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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

索菲亚回复业内猜测:将加大信息技术方面投入

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 福耀玻璃曹德旺“跑路”背后真问题:企业税收负担太高 the quarantine period, and its counterpart organizations do so abroad, all in concert with the World Health Organization.

n. 奖章,勋章,纪念章
‘Unfortunately, while the newest episode may be a fantastic addition to the Star Wars franchise, ‘starwars’ is a dangerous password to use,’ said Morgan Slain, CEO of SplashData, Inc.

哈佛大学的一项研究证明,随着年龄增长,饮食可能会对你的记忆力有重要的影响。妇女医院的科学家们在《神经病学记事》发表的研究报告指出,食用含有大量饱和脂肪酸的食物(如红肉和黄油)的女性比正常饮食的女性记性更差。虽然研究人员暂时没有发现记忆力和饱和脂肪之间的确切联系,但是他们猜测饱和脂肪酸也许对基因有那么些影响。

On the occasion of the New Year, may my wife and I extend to you and yours our warmest greetings, wishing you a happy New Year, your career greater success and your family happiness.
去年,酷热天气覆盖了阿拉斯加州和大部分美国西部地区。地面温度在所有有人居住的大陆上都创下了记录。科学家说,海洋表面在除南极洲附近海域以外的几乎所有水域中都异常温暖,为造成巨大破坏的太平洋风暴提供了能量。
Exports fell 6.6 per cent year-on-year in January to Rmb1.14tn, following a 2.3 per cent gain in December. Economists expected a gain of 3.6 per cent. It was the biggest fall in exports since an 8.9 per cent drop in July last year.
一定要展现自己过人的智慧,努力地表现出心神不定的样子。把那些社交技巧抛到脑后吧!
Everyone was hugely cheered that global greenhouse gas emissions were flat between 2014 and 2016, even though recorded global growth was OK. The trouble is that this wasn’t the improvement in global economic efficiency everyone celebrated, but just a slowdown in northern China. As this part of the world recovered its economic mojo in 2017, carbon dioxide levels began to rise again.
7. Flying Lotus “You’re Dead” (Warp) The new fusion makes no apologies for the old fusion, just a series of upgrades. As a producer, Flying Lotus values continuity as much as disruption, hazy beauty as well as jump-cut clamor. His suitelike reflection on death leaves room for irreverent wit — and, on “Never Catch Me,” one of the year’s best verses by Kendrick Lamar.
When a cup is placed on a dispenser, a magnet lifts to let beer flow in.
“我们一直用很高的标准要求自己”,库里赛后表示。“我们在第三节没有给他们防守端施加压力,草率地结束了我们的进攻并且给了他们机会。有很多需要我们继续提高的地方,当然,每个人都愿意在赢球的同时接受教训。”

"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

Lots of managers recalled extreme etiquette errors. The applicant
3.葡萄牙波尔图

sincerely
金球奖的独特之处在于其同时设置电影和电视奖项。而当地时间周日的这场典礼更是前所未有地模糊了二者的界限,大大褒奖了电视领域这一年来的出众表现。现已剧终的热门电视剧集《绝命毒师》(Breaking Bad)今年首次拿下金球奖,赢得了当晚最热烈的欢呼声。该片荣获剧情类最佳系列剧集奖,片中演员布赖恩?克兰斯顿(Bryan Cranston)荣获剧情类系列剧最佳男演员。
The Caixin-sponsored series is based on a much smaller sample of private companies than the official PMI reading, which focuses on larger state enterprises, and tends to be more volatile.
●"Man shoots off his own penis taking selfies with gun"

popul人民+ar…的→流行的
生活的起起落落
I give all my love to you this New year.值此佳节,献上我对你所有的爱。
他说:“目前为止,健身追踪器还不属于这类产品。但是下一代可穿戴设备有潜力跨越这个至关重要的里程碑。”
President Barack Obama won re-election to a second term in the White House on Tuesday, television networks projected, beating Republican challenger Mitt Romney after a long and bitter campaign。

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

n. 肩膀,肩部
The price of U.S. benchmark West Texas Intermediate crude, which is traded on the New York Mercantile Exchange, has been kept lower by problems transporting the oil to markets. Those troubles have eased recently, but Sabine Schels, head of fundamental commodity research at Bank of America Merrill Lynch, doubts the problems will disappear.

CDC

2. 《头脑特工队》,导演:彼得·道格特(Pete Docter)。
“I am so overwhelmed and elated that fur has been banned from London Fashion Week! Progress!” Faith wrote.

