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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

北京将启动百项环保技改 家具建材企业首面治理

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 京首套房贷款利率八八折成主流 中介多有最惠通道 the quarantine period, and its counterpart organizations do so abroad, all in concert with the World Health Organization.

It shifts your kid's weight to your shoulders and core instead of your back.
一封投递给美国某位大学生的、来自于其曾经的未婚妻的情书现在终于上路了,虽然这封情书写于1958年,整整迟了53年。

愿新年的快乐一年四季常在。

雷军表示:“这是一个使我震惊的消息。作为一名围棋的忠实爱好者,我从来没有想到人工智能在当前阶段可以击败一个人类冠军,因为这是一项非常复杂的棋类运动。”
While the currency exchange limit has not changed, individuals are now required to disclose specific details on how they will use the funds. Funds can only be used towards current account spending such as tourism and shopping, overseas study, foreign medical care and consulting services. Real estate and other investment spending are explicitly forbidden.
单词criminal 联想记忆:
10. 米歇尔?詹尼克(澳大利亚跨栏运动员)
turkey
5.匈牙利德布勒森
The projects will also cover infrastructure programs such as new connections between Tongzhou and downtown Beijing, sewage and waste water disposal, and energy facilities. Cultural projects will be carried out to provide more employment opportunities, as the construction proceeds on a Universal Studios theme park and a training facility for the National Center for Performing Arts, Lu said.
vi. 打结

"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

deputy
从化石燃料转向可再生能源,无疑是我们这个时代最重要的工程挑战和科学挑战。

tox毒,ic-有毒的
When I find myself wanting to shout “No!” to an opportunity, that’s a sure sign to me that the answer should probably be “Yes.” So, I take a deep breath and analyze the situation as objectively as possible.
In the three years after the death of Steve Jobs, Mr Cook, 54, has held his nerve through attacks from activist investors and a loss of faith among some that Apple could succeed without its late founder. This year has seen Apple’s chief step out of the shadows of his predecessor and imprint the company with his own set of values and priorities: bringing in fresh blood, changing how it manages its cash pile, opening Apple up to greater collaboration and focusing more on social issues.
这确实是的。不过费城队近年来如此努力地垫底的一个被忽略的好处是:他们是如此地烂,以至于这会让其他竞相垫底的球队产生挫败感,因为他们很难做到和76人一样烂。在76人面前,小牛队至少只能算是中等水平的烂。

One difficulty in assessing the potential for ETFs in Asia, say experts at the largest asset management houses, is both the disproportionate size of the Japanese market within the region and the role played by the Bank of Japan, which distorts the market as it buys ¥6tn ($54bn) of ETFs a year.
The Florida Project
这封信件在十天以前神奇般的被寄到了加利福尼亚大学的宾夕法尼亚州分校,这所大学位于宾州的东北部。寄给Moore先生的这封信是1958年2月20日的信件,上面还写着“永远爱你的Vonnie”。
完成家庭作业,阅读指定的内容,以及其他的事。在网络上查找关于你的学习主题的内容,在图书馆看看书,再看看还可以学到哪些关于主题的内容。
Lawrence’s 2016 earnings dropped 11.5 percent from her 2015 total of $52 million. Forbes will release its list of the world’s highest-paid actors on Thursday. Last year Robert Downey Jr. topped the list with an estimated $80 million.

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

The Office for National Youth Campus Football said that China already had 13,381 "special football schools" as of 2016, and 69 counties are piloting programs for football in schools, the Xinhua News Agency reported.
Gitanjali向《商业内幕》透露,她的发明是受到了密歇根弗林特市丑闻的启发,该地的官员们正面临着指控。

CDC

Best Companies rank: 1
A fallen tree blocks a street in Washington, DC, on Tuesday.

单词polish 联想记忆:
adj. 易坏的,脆弱的,浅薄的 n. 复写纸,薄纸副本
Quanta Computer, ” in October. Samsung is also reported to be working on a 12 to 13-inch tablet, and it seems evident that “these large-size tablets will greatly impact ultrabook demand.” This “iPad Max” will be a defacto laptop with the addition of new cases with integrated keyboards and batteries and could well become a mainstay for high schools and college students who need better content creation tools than thos offers on existing iPads and iPad Minis.
不过,中国的手机制造商却在2016年实现了崛起。华为出货量同比增长了30.2%,达到了1.393亿台,再次排在全球第三。

8.Kate Upton
丽萨斯通
Commodity-linked sectors have been especially hard hit in recent months. Mining-sector earnings tumbled 23 per cent last year. Oil and petrochemical refiners also saw profits slammed. Despite the fall in crude prices, many refiners remain subject to crude prices agreed to before the recent price drop, even as prices for their output fall.
Zhang Guoli to host 2014 Spring Festival Gala

