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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

2016年灯饰价格战依旧惨烈 将进入微利时代

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 衡阳市政府撤销关于暂停执行限价通知 the quarantine period, and its counterpart organizations do so abroad, all in concert with the World Health Organization.

质检总局副局长梅克保说道:“各级质量监督部门必须加强质量监督、继续打击违法行为,从而提高产品质量、保护消费者的权利。”
一位新浪微博网友写道:“不敢相信这么多医生都在论文中造假。病人还能相信他们可以帮人治病吗?”

The US has the most universities of any country in the overall ranking, with 221 schools earning a spot. The countries with the next-highest numbers of schools in the ranking are China and Japan with 136 and 76, respectively.

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.
plat平坦+form形状→形状平的地方→平台,月台
如果你很卖命的工作并且给公司创造了价值,你本应该得到酬谢。如果你的老板在两年之内没有给你涨薪水,去申请吧。如果老板不同意,还考虑什么,走吧。
美联储退出购债计划的道路是否会经历坎坷?
Only 6.92 percent of Hawaiian’s flights arrived late during the past three years, almost twice as good as the runner up, Alaska Air — 11.27 percent of its flights arrived late.
The studio says it has taken the step because the boy declined to remove a YouTube video he published which promoted how to use the software.
All but one of the other top 10 categories reflected public fascination with celebrities. Teen pop sensation Miley Cyrus was in third place in the search rankings and television personality Kim Kardashianwas not far behind at fourth place. They were followed by Lady Gaga at No. 5, actress Megan Fox in seventh place, with Justin Bieber, American Idol and Britney Spears completing the top 10. The iPhone stood out as the exception, coming in sixth.
Suspecting that the water had been mixed with something harmful, Tang reported the incident to the class monitor and teachers.

"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

Sonneborn says he's been dismayed not only by what he sees as Trump's troubling decisions and juvenile moments but also by the president's response after a counterprotester was killed during the August white nationalist rally in Charlottesville, Virginia — which is what cemented Sonneborn's decision to seek office.
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。

The theories, yes, and also the bad statistics traditional economists use to mislead America: The worst offender, GDP is a narrow, misleading measure of America's long-term growth. And second, our obsessive focus on short-term numbers, daily stock closings, quarterly earnings, annual returns, is stunting America's long-term growth.
What the government should do is to send a resounding message of “yes” to the all law-abiding market entities, to flash the green light of going ahead to the hardworking entrepreneurs and innovators, and to seriously deal with all violations of laws and regulations by showing them a resolutely a “yellow card” of stern warning, or even a “red card” to send them out of the market.
为了尝试遏制煤炭消耗量的增长,中国正在可再生能源和核能领域投入巨资,但尽管付出了这些努力,中国迄今为止依然是最大的温室气体排放国。中国每年因化石燃料燃烧和水泥生产排放100亿吨二氧化碳,几乎是美国的两倍,但美国的人均排放量依然远远高于中国。
布雷克·格里芬的高中样子和现在相差不大。只要在高中版的格里芬上加一些头发,再增大他的肌肉,就变成了如今的格里芬。

One of the more notorious incidents was when Zhu Ling, a student at the prestigious Tsinghua University, was paralyzed when her roommate allegedly poisoned her with thallium in 1994.
The Big Tech backlash will spread to technology industry employees in 2018, as many question whether the work they do really is saving the world.
‘Homeland’ This Showtime espionage thriller seemed destined for irrelevance after Brody (Damian Lewis) was finally killed at the end of Season 3. Season 4 has so far turned out to be remarkably vital and exhilarating without him, this time by pitting Carrie (Claire Danes) against a beautiful, deceitful Pakistani intelligence officer, Tasneem, (Nimrat Kaur).
Following the devaluation in mid-August, the renminbi rallied in September and October. Devaluation resumed in November, however, and the renminbi closed at its weakest level in three months at 6.4082 to the dollar yesterday. “Since October many countries around China have experienced some capital outflow, and China has had its share,” said Xie Yaxuan, an economist at China Merchants Securities in Shenzhen. “The strengthening dollar is bound to cause some repositioning into dollar assets.”
“Our goal is to produce as many units as we can and, at the same time, make sure that we do it in a way that maintains and enhances the health of neighborhoods,” said Carl Weisbrod, the director of the Department of City Planning.

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

reflect反射;沉思+ion→反射;思考
As impressive as those saving gains might look now, they could easily be swallowed as rising rates of illness place a greater burden on society.

