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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

北京最严家具排污标准:不换水性涂料就退出市场

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 佛山安家补贴最高400万元 the quarantine period, and its counterpart organizations do so abroad, all in concert with the World Health Organization.

If the bounce is minimal and transitory it will be clear that the structural shift is under way. I hope the companies which are over invested in expensive projects and countries still overwhelmingly dependent on oil and gas revenues are ready.
流行音乐界永远的一号叛逆者夏洛特·艾玛·艾奇逊带着一张出色又令人惊讶的混合专辑回归了。

The release of Apple's iPhone 6s and 6s Plus models in September led to record sales in China, which accounts for more than a fourth of the company's operating income. Apple, whose products are often viewed as status symbols in China, is in competition not just with its South Korean archrival Samsung, but with the increasingly popular Chinese smartphone makers Huawei and Xiaomi.

美与进化
jail
“D型人格”最先由荷兰蒂尔堡大学的心理学家Johan Denollet提出。他还设计了一个测试,帮助人们认识自己是否具有D型人格特征。
后来,通用汽车在1958年设计出一款无人驾驶汽车,其原理是:由线圈感知道路中所嵌入电线的交流电信号,并相应地调整方向盘。然而汽车确实能自主驾驶,但并不能称为第一辆全自动驾驶汽车,因为它必须依赖嵌在地面的电线。在日本的筑波机械工程实验室,津川和他的几个同事发明了世界上第一辆自动驾驶汽车。然而,德国工程师恩斯特·迪克斯被称为无人驾驶汽车的先驱。1987年,他发明的"极速",时速超过90千米(56英里/小时),行驶了大约20千米(12分钟)。7年后,他发明的VaMP,不但可以识别道路标记,而且能定位自己在车道内的位置,还能勘测其他车辆,甚至能判断何时该变道。一年后,他和他的团队发明的自动驾驶汽车,从德国行驶到丹麦,最高时速为180千米(111英里/小时)。整段旅程中,仅有5%左右的路程是人为驾驶。
根据国内领先的求职平台前程无忧近日发布的一份关于2016年应届毕业生的研究报告显示,52.11%的高校毕业生已找到工作或自主创业。
在实验中,参与者们被要求回忆一些他们在实验开始的时候看到的图片,其中,一半参与者在回忆之前进行了举重训练,另一半参与者没有进行这样的高强度活动。他们发现,参与了举重训练的人在记忆能力上有所提高。这项研究实现了运动研究上的独辟蹊径,其他研究的研究对象多是对有氧运动本身,研究时间跨度长达数,但是这项研究的研究对象却是人类记忆,在研究时也仅仅是要求参与者们花一点时间举重而已。研究人员证明了其实提升记忆力并不需要数个小时的锻炼。下次再有谁让你去举重或者去健身馆锻炼的话,你大概会想感谢他一番的吧?
Create a mood board for inspiration, including quotes and pictures that will invigorate your creative juices. You might even want to change it up once and a while if you have a major project due or need fresh ideas. Art or wall décor can also add a creative touch to your workspace. We recommend the 3 in 1 Board, $19.95, at CB2.com (pictured above).
6.Put people first

"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

n. 港口,避难所,安息所 v. 安置 ... 于港中,
科学家表示,全球变暖加上强大的厄尔尼诺气候事件,令2015年成为自19世纪现代记录开始以来最热年份。科学家还警告,今年地球可能会更热。

Four government agencies including the commerce ministry and the central bank said in December they would apply tighter scrutiny to "irrational" outbound deals including real estate, hotels, movie theatres, entertainment assets and sports clubs.
Mazda wins the award for Best Car Brand. The automotive press has always loved Mazdas for their performance, but the Mazda cars on the road today earn positive reviews for their well-made interiors as well as their athletic driving dynamics. The 2016 Mazda3, pictured here, is in the top tier of the U.S. News compact car rankings, with most car reviewers recommending it for its nimble handling, strong acceleration and upscale interior.
Please accept my season\'s greetings.
有趣的是,金砖国家减持美国政府债券之时正值美国经济活动缓慢回升之际。

