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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

城市住房制度长效机制平稳起步

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 浙江玻璃破产案尘埃落定 财产变价合计23亿 the quarantine period, and its counterpart organizations do so abroad, all in concert with the World Health Organization.

动物会根据美感做出选择。
The Caixin-sponsored composite PMI for November came in at 50.5, the first time it had broken through the 50-mark separating contraction from expansion since July.

Facebook CEO Mark Zuckerberg

Holly Hunter reportedly keeps her best actress award, which she won for her portrayal of Ada McGrath in the 1994 New Zealand film, The Piano, at the New York offices of Joel and Ethan Coen. It sits alongside the statue Frances McDormand won for her role as the heavily-pregnant local police chief with the insatiable appetite, Marge Gunderson, in the Coens’ 1996 film Fargo.
这两部纪录片都使用标准工具——资料影像、人物采访,悉心选择的音乐资料——在目前的紧张局势中书写历史。在“黑人的命也是命”(Black Lives Matter)的时代,关于黑豹党和爵士歌手兼行动分子妮娜·西蒙妮的影片确实意义重大。尼尔逊和贾巴斯精彩地讲述了他们的故事。
腾讯通过聊天软件QQ的渠道将用户吸引到它的网络游戏和网站上去。分析师说,类似的模式对于微信也有可能非常管用。他们也说,微信的“朋友圈”功能给它加进了社交网络的元素,有可能最终吸引到广告商。
The reason for its high valuation is based on the fact that it was the first time China Post released stamps featuring the Chinese Zodiac since the establishment of the People's Republic of China in 1949.
今年中国内地共有54所高校进入亚洲大学排行榜前300名。
第一架无线电操纵的无人驾驶飞机可追溯到1916年。英国发明家阿奇博尔德·洛设计并试飞了第一架无人遥控飞机。它是为了反攻德国齐柏林飞艇而制作的,在第一次世界大战中参与了对地面攻击的战斗。无人机由木和锡制成,它的机翼用的是其他双翼飞机的较低机翼。总的来说,无人机是有些失败的,因为它的引擎噪音干扰了无线操作。1916年,索普威斯飞松公司也尝试制作无人机,他们将无线电设备放置在无人机的尾部,这样引擎就不会干扰到它的信号。但因一次地面上的意外事故,他们的无人机再未起飞:当洛操作无人机飞到高级军官面前时,他原本计划会在1917年再次试飞无人机。但无人机从卡车的后面发射后,飞了一段时间便因引擎故障而坠毁,差点要了在场的军官的命。
When she consults managers, Kay says many of them suspect something is fishy when their employees stop talking to them as often, whether it's to give an update, ask for an opinion or just say hello. As Kay puts it: "You're not doing the things you normally would have to keep the relationship going."
Concerns about China’s economy have recently dragged down global financial markets, affecting prospects for the eurozone and many others. Such worries are one reason why the European Central Bank is expected on Thursday to unleash a new round of economic stimulus.

"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

用户说,语音信息的传输速度很快,可以在微信平台上对话。但和微软(Microsoft Corp.)的Skype等免费语音应用不同的是,在微信上还可以另选时间回复别人发来的语音信息。北京微信用户Robin Wang说,我可以决定什么时候回复,以及回不回复。
As this year marks the 10th anniversary of the iconic Italian director Michelangelo Antonioni’s death, up to 13 of his classics - from his debut feature Story of a Love Affair to the 1995 romance Beyond the Clouds - will be screened as an homage to the master.

So, what does that mean for oil prices in 2015? It is anybody’s guess, but here are the top five variables that will determine the trajectory of oil prices over the next 12 months, in no particular order.
7. Big anti-corruptionprograms will be accelerated. We expect to see increased prosecutions,from approximately 140,000 per annum today to more than 200,000 in 2014. Thisaggressive push for integrity and accountability will set the country on astrong new course. Success will become much more about what you know ratherthan who you know.
“…fell asleep.”
在牵手其他领域的精英这一点上,谷歌并非独家。今年早些时候,英特尔(Intel)便宣布与美国时尚设计师协会(Council of Fashion Designers of America,CFDA)和奢侈品零售商Opening Ceremony合作,设计智能手镯。时尚品牌汤丽柏琦(Tory Burch)也与Fitbit携手设计了与可穿戴技术创业公司Misfit Wearables的无线运动跟踪器Shine Tracker类似的吊坠与手镯。而苹果(Apple)也发掘了各行各业的人才,包括博柏利(Burberry)前任首席执行官安吉拉o阿伦德茨(担任零售主管)、伊夫o圣o洛朗(Yves Saint Laurent)前任首席执行官保罗o丹尼佛以及耐克(Nike)的前任设计主管本o谢弗。

No. This is possible, of course, but with luck, Mrs May has at least now ensured that the UK is not going to tumble over a “no deal” cliff in 2019. In December 2017, Consensus Forecasts’ prediction for the UK was of 1.5 per cent growth in 2018. Its forecasts for Japan and Italy were even lower, at 1.3 per cent. So the chances that the UK will have the slowest-growing economy in the G7 next year should be around one in four.
[k?mpi'tin]
现年22岁的劳伦斯是《饥饿游戏》电影系列的女主角,她还可能凭借在电影《乌云背后的幸福线》中的表现获得奥斯卡提名。
今年领跑美国股市的标普500公司的行业组合有些奇特,出现了一些令人意想不到的黑马。就算基金经理预见到了医疗保健行业今年将上涨27%,难道他们也能猜到公用事业行业将位列第二,上涨23%?不大可能。
珍妮弗?劳伦斯曾于去年凭藉《乌云背后的幸福线》(Silver Linings Playbook)获得金球奖,而今年再度登台领奖的她表示,获奖感言还是让她倍感紧张。

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

No.35 娜塔丽·波特曼娜塔丽·波特曼(Natalie Portman ,1981年6月9日-),出生在以色列,美国好莱坞著名女演员之一。她曾获得过金球奖,并获得奥斯卡奖提名。美国哈佛
The total amount of remittances, which is estimated to reach $450 billion in 2017, has risen by more than 50 percent in the past decade, IFAD said.

