

5、邦德具备美女约会种种要求。乐衷于性的女人更喜欢“坏男人”-邦德属于此类。讲究的女人喜欢阳刚男人,寻求一夜情的女人喜欢外型帅气、主动进攻的男人-非邦德莫属。
['p?li?]

贝南克(Bernanke)说今年晚些时候的经济将会走强,所以到时候他可以松开油门,也就是“在今年晚些时候开始减弱刺激性的量化宽松(QE)计划”。对此麦嘉华(Marc Faber)笑了。没错,他笑了。
Yes — by an eyelash. Democrats will need to win an additional 24 seats, meaning they will have to hold on to all 12 Democratic districts that Mr Trump won last year and pick up the 23 Republican districts that voted for Hillary Clinton, plus one or two more for good measure. The math is not on the Democrats’ side, but history is. The president’s party almost always loses some House seats in the midterms, and sometimes loses big, especially when the president has an approval rating below 50 per cent. See Barack Obama in 2010.
7.爱情就像两个人拉橡皮筋,受伤的总是不愿意放手的那一个。
奥巴马取得胜利,也以为着在接下来四年的发展道路:关于国家开支、税收、医疗健康、政府的角色,还有应对中国发展和伊朗核问题等的外交措施。

It even featured in the March 19, 1870, issue of Scientific American magazine. Made by Thomas Luders from Olney, Illinois, and called a "pedespeed," the wheels then were much smaller, measuring around 36 centimeters (15 in) in diameter. Luders also said the skates could be used by anybody, irrespective of their physique. He himself was a large, heavy man, and he claimed he could use them for two straight hours without getting tired. Another version of wheel skates, appearing in 1923, had its tires on the inside of the foot rather than outside. (Other than the size of the wheels, the main improvement made by Chariot Skates is the small tire at the back of the bigger tire for increased stability.)
衡量散货大宗商品贸易的波罗的海干散货运价指数(BDI)已经触及历史低位。2014年超过美国成为世界最大贸易国的中国本月报告,1月出口和进口都出现两位数下降。正在经历一个多世纪以来最严重衰退的巴西从中国的进口暴跌。
n. 意识,知觉,自觉,觉悟
According to the Chinese Academy of Social Sciences, China's migrant workers account for around 50 percent of the labor force in industrial and related sectors. Yet they don't enjoy equal rights as city dwellers because of household registration requirements.
顺便说一句,伦敦的自行车租赁制度再简单不过了:走到任何一个租车点,刷卡付费就可以带走一辆自行车。当你使用完毕时,把车丢在附近的河里就行。这些自行车都是一次性的!

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

toggle caption
CDC

11月中国房地产价格继续下跌,因投资者把更多注意力从房地产市场转向股市。
俄罗斯总统普京说,无论谁在明年的美国总统大选中胜出,他都希望改善与美国的关系。

CDC

凯投宏观(Capital Economics)首席亚洲经济学家马克?威廉姆斯(Mark Williams)补充道:“我们预计,2017年新兴市场出口的表现将继续改善,出口值会同比温和增长。”
Rouslan Krechetnikov和Hans Mayer对液体的溅出现象进行了研究。他们考察的课题是:人们在端着咖啡杯走动时咖啡的溅出情况,给你个提示吧,在你走到第七步至第十步之间,咖啡最容易溅出。

我们要找的人通常不是国家领导人、轰动性的电影大片主演或畅销书作者。我们会把这些人留给本报的相应版面。我们的报道对象更有可能刚出狱,或刚写完第1547本小说。
不像这篇文章中其他的人造物品,人工胰腺并不处于前期研究阶段,这个装置确实存在,而且在今年9月份得到了FDA的销售许可
“This has been a miserable year for EM,” said Paul McNamara, investment director of emerging markets at GAM, the Swiss fund house. “There has been a steady bleed out of assets and no one is certain what shape the market might be in this time next week.”
May the glow of New Year candle fill your heart with peace and pleasure and make your New Year bright.

7.Yes, John was with me last night. – Because that’s what friends do… we agree and ask questions later。
Capsized ship righted
尽管此次维密秀备受期待,但似乎该内衣品牌在中国的首秀并没有完全按计划进行。
Statistics show global research and development expenditure grew at an annual pace of approximately seven percent before 2009, but slowed down to four percent in 2014

蓝天在未来不会也不应该成为奢侈品。
维多利亚的秘密内衣秀刚刚拉开华丽巨幕,今年的秀也是有史以来最奢华复杂的一次。
In fact, one ancient saying was, "ifyou have Kucha, only one percent of the states in the Western Frontiers remain unsubmissive."
[k?'min]
That pushed the state share of total investment for the year to date down marginally to 36.6 per cent, still the largest share since 2011 and reflecting the outsize role of government spending in sustaining economic growth during 2016.

●"Obama Signs Executive Order Banning The Pledge Of Allegiance In Schools Nationwide"
She is home-tutored alongside her younger sister Mackenzie, who also stars in the Dance Moms series and with whom Maddie released a fashion line called The Maddie & Mackenzie Collection last year.
3.The End of the One-Child Policy
它们汇聚为卷土重来的民族主义和仇外主义。
至少希拉里今年赢得了点什么。我相信她会非常兴奋。

学校获得的好处似乎显而易见:它们有了优秀的毕业生任教,否则这些学生将会直接进入咨询行业。
报告称,名校学生的创业意愿较低,或许因为创业机会成本高。
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。
或许纯粹是巧合,但Magento首位产品经理蒂姆o舒尔茨也刚刚加入Bigcommerce,出任产品管理高级副总裁。舒尔茨近年来担任谷歌Shopping Express、Wallet等服务的战略合伙和商业发展高管,未来将专注于Bigcommerce的一站式体验,将电子商务和实体零售更好地结合起来。“消费者想要无缝化体验,”他说。

Prof Cusumano sees all this as evidence that the company is opening up more, including in allowing developers to customise more of its iOS software.
[is't?bli?t]
Rounding out the top three is Chrissy Teigen, 31, who joins the list for the first time after raking in $13.5 million over the past 12 month-period.
It was the age of wisdom, it was the age of foolishness…
[ri'membr?ns]
但曼谷的吸引力也显而易见:充满生机、食物美味、毗邻一些世界上最美的海滩和岛屿。

n. 奇思妙想,一段楼
在2013年的这次调查中,东京重新获得“全球最贵城市”的头衔。瑞士苏黎士由于汇率波动在去年名列榜首,但今年由于政府采取了控制汇率措施,在榜单上下滑至第七。日本大阪成为全球第二贵的城市。
camp(n 田野,营地),aign名词后缀-营地-备战的地方

The infectious disease known as scarlet fever famously reached pandemic proportions in the 19th century, striking down the young and the weak across the Western world.
虽然她五个月之前才刚学会走路,但是这个被人们称作“宝贝碧昂斯”的小宝宝已经开始在各种盛会的舞台上展露风采了。
诺贝尔化学奖颁给了一位尝试制作世界上最小的分子机器的科学家。
"You can no longer have some countries go first and others come in later, because there is no more time," said Glen P. Peters, a scientist at the Center for International Climate and Environmental Research in Oslo, who helped compile the new numbers. "It needs to be all hands on deck now."
继在电影《007:大破天幕杀机》中,和丹尼尔·克雷格(Daniel Craig)演对手戏,饰演神秘的塞芙琳(Severine)一角后,这名法国女星第二次挑战以英语为主要语言的角色。虽然电影《007:大破天幕杀机》在北美洲的公映时间是11月9号,但它已经在国际范围内开始向票房纪录发起进攻。