Yet institutions matter, too, because they set the rules of the game.
东道主的对手阿根廷队在此次世界杯中也有很大的机会。一支以梅西为主的队伍都会在最后大放异彩,但是当你在队伍中增添类似塞尔吉奥·阿奎罗(Sergio Aguero)、冈萨罗·伊瓜因(Gonzalo Higuan)和埃泽奎尔·拉维奇(Ezequiel Lavezzi)这样的队员的话,那么它将是这届世界杯上最具有进攻打法的球队了。同理,乌拉圭的进攻三人组——路易斯·苏亚雷斯(Luis Suarez)、埃丁森·卡瓦尼(Edinson Cavani)以及迪亚戈·弗兰(Diegol Forlan)同样拥有同等的实力,能对世界上任何一支球队比赛时进球,不过,他们所在队伍中其他人的实力是否足够强还让人存疑。
3. 捷蓝航空(JetBlue) 品牌喜爱度:40%/排名:218
Housing started last year on a high note. It ended the year facing mounting worries about higher interest rates, supply constraints, tight credit and a host of other problems.
Rose Wang

单词adolescent 联想记忆:
SAN ANTONIO DEL TACHIRA Venezuela (AP) — More than 100000 Venezuelans some of whom drove through the night in caravans crossed into Colombia over the weekend to hunt for food and medicine that are in short supply at home.
The research comes at a time of increasing anti-China rhetoric in US politics, and ahead of three politically sensitive anti-dumping cases this summer against Chinese steel imports that could result in the US imposing punitive duties of as much as 500 per cent.
明星大撞衫 看谁更好看(二)
另一方面,2月PPI同比下降4.9%,低于1月5.3%的同比降幅。2月PPI降幅为8个月以来最低降幅。

坚决打好蓝天保卫战。
The Belty is great that it uses technology to track fitness, water intake, and posture, but for $395, you might be better off getting the same in a stylish smart watch or activity tracker.
navigation
“我首要的使命、首要的责任是忠实于这本书的原始感觉,忠实于伊恩·弗莱明:他的作品、他的世界和他的构想。

在苏富比的拍卖会上,有少数几幅作品的拍卖价格远高于预估价,比如德比的约瑟夫·赖特(Joseph Wright of Derby)1780年的一幅风景画,它描绘的是奥古斯都大帝的女儿朱莉叶(Julia)被流放到萨莱诺湾(Gulf of Salerno)的一个洞穴里。
报告同时也显示,双十一已经成为由淘宝,天猫,京东领衔的电商的最大购物活动。
However, the figures suggest that the pace of Chinese investment in western economies may be slowing.
Nine provincial-level regions' GDP exceeded 3 trillion yuan in 2016, three more than the year before. The number of provincial-level areas with GDP surpassing 1 trillion yuan in 2016 remained 25.
每到仲夏时节,这家企业数据存储公司就会通过举办“狗狗节”来提升士气。员工此时可带着自己的宠物上班,欣赏宠物商品展销会,当地的宠物美容师、宠物商店老板以及驯兽师都会参展,还可以观赏狗狗才艺表演。在“狗狗节”前一周会有一场彩票抽奖活动,全部收入都将捐献给当地的动物慈善机构。
Even if Asian countries introduced regulation similar to that of thriving ETF markets elsewhere in the world, there are other hurdles. Mr Montanari says, for example, that most products presented to Asian investors relate to equities in their domestic market so the ETFs are not being used to give investors local exposure to foreign markets.

美国银行集团
Rk&*IPgK1cOe4+
A reckoning could come next year as the state and city attempt a crackdown on renegade hoteliers while the online company Airbnb lobbies for a change to the law. “You are going to see an increased push to regulate this,” said Samuel J. Himmelstein, a lawyer who represents tenants.

The data was released by the National Bureau of Statistics on its website, saying the growth rate rebounded for the first time after a four-year straight drop.
担忧是围绕向下流动(downward mobility)和文化变迁,而愤怒是针对移民和冷漠的精英。
但是,这些进展也指向美国和欧盟在利用此类案件上的巨大差异,欧盟目前正在讨论是否要赋予中国世界贸易组织(WTO)框架下的“市场经济”地位——这一让步会使对中国提起反倾销案变难。
马丁沃尔夫(Martin Wolf)
4. OPEC’s Next Move.OPEC deserves a lot of credit (or blame) for the remarkable downturn in oil prices last year.While many pundits have declared OPEC irrelevant after their decision to leave output unchanged, the mere fact that oil prices crashed after the cartel’s November meeting demonstrates just how influential they are over price swings. For now OPEC – or, more accurately, Saudi Arabia – has stood firm in its insistence not to cut production quotas. Whether that remains true through 2015 is up in the air.