圣加伦大学校友的薪资排名第三,为114449美元(按购买力平价调整后),排在艾哈迈达巴德的印度管理学院(Indian Institute of Management)和印度管理学院班加罗尔分校(IIM Bangalore)之后,这两所商学院校友的平均薪资分别为116476美元和116094美元。圣加伦大学还在职业服务质量方面排名第一。
当然,影片中最惊人的一幕是外星人遇到一个涉世不深,外表因为多发性神经纤维瘤而丑陋的年轻男子,由亚当·皮尔森扮演。格雷泽带来的这一幕是全然无畏而且毫无感情波动的,或许这是从大卫·林奇的《象人》这部影片的主题变化而来。外星人并不会在本质上区分这位年轻男子的长相,但是她与这位男子相遇——两个外星人的遭遇?——触发了危机,使得她成为了猎物,而不是猎人。
smiles and puma snarls
近期,对中国经济的担忧拖累了全球金融市场,影响了欧元区和其它许多经济体的前景。这种担心是欧洲央行(ECB)预计将在周四启动新一轮经济刺激的原因之一。
During your early years wasthere anything that inspired or sparked your imagination to start writing theway that you have done so far?

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

莱昂斯做出斯文顿的口腔模型,依照它来设计假牙,把假牙安在斯文顿的真牙上。他为梅森部长设计了一个古怪的造型,但并不想让它太滑稽。不过,他还有兴趣加上一点闪亮的东西。“左边有一点金子,”他说,“我们用真金做某个牙的填料。这样做是为了让这个人物更有个性。”
《小可爱与拳击手》(Cutie and the Boxer)几乎没有受到观影公众的注意,但好电影名单并非票房大片的罗列。这部达到正片长度的纪录片是扎克利?海因策林(Zachary Heinzerling)的处女作,其影响与感悟同样出色。表面上它只是讲述了一段勉力维持了40年的问题婚姻。然而在表面之下,又惊人地暴露出来的是一段有关竞争(夫妻双方都是艺术家)、怨恨、不情愿的奉献以及持久的爱(这是最让人震惊的)的历史。

CDC

US News also offers subject-focused rankings, which include popular fields such as computer science, economics and business and engineering.
n. 奖章,勋章,纪念章

Facebook的品牌价值增长44%,该公司增加了新的功能,包括平安信使(Safety Check),让用户迅速通知家人和朋友他们是安全的。Elspeth Cheung表示,这些创新提高了这家媒体集团作为一个不可或缺的全球联络媒介的重要性,同时增加了其对广告商的价值。
“我们会根据天气谨慎考虑投送的时间和地点,但这些都不会公开,”脱北者Park Sang-Hak说道,他曾经领导过一系列的气球投送运动。
When the cup is lifted and removed from the dispenser, the magnet seals the bottom and the drink is ready to be enjoyed.
Cnzz.com的报告说,目前中国3.38亿网民中有将近三分之二都是网络游戏玩家。报告说,中国网络游戏行业目前占据了互联网经济总规模的半数以上,在未来还将以每年20%的速度增长。

但科学研究和技术服务领域企业的高管薪酬却下降了4.2%。
?大雪已经降落在西弗吉尼亚州,在韦伯斯特斯普林斯雪的厚度达到17英寸。国家气象局警告说更多的雪还在路上。
新美国基金会(New America Foundation)高级研究员李?德鲁特曼(Lee Drutman)在一份给Vox的分析文章中指出,在阿肯色州、北卡罗莱纳州和田纳西州,移民人口是1990年的三倍以上。围绕这些变化产生的焦虑或许可以解释共和党为什么在这个阶段更关注限制移民问题,还有这些州的白人投票者们何以压倒性地支持特朗普。
The Harry Potter star Emma Watson hold fifth position in the list of ten most beautiful women of 2015. The English actress, model, and activist, Watson took the top spot on the AskMen “Top 99 Outstanding Women 2015″ list and at number 26 on the TIME 100 list of the world's most influential people.