CDC

《星球大战:侠盗一号》预计2016年12月16日上映。
infinite

What’s more, a Fiat engine not only places among Wards’ top 10 for the first time, it’s for an electric motor, the 83-kW unit found under the hood of the diminutive 500e. Unfortunately the car is only sold in California, though market forces might convince the automaker to send it into wider distribution should gas prices gain spike up to the $4.00/gallon mark or above.
Will the BoJ tighten monetary policy
Both claim to represent the people against foreigners and traitors.
美国公司高管的薪酬不断上升,收入差距越拉越大。在这种情况下,看到一位不光关心自身收入的CEO不禁让人眼前一亮。9月份,联想首席执行官杨元庆宣布,他将连续第二年和大约1万名联想员工分享他的奖金,数额至少为300万美元。他做出这个慷慨决定的原因是这家个人电脑制造商的年度销售额创下了历史新高。据彭博新闻(Bloomberg News)报道,参与“分成”的联想员工获得的奖金大约相当于中国普通城镇就业者一个月的收入。

Although she has already reached astonishing levels of success for her age, Maddie only gives herself a nine out of ten in terms of her career achievements.
5. It's a dog's life for the British
The company advises consumers or businesses using any of the passwords on the list to change them immediately. Splashdata warned that even passwords with common substitutions like "dr4mat1c" can be vulnerable to attackers' increasingly sophisticated technology.
今年1月份CPI同比上涨1.8%,去年12月同比上涨为1.6%。不过该指数仍落后于北京方面“3%左右”的目标。

汇丰的报告表示:“总的新业务在以温和的幅度增长,这与10月份没什么不同。然而,11月的数据显示外国需求继续疲软,新增出口业务的扩张幅度是6月份以来最低的。”
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。
日前,美国一位母亲为她14岁的、因在视频游戏中作弊而面临指控的儿子,写信进行辩护。
The tension between Paramore's high-intensity hooks and withering lyrics explodes into fluorescent colors on After Laughter.
Similar trends have been seen at other Cup matches, though no polls were carried out previously.

6、《招魂2:恩菲德的骚灵》
vi. 谈话,讲述
“一带一路”战略:“丝绸之路经济带”和“21世纪海上丝绸之路”
A study published in the journal "Clinical Psychological Science" in 2012 showcased the power of self-imagination, which showed the technique could help people with impaired memories, as well as individuals with no memory problems. As with other studies of human memory, the scientists asked participants to remember a list of words related to certain personality traits. The participants were then asked to use a specific strategy to help them recall the words. For example, some participants were asked to remember one personality trait by thinking of a second word that rhymed with the trait. Other participants were asked to remember the definition of the trait while others were asked to engage in "self-referential processing" where they would think about the trait in a personal, self-reflective way.
Madison Marriage is accounting and tax correspondent

"过去,大熊猫很难进行圈养,但是经过成都熊猫基地和世界各地许多动物园的通力合作,人类已经攻克了这个难题。目前世界上已经有了将近400只人工大熊猫。" 马文如是说。
6. The 2012 Ig Nobel Prize for Literature
Girls Trip
在接下来几年里,大型住宅楼盘必须遵守第87号本地法(Local Law 87)——该法要求楼盘审核能源使用量,并保持系统以最高效率运行。住宅楼是纽约市最大的温室气体排放源,其排放量占总量的37%。“能源是一大热门话题。楼盘怎样提高能源效率?”管理着超过500处房产的FirstService Residential New York的总裁丹·沃泽尔(Dan Wurtzel)说,“如果运营预算的三分之一来自能源耗费,而现在你可以降低这块成本,那么上涨维护费的压力就减轻了。”

报告还显示,2012年以来,企业养老保险累计结余虽不断扩大,但可支付月数由2012年的19.7个月下降至2015年的17.7个月。
我是否在维持健康的人际关系?在你的生活中,是否有一段关系需要你额外的关注?你是否需要给某人平反?在如何对待他人这个问题上,努力保持清醒的头脑。
The reading is just below economists' forecasts but it's not altogether surprising. When the People's Bank of China unexpectedly cut interest rates last month, some analysts said the move was likely a pre-emptive one and that a spate of weak data was likely ahead. Well, here it is.
最令人兴奋地其实是交易期
adj. 剧烈的,严重的,严峻的,严厉的,严格的
Over 11 million new urban jobs, and a registered urban unemployment rate within 4.5 percent.

['infinit]
7) Let Me Play Devil’s Advocate: Looking for a subtle way to critique? Turn the conversation into an exercise where you’re a detached party performing a function: Poking holes in the logic and plan of attack. You use this strategy to stress test ideas without making the process personal.
Participants in the study were between the ages of 18 and 44 and were asked to run twice – with and without shoes. After completing their quick runs, researchers found that the heart rate and overall run speed of each participant had no effect on memory, but the presence of shoes or bare feet did. The researchers have hypothesized that the need to engage the mind while running barefoot to avoid pebbles or other impediments could have a positive impact on a person's ability to remember things. If you're an adventurous person, you might try taking a barefoot jog around the block before your next test or before you need to remember something important.

It's impossible to list every woman who's ever existed, this list obviously be restricted to women who've achieved a fair level of celebrity. These are the hottest women celebrities of 2015.
同时,调查数据还显示,榜单上前100名的学校,毕业生平均月薪较去年上涨了1818元,涨幅达到22.8%。
据哈佛大学校报报道,至少10名学生因在脸书私聊小组中发布“猥琐表情”而失去哈佛大学的入学资格。
新职员有望获得一个体面的成绩单——2.1甚至更高。尽管学历证书很重要,但Teach First也希望培养谦逊、尊敬他人和同理心等个人品质。该项目的申请数量是可提供职位的7倍。
On the a monthly basis prices fell by an average 0.5 per cent.