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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

浅析:LED照明灯具的耐压及应对措施

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 全民环保时代 瓷砖行业再不绿色就“黄”了 the quarantine period, and its counterpart organizations do so abroad, all in concert with the World Health Organization.

Treasury Secretary Jacob Lew announced the plans for the new redesign Wednesday. Lew said the Treasury Department will launch a social media campaign dubbed "The New 10" to solicit ideas on whose portrait should be chosen for the new bill, along with a series of public meetings. He will reveal his decision sometime this year.
Much of the boost in exports came from shipments to the US, which grew for the first time since March at an annualised rate of 6.9 per cent to $36.8bn. Among other destinations that swung back to growth last month was the the EU, shipments to which rose 5.1 per cent to $29.9bn, as did those to Japan, by 3.2 per cent to $12.2bn.

mold

普京在国际记者年度新闻发布会上表示,他准备和任何一位当选的美国总统合作。
国家统计局在发布最新数据的同时进行了解读,它将PPI连续上涨部分归因于煤炭开采和洗选业价格同比上涨15.4%,这一涨幅比上月扩大11.3个百分点。
The truth is, to shut our door to the outside world would not help China do its own things well, so China will continue to open to the outside world, with this opening-up being a gradual process.
俄罗斯把自己看作超级大国 -- 这在国内是毋庸置疑的。
9、邦德经历风险无数却总能死里逃生。当然,人物本身是虚构的。有意思的是,研究证明,肌肉男更皮实。实际上,肌肉不发达对男性来说,可能很要命。(可能就是发达的肌肉让他得以活命的吧,我怀疑他会死于心脏病或前列腺癌)。
6. Miranda Lambert “Platinum” (RCA Nashville) Ms. Lambert went from plucky upstart to glittery country royalty in next to no time, but with “Platinum,” her best album, she walks that line with breezy authority. By turns sentimental and profane, with an ideal ratio of gloss to grit, it’s a reminder of her irreducible strengths, and a dare to anyone who’d undervalue them.
已经60岁的微软老大净资产达到750亿美元,尽管比起2015年缩水了42亿美元,却仍足以傲视群雄。自2014年超越墨西哥首富卡洛斯·斯利姆·埃卢以来,盖茨实现了福布斯富豪榜榜首三连庄。
5. Geopolitical flashpoints.In the not too distant past, a small supply disruption would send oil prices skyward. In early 2014, for example, violence in Libya blocked oil exports, contributing to a rise in oil prices. In Iraq, ISIS overran parts of the country and oil prices shot up on fears of supply outages. But since then, geopolitical flashpoints have had much less of an effect on the price of crude. During the last few weeks of 2014, violence flared up again in Libya. But after a brief increase in prices, the markets shrugged off the event. Nevertheless, history has demonstrated time and again that geopolitical crises are some of the most powerful short-term movers of oil prices.

"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

清华大学位列第45名,是亚洲排名第三的高校。北京大学位居第57位。浙江大学排名第67位,本次是该校首次跻身该榜单100强。
当芬兰程序员Jerry Jalava 2008年遇到车祸,他面临双重悲剧。首先,他失去了他的手指,对于靠打字生存的人来说是个大问题。其次,他必须跟一个幽默感过剩的医疗小组打交道。了解了他的遭遇后,一位外科医生竟然提议Jalava应该出门去买个“USB手指驱动器”。

High and rising US rates may quickly become drivers of EM crises: such conditions may lead to higher borrowing costs in EMs, along with capital outflows and an unwillingness by the financial sector to take risks.
“The key thing about Friends is that it’s about people working out how they are going to live their lives — what kind of relationships are they going to have, what kind of job, and the difficulties of settling down,” says Mills to the Daily Mail. “You’re engaged in all those questions about escaping from your family, becoming an adult and working out what you want to be.”And that’s one of the key issues in the youth culture of the 1990s.
单词invigorate 联想记忆:
"某时,世界呈现给我们是相互分隔的,但是这些电影和电视作品让我们感觉世界是相通的,"美国电影学院的总裁兼首席执行官Bob Gazzale如是说。"美国电影学院奖表彰这些电影艺术家们,勇于挑战,让我们受到鼓舞,娱乐,又励志,最后让我们意识到,我们都有着同样的心跳,"

回顾历史,单场进球数最多的比赛出现在1994年美国世界杯(俄罗斯6-1喀麦隆)。24支球队在52场比赛中场均进球2.97个。
tracks
苹果(Apple)本周将考验客户的忠诚度、购买力以及对创新的热情,发布第一款售价高达1000美元的iPhone。
Yet expectations for the summit meeting on Tuesday are low, with no sign of any political breakthrough that would lead to more ambitious efforts. Scientists say emissions must peak within the next few years, and then begin to decline, if the world is to have any hope of keeping global warming to an upper limit that countries agreed on five years ago. So far, no plans are in place that would come close to achieving that.
《拉里·威尔莫夜间秀》(The Nightly Show with Larry Wilmore),Comedy Central,1月19日播出。威尔莫的主题喜剧秀将取代《科尔伯特报告》(The Colbert Report)在夜间11:30播出,这是深夜节目多样化的最新尝试。完全没有压力!

