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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

上半年土地出让破万亿 热点二三线楼市成交翻倍

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 欧司朗出售通用照明业务 哪家合作最强? the quarantine period, and its counterpart organizations do so abroad, all in concert with the World Health Organization.

The app D'Aloisio designed, Summly, compresses long pieces of text into a few representative sentences. When he released an early iteration, tech observers realized that an app that could deliver brief, accurate summaries would be hugely valuable in a world where we read everything-from news stories to corporate reports-on our phones, on the go. The app attracted the interest of investors around the world, ranging from Hollywood celebrities to Hong Kong billionaire Li Ka-shing, the wealthiest man in Asia.
The "Quarterly Journal of Experimental Psychology" published a study in early 2016 entitled, "The drawing effect: Evidence for reliable and robust memory benefits in free recall." While the title seems a bit long and complex, the study actually demonstrated a very simple idea. Drawing words in picture form helps people make better and stronger memories. The authors of the study created simple tasks where a participant would first draw a simple word, like a common piece of fruit. Later, the authors of the study would ask the participants to recall the words they drew. Other participants in the study were given different tasks like repeating the given word aloud a certain number of times or actually writing the word down. The researchers found that participants who drew doodles of the words they needed to recall fared much better than other participants.

3所在这份榜单上叱咤多年的重量级学府——哈佛商学院(HBS)、伦敦商学院(LBS)和麻省理工斯隆管理学院(MIT Sloan School of Management)的排名下滑。哈佛商学院的排名下降两个位次,今年排在第四,这是这所位于波士顿的学府9年来首次跌出前三甲。伦敦商学院下滑3个位次,排在第六,为14年来最低。麻省理工斯隆管理学院的排名下滑至第13位,为10年来首次跌出前10。

In year-on-year terms prices rose in 65 cities and fell in five.
海莉·威廉姆斯依然是颇有影响力的重要存在,一位不论是低声哼唱还是大声呐喊都能令人信服的歌手。她直言不讳的勇气几乎使你忘记《欢笑过后》记录的是她对这个世界的厌倦。
此外,他们在毕业后改行的可能性更小。只有30%改行,而全日制MBA学员却有近三分之二改行。
9.Yeah, I was a badass on my high school football team! – Because I want to be seen by others in an even stronger light than I see myself。
['?p?reit]
The paperpot transplanter allows a single person to transplant 264 plants covering over 85ft in just minutes. What used to take hours, now takes minutes. Allowing you to spend less time transplanting crops, and more time doing other things like farm improvements, marketing, sales, or just taking some time off.
虽然周六欧锦赛中爱尔兰0-3不敌比利时,但这并没有让赴波尔多看球的爱尔兰球迷一蹶不振。
“The auction market is extremely selective,” said Henry Pettifer, the head of old master paintings at Christie’s, whose sale total had been dented by a 15th-century Flemish Madonna and child by Hans Memling that the auction house had sold privately for more than 3.5 million and had withdrawn from the sale. “The availability of fresh material is limited,” he added, alluding to how few museum-quality works are in private hands.

"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

2015年9月,当“防止虐待动物协会(RSPCA)”的检察员们打开这处位于南澳大利亚阿德莱德的房子时,他们发现了14只猫咪,其中13只已经死去,仅存的那只也瘦弱不堪。
Anxiety has been fanned by the build-up of corporate debt in emerging markets, which doubled between 2008 and 2014 and has been one of the fastest growing areas of the global bond market.

5月30日,日本南部海岸附近发生了强烈地震,使中国民众担心,继2011年后,类似海啸和福岛核电站熔融的大灾难会再次发生。不过,最后并没有出现人员死亡或重大损毁的报道。
If you outsource any or all of your content writing, you need to make sure your content is original. Paste content into Copyscape’s analyzer tool, and you’ll instantly know whether the content is original.
不要误以为最后时刻的风平浪静就意味着截止期限前的动作是平淡无奇的:
Piggyback riders are designed especially for small children and toddlers, to lessen the parents’ struggles.

He and his girlfriend wrote to each other when he was studying science, he said.They did eventually marry and have four children.
她说:“我实在太惊讶了,简直是受宠若惊。我想说的是这一年对于影坛女性是极不平凡的一年。各个奖项的角逐者的品格和演技都是那么出众,能够入选让我倍感骄傲。”
“他们说:‘我会奇怪她为什么在会议的时候低着头;我好奇她为什么不再兴奋地接过这个案子;我也会想她为什么一周有两天很早地离开,”凯说,“你在他们的脑海里引发了这些问题。”
韩云平称,去年质检总局组织了两次大规模的检查,涉及超过5300批的进口消费品,例如空气净化器、汽车刹车块、家用电器和服装等,其中超过1500批的商品不合格。
她和妹妹都是通过家庭辅导接受教育的。她的妹妹也出演了《Dance Moms》。去年,以两姐妹的名字创建的时尚品牌The Maddie & Mackenzie Collection问世。

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

Du Pont called himself “the Golden Eagle” and had a distinctive, eagle-like profile. The designers aimed to capture that profile while not creating a carbon copy of the real du Pont.
Europe fell into a debt crisis. Japan faced a natural disaster. Emerging markets, once the bright spots on the global landscape, lost their glow. Political crises from Italy to Egypt to Thailand raised the prospect of another round of global unrest.