[str?uk]
While at least four engines tend to repeat from one year’s 10 best list to the next, only two of last year’s powerplants remain recognized for 2014, the Honda Accord’s peppy and fuel-efficient 3.5-liter V6 and the powerful supercharged 3.0-liter V6 featured in the Audi S5.
Will Trump trigger a trade war with China
如果美国汽车行业杂志《沃兹汽车》(Wardsauto)的专家最新编撰的最佳引擎榜单可作为一种指示,那么在当代轿车、卡车和跨界车的引擎盖下面正发生一场静悄悄的革命。涡轮增压、机械增压和柴油引擎——甚至还有一款电动发电机——主导了第20届年度十大最佳汽车引擎奖;根据《沃兹汽车》,这些奖项“表彰了杰出的动力系统成就、世界级技术以及那些帮助推动汽车销售的稀有发动机或者电力推进系统。”

6)乐意效劳:通过此句话的微妙提示所起的作用,可以使某一关键内容得到强化的效果。你乐意帮助别人。无论什么时候,他们需要你的帮助,你都在场。而且,你是乐意效劳的。
"People should just never walk away and leave their animals," Ms Lewis said. "Everyone has a legal obligation to look after animals in their care."
《胡润百富榜》的编制者胡润(Rupert Hoogewerf,见文首图)表示:“姚振华代表了中国金融投资创造财富的新浪潮。”
尽管看起来有着大量的目标核对工作,但在5月7日,中国驻贝尔格莱德的大使馆却被从美国空军B-2幽灵轰炸机上发射的五枚卫星制导联合直接攻击弹药击中。三名中国记者——新华社记者邵云环,光明日报记者许杏虎和他的妻子朱颖在袭击中身亡。另外20名中国公民受伤5人伤势严重。

谎言4:太感谢了!我很喜欢!说谎原因:告诉别人他们送的礼物一团糟会让我看起来像是冷血的混蛋。
I know this takes time, but it'll ensure you really know your stuff. And that's why you're going to school. Right?
总之,尤吉利用特伦斯-罗斯、贾里德-萨林杰以及三个选秀权换来了两名季后赛老兵。
New residential property prices in China grew faster in October despite a slew of restrictions on purchases,
9.Touchscreens

米其林(Michelin)、微软(Microsoft)、爱立信(Ericsson)等大企业的领导人已经把更多的决策权推向一线员工。随着这种方法的成功引起注意,其他企业将效仿。
As the unstoppable Nazi forces roll across Western Europe and the threat of invasion is imminent, and with an unprepared public, a skeptical King, and his own party plotting against him, Churchill must withstand his darkest hour, rally a nation, and attempt to change the course of world history.
Mr Talbot notes that regulators in Japan are encouraging fee-based sales with a new fiduciary code and other measures that will play to the low-cost appeal of ETFs.
“People are used to the Fed saying it will tighten but, in the end, with volatility or other risks on the horizon, policymakers take it back and it’s a case of if in doubt, stay on hold,” Mr Koepke says.
节目34 歌曲《家人》,谭晶

C罗巨无霸般的收入主要来源于两部分。一部分是他效力于西班牙豪门皇家马德里挣得的令人眼红的3850万英镑的年薪。另一部分来源于他为耐克、豪雅表和营养品公司康宝莱代言带来的总计2200万英镑的代言费。
自2008年北京奥运会后,北京入境游客数量持续增加。然而2012年这一数字下降了3.8%,并在去年进一步下滑。
与此同时,有一首非常有意思的歌曲来自我们的读者Libby Russell,是她为所有世界杯期间的足球寡妇所作。非常感谢Libby的分享,太棒了!
5.生物医学工程师

Suspecting that the water had been mixed with something harmful, Tang reported the incident to the class monitor and teachers.
No. Football punditry is a mug’s game. Better to have the benefit of hindsight. There have been 20 previous World Cups. Of those, Brazil (five titles) and Germany (four), are regular contenders. Home advantage helps, with host nations winning the trophy six times. But next year’s festival of football is being held in Russia, which has the lowest-ranked team in the tournament.
筹备IPO交易的公司正在增多,尽管今年在美国高调上市的Snap(旗下拥有Snapchat)表现不佳,同时投资者担忧欧元不断走强可能遏制欧洲企业的盈利复苏。
stylish
伦敦商学院课程的一个主要优势是学员来自地域广泛的不同国家。其2015年MBA课程学员的90%来自海外,来自大约60个不同国家。
但经济学家总体上预计,一旦飓风造成的失真消失,前段时间的趋势就有望恢复并延续。接受《华尔街日报》最新月度调查的45位经济学家预计,到明年6月,失业率将降至7.8%,2013年年底将降至7.5%。部分经济学家说,就业增长可能会摆脱现在的缓慢速度而加快。信安环球投资有限公司(Principal Global Investors)经济学家鲍尔(Bob Baur)说,我觉得到时候企业将必须招人。[qh]

“I am proud of my position as a boss, as a person that runs my own company,” Perry told FORBES for our Celebrity 100 cover story this past summer. “I’m an entrepreneur. … I don’t want to shy away from it. I actually want to kind of grab it by its b---s.”
《至暗时刻》
['kredit]

perspective
[?'s?u?ieit]
但他认为自己任教的经历非常宝贵,可以让他很快适应新的职业阶段。
The prince said authorities could recover as much as $100 billion in settlements.
8月,为了捍卫中国在全球经济中的制造业中心的地位,央行引导人民币作出数十年来最大幅的贬值。稍后,在国际货币基金组织(International Monetary Fund)把人民币纳入全球储备货币之后,人民币进一步贬值。这一现象可能反映了资本外流。