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

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!
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!

CDC

11月18日
The work suits Carlson who has been into singing and musical theater her whole life.

Stand: Whole Foods CEO John Mackey called for 'Conscious Capitalism'
The remains of the monarch -- depicted by William Shakespeare as a monstrous hunchback and often viewed as one of English history's greatest villains -- will now be solemnly reburied in the local cathedral.
bene好+fic做+ial表形容词,“有…的”→有好处的
《蝙蝠侠大战超人:正义黎明》将于2016年3月23日横扫各大影院。

10. 《结果》(Results),导演:安德鲁·布西内斯克(Andrew Bujalski)。
[k?n'tinju?s]
Two years ago, the AFI delayed voting on its year-end list to give critics a chance to see Star Wars: The Force Awakens, which it subsequently included on its list of the 10 best films of 2015. However, this year, the latest Star Wars film, The Last Jedi, which hits theaters on Dec. 15, was nowhere to be found on AFI's list.
[in'tennli]

华盛顿(市场观查者)—美国经济2014年迎来了自二战后最曲折的复苏而且年末能源方面又遇到了大的波折,但是2015年美国经济将披荆斩棘变得更好。
2. Livers grow by almost half during waking hours. New research suggests that livers have the capacity to grow by almost 50 percent during the day, before shrinking back to their original size at night. They are the only organ we know of that oscillate this way.
Dershowitz said this guidance was too vague to provide students with any real understanding of the school's expectations. "When you punish a student seriously without articulating standards, I think it raises questions," he said.
vigil醒着的+ance表名词,“性质,状况”→警惕
transportation

For Maddie Ziegler, from Pennsylvania, life couldn't be more different.
保罗·乔治,克里斯·保罗,卡梅罗·安东尼,戈登·海沃德,吉米·巴特勒,德里克·罗斯,保罗·米尔萨普,J·J·雷迪克,埃里克·布莱索,德怀特·霍华德……自去年以来,换了东家的球员名单还在不断增加。
con共同,duct引导-引导大家的行为举止
In October last year North Korean border guards attempted to shoot down some balloons, triggering a brief exchange of heavy machine-gun fire between the two sides.
这份榜单的四所英国大学分别是剑桥大学、牛津大学和伦敦大学和帝国理工学院。东京大学也位列前20名。

因为这里说的是BBC的夏洛克,所以你的华生不是真傻,只是用自己的方式展现智慧。他还有点不确定自己的性向(万一是直的呢)。
Speaking of his desire to make their relationship to be 'official', Lagerfeld once said: 'There is no marriage, yet, for human beings and animals… I never thought that I would fall in love like this with a cat.
3. 向他人学习。
创新对于推动竞争激烈的全球化世界的增长至关重要,2016年全球创新指数根据82个创新指标的表现对超过100个国家进行排名。中国从去年的第29名攀升至第25名,这也是第一次有中等收入国家进入前25强。

6. 制定计划。
《三生三世十里桃花》是唐七在2009年出版的一部网络小说。今年,这部作品被改编成电影、电视剧以及电脑游戏。
单词intelligence 联想记忆:
After working for half a year, the average monthly income for 2014 graduates is RMB3,487, a significant increase from RMB3,250 in 2013 and RMB3,048 in 2012.
comfort
These collaborations signal a moment where the cradle of innovation and the arbiters of fashion are finally embracing one another, says L2 research director Colin Gilbert. Style is not the only missing piece to the wearable puzzle, but it’s something to look forward to, Gilbert says. More than half of the report’s respondents want devices that feel more like jewelry while 62 percent would like more than wrist-worn devices.

8. 《疯狂的麦克斯4:狂暴之路》,导演:乔治·米勒。
The other sex toy apparently belonged to a Chinese imperial family.
The main culprit for the deceleration was food, though food inflation is higher than the overall index. Food prices were up 1.9 per cent in October, down from 2.7 per cent in September and 3.7 per cent in August. Non-food inflation ticked down 0.9 per cent from 1.0 per cent.

故事发生在1950年的伦敦,雷诺兹?伍德科克是一位知名缝匠。他挑剔的生活中走进了阿尔玛,她是一位充满主见的年轻女性,后来成为了雷诺兹的缪斯女神和爱人。
Two bedrooms are on the second floor, including the master, which is part of a suite with a fireplace, a walk-in closet and a balcony overlooking the bay. An office down the hall also opens to the balcony. The other bedrooms are on the third floor. One overlooks the bay through the pediment’s fan window.
9.微笑
普京对俄罗斯经济做出积极评价。他说,经济已渡过危机,至少渡过了危机的高峰。
Other high points for the school include being first for alumni international mobility, second for international experience and third for job placement.