CDC

节目4 小品《我要上春晚》,周炜 刘大成 石头 张尧等
《人物》评选的电影史上35位美人(1)

其它
Confidence and a good elevator speech can take any pitch to the next level. The first marketing any company experiences comes from its founder. Spend time learning how to share your vision without coming across as “salesy.” Don’t be afraid to ask for the sale, but remember: the client is always the focus.
Dachis says: Strong financial performance combined with a slew of new features made LinkedIn a magnet for positivity in 2012. Positivity like this could help the company move from stern business network to lively communications platform in 2013.
在本届达沃斯世界经济论坛(World Economic Forum)盛大闭幕会议上,与会者承认风险的存在,认为缺乏有效管理的新兴市场很容易受到危机冲击,但他们最终得出的结论是,前景是多年来最为光明的。

孙俪在剧中扮演女主周莹。虽然孙俪是1982年生人,但在许多观众眼中,她仍然成功塑造了一个可爱天真的少女周莹。
China’s outbound non-financial investment fell 40.9 per cent during the ten months through October, according to official figures, reflecting the enduring impact of strict capital controls.
OUTDOOR SPACE: The property is just shy of an acre and a half.
国内生产总值增长6.5%左右,在实际工作中争取更好结果;

我照顾好自己了吗?有时候,我们太过于关心他人从而忘记了去照顾自己。这很容易就把自己遗忘。
10. A bad marriage can lead to an early death
韩语用户设置的"你的出生地"猜10次就能成功破译的概率是39%。
意大利语piloto“划浆""的变体→飞行员,领航员
Having earned a living for the last four years while her contemporaries go to school every day, she has been forced to mature quickly.

与工商管理硕士(MBA)不同,管理学硕士项目针对的是尚未进入职场或者初入职场的人士。
挪威诺贝尔和平奖委员会星期五在奥斯陆做出这一宣布时说,这三位女士分享这次和平奖是因为她们“为女性的安全和女性全面参与和平建设工作的权利进行非暴力的奋斗。”
n. 光泽,上光剂,优雅,精良
当科比的身体长到了6尺6寸时,高中时期的他已经是一个相当中型身板的家伙。可以想象,在1996年,想抵挡住17岁的科比进攻就很难。我相信,这几乎是不可能的。
n. 粉底霜,基

This is the second year running that Peking University has reached the height of No. 2 university.
A review of our work in 2016
Likewise, if the 11 countries led by Japan left in the TPP manage to salvage a deal following the US exit that could provide some balance in the region.
如果你拼命工作还是入不敷出,你可能没的得到与你自身价值相符的酬劳。去找一份能够给你应有报酬的工作吧。

There will no longer be any legal obstacle to the implementation of a universal two-child policy, if the draft amendment to the family planning law is approved by the top legislature by Sunday.
《Trigger Mortis》于9月8日发行,先于10月26日上映的007新电影《(幽灵党(暂译)》(Spectre)。
adj. 概要的,简略的
The Big Bang Theory is not short on geniuses. Not only is the show about highly intelligent scientists, but cast member Mayim Bialik has a Ph.D. in Neuroscience. So it should come as no surprise that the cast would want to show off their intelligence and attention to detail. In Sheldon and Leonard's apartment, there's a large white board. The two roommates use the board frequently for everything from actual work that Leonard or Sheldon has brought home, or to decide whether to eat before or after the new Spider-Man movie.
让它具有一定的危险性,因为这也会让你的“华生”兴趣盎然。
许多人对此不屑一顾,《纽约每日新闻》采访到的一位营养师声称,黄金披萨中最昂贵的成分:厄瓜多尔进口黄金薄片缺乏营养价值。

China has continued to synchronize enterprises and institutions to raise the basic pension for over 100m retirees in 2017.
neglect
双语:明星纹身爱用拉丁语 粉丝追捧学语言

'The book is true to the character and keeps him as fans would want him, which is as the original hard-bitten guy,' he said.
但是,权先生警告年轻人在欲进行手术时应三思。
I am afraid to go out in the sun now because of the holes in the ozone. I am afraid to breathe the air because I don't know what chemicals are in it. 我现在害怕晒太阳,因为臭氧层出现了空洞。我现在害怕呼吸空气,因为我不知道那里有多少化学物质。
There are a couple of other picks in play this year. There's the Lakers pick to Philly (top-three protected), a Memphis one to Denver (top-five protected), and the infamous Sacramento choice to Chicago (top-10 protected) that Philly actually controls because Sam Hinkie will have revenge on us all.
It shifts your kid's weight to your shoulders and core instead of your back.