CDC

It shifts your kid's weight to your shoulders and core instead of your back.
当晚的最大赢家可能还要属主持人蒂娜?费和埃米?珀勒,这是两人第二次搭档主持金球奖颁奖典礼,且她们今年表现丝毫不逊去年,创下了1,970万观众的六年来最高收视率。金球奖颁奖典礼由好莱坞外国记者协会(Hollywood Foreign Press Association)举办,举办地点位于加利福尼亚州贝弗利山庄的贝弗利山希尔顿酒店(Beverly Hills Hilton)。

单词urban 联想记忆:
但“平均”讲的是以前的情况,不是未来的事实。乐观言论不会让牛市重启,新的警告声音也不会刺破旧的泡沫。周期有自己的生命,该上行的时候上行,该下行的时候下行。这是很自然的事情。
Robin Wigglesworth
Other high points for the school include being first for alumni international mobility, second for international experience and third for job placement.

在数年的停滞之后薪酬将会加速提升
The Fate of the Furious was the top-grossing foreign film, ranking second on the list.
贴近大自然。在桌上摆放一盆植物是振奋自己的一个好办法。
10月份的PPI环比上涨了0.7%,高于9月份0.5%的环比涨幅。

The details of her character are being kept under wraps.
新年英文祝福语大全Best wishes for the year to come! 恭贺新禧! Good luck in the year ahead! 祝吉星高照! May you come into a good fortune! 恭喜发财! Live long
莱昂纳多·迪卡普里奥和嘎嘎小姐在今年金球奖拔得头筹。
美国大学与雇主协会(National Association of Colleges and Employers)进行的一项新研究表明,48%的美国公司计划于2011年招募物流专业研究生。供应链管理人才稀缺的现象,恰恰印证了这一调研结果。
ex出,ceed走-走出去到美国学习-超过一般人

These larger screen sizes will put additional strain on iOS 7 and developers who will need to figure out how to adapt their apps to even more configurations. These additional formats will provide some exciting opportunities for applications as well, and we can anticipate that iOS 8 will contain many features designed to accommodate multi-screen design.
“维密”天使坎蒂丝·斯瓦内普尔位列2015全球十大美女榜第四。去年,这位南非美人是福布斯全球最吸金超模榜的第十名。在2010年、2011年和2013年《男人帮》杂志的“全球100位最性感女人”民意投票中,她分别位于第61名、第62名和第75名。此外,她还是《格言》杂志“2014全球火辣百人榜”的冠军。
在收入最高的大学毕业生中,科学和工程领域占据了主导地位,其中软件工程、生物科学和电子信息工程是最赚钱的专业。
最流行的整形手术包括双眼皮手术——通过减少上眼睑多余的皮肤来使双眼看起来更大,抽脂手术——运用高频声波来减肥,以及鼻子整形手术。
leakage

5. Biomedical engineer
This is second major English-language role for the French actress, who co-stars opposite Daniel Craig in Skyfall as the enigmatic Severine. The movie opens Nov. 9 in North America but already is shattering records internationally.
This post is in partnership with Entrepreneur. The article below was originally published atEntrepreneur.com.
6. A brand new human organ has been classified. Researchers have given the nod to the mesentery - an organ that's been hiding in plain sight in our digestive system this whole time. But that's only half the story, because we're still not sure exactly what it does.

塞舌尔
Were you late to work yesterday because you couldn't remember where you put your car keys? Did you completely forget about a coffee date last week with a friend and only remember when you got a text asking, "where are you?" Can you no longer remember the name of your favorite elementary school teacher? Memory problems impact just about everyone to a certain degree, but science suggests you might be able to improve your memory, as well as reduce the likelihood of Alzheimer's and dementia, by engaging in certain activities, eating specific foods, and using certain mnemonic devices.
Jules Pieri
Notable newcomers to the list include Cameron Mackintosh, the first theater producer to enter the ranks, WeWork's Adam Neumann and Miguel McKelvey and Pinterest's Ben Silbermann and Evan Sharp.
在大选结果公布后,罗姆尼竞选阵营暂时没有发表言论。
'东方之星'船体完全扶正

President Donald Trump is the nation's first billionaire president -- but he's not as rich as he used to be, according to the Forbes 2017 Billionaires List published last Monday.
['disk?:s,dis'k?:s]
Martin Wolf

单词calendar 联想记忆:
尽管小小年纪她的事业就取得了如此惊人的成就,但如果给自己的成就打分,且10分满分的话,玛蒂只给自己打9分。
*Writing for a Variety Series: “Last Week Tonight With John Oliver”
Democratic frontrunner Hillary Clinton says that if she's elected president, at least half of her Cabinet will be women.
n. 鼓励