In 2011, at age 15, D'Aloisio closed a seed round of funding from Li Ka-shing. A year later, Summly launched, and within a month it had attracted 500,000 users and became the number-one news app in 28 countries. The Yahoo! sale capped off a remarkable run for someone not yet out of high school. But it's not mere technological savvy that sets D'Aloisio apart. Since long before he could shave, he has been driven by an intense curiosity and a desire to make some sort of mark on the tech world. Not just to create but to build and, yes, to monetize.
Wuxi, in coastal Jiangsu province, retained the top spot for a second month with growth of 4.9 per cent,
The average monthly salaries for grads in law, engineering and medical majors are 5,545, 4,512 and 4,500 yuan respectively, slightly down from last year, while graduates with educational and agricultural majors are offered lower pay, at 3,258 and 3,184 yuan respectively.
公司:儿童用品公司BooginHead
First, says Tom Kozenski, a supply-chain expert at consulting and training firm RedPrairie, most people still think of logistics -- if they think of it at all -- as a "non-sexy" field centered on boring, low-paid warehouse work.

“见风使舵!”“谄媚迎合美国人!”官方入选名单一经宣布,负面评价如潮水般汹涌而来。电影节上影片使用英语对白的导演不在少数,包括了意大利的马提欧?加洛尼(Matteo Garrone)和保罗?索伦蒂诺(Paolo Sorrentino),希腊的欧格斯?兰斯莫斯,挪威的约阿希姆?提尔(Joachim Trier),甚至包括法国的纪洛姆?尼克乐(Guillaume Nicloux)。法国有着对英语威胁极其敏感的文化情结。有一个观点认为,戛纳应该是世界电影的天堂,而英语电影的天堂已经有了,就是好莱坞。但这有意义吗?在戛纳电影节上,除了法语或英语影片,其他影片都是双语字幕--这是个巨大的工程。
5. Constantly take action.
发展最迅速的初创公司往往具有全球化的视野。未来一年,美国总统特朗普已经实施的移民限制,以及英国作为退欧的一部分而在考虑的限制措施,可能会对企业招聘形成障碍。
历届“邦女郎”性感比拼
6. Untitled Detroit Riots film

BEST THROWING TOYS OUT OF PRAM
The Raptors entered February as the team that most needed to make a move: their hot start was fading, their defense wasn't up to snuff for a contender, they had a massive hole at the four, and they felt added urgency to make the most of Kyle Lowry's prime in advance of his upcoming free agency.
女士们、先生们,欢迎来到2016年没礼貌大奖颁奖典礼。
2.Namibia

与此同时,还有其他因素在掣肘亚洲ETF市场,一些怀疑者担心,这些因素将阻碍散户市场的发展。
这项发明是伟大的,但也是愚蠢的。”这个开瓶器号称是“世界上第一个智能开瓶器”,但它不是突破性的。这个开瓶器能在你开酒瓶的时候通过短信发消息通知你的好友,这很疯狂,对吗?
It was 8.9% in 2015 and 9.9% in 2014. The expenditure accounted for 2.11% of last year's total GDP, compared with 2.06% in 2015.
弗兰西斯麦克多蒙德在这个黑色喜剧故事中扮演一位悲伤的母亲,展现了出色的核心表演。
n. 行为,举动,品行
China becomes the first middle-income country to join the ranks of the world's 25 most-innovative economies, according to the Global Innovation Index (GII) released last Monday.

7. Am I working too hard? Taking time to re-charge and spend time on activities that make you happy is so important. Honor your desire to pull back from work or school pressure when needed and give yourself time to breathe, even if it’s only for a few minutes at a time.
总部位于芝加哥的竞争对手科尔尼(AT Kearney)也在为领导层变动做准备,计划于2018年第一季度投票决定接替约翰奥利格(Johan Aurik)的人选。管理合伙人最多担任两个任期,而奥利格已经期满。预计他的继任者将专注于让科尔尼做大,摆脱中等规模参与者之列。
It is interpreted that in general, college education facilitates a long-term income advantage.

据第三方市场情报公司IDC日前公布的数据显示,去年中国智能手机制造商华为、OPPO以及vivo的年出货量大增,使得三家企业都成为了世界前5大智能手机制造商。
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.
这种成功的感觉本身也可以带来一种身份认同。
Harry Potter fans, it's time for another movie. A prequel to the Harry Potter films, Fantastic Beasts and Where to Find Them follows the adventures of Newt Scamander in an ancient New York. It is based on the Hogwarts textbook in Harry Potter by the same name.
‘Our hope is that the Worst Passwords of the Year list will cause people to take steps to protect themselves online.’