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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

家居行业洗牌“剩者为王”,龙头公司齐挤“定制”风口

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 北京住建委:鼓励国有企业利用自有用地建设保障房 the quarantine period, and its counterpart organizations do so abroad, all in concert with the World Health Organization.

['vai?r?s]
She made several points in a note to clients Tuesday that struck me as new:

贝尼托.墨索里尼(Benito Mussolini)和阿道夫.希特勒(Adolf Hitler)就是煽动家变身独裁者的经典例子。

An international medical journal's retraction of 107 research papers from China, many of them by clinical doctors, has reignited concerns over academic credibility in the country.
identical
This way you can tell everyone to shut up and get out so you can go to your "mind palace".
赢家:湖人
Whatever the underlying cause, last year’s extreme warmth in the West meant that Alaska, Arizona, California and Nevada all set temperature records. Some parts of California essentially had no winter last year, with temperatures sometimes running 10 to 15 degrees above normal for the season. The temperature in Anchorage, Alaska’s largest city, never fell below zero in 2014, the first time that has happened in 101 years of record-keeping for the city.
This is the biggest question hanging over the global economy. And the biggest risk.
1. Bottoms Up Beer System
The top 10 Weibo celebrities now have a combined 40 million followers. One of the most famous online figures, Papi Jiang, already signed a contract for video ads worth a staggering 22 million.

"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

Sweden’s foreign minister, Margot Wallstrom, a proponent of a “feminist foreign policy,” opened up to Ellen Barry about her abuse at the hands of an old boyfriend when she was a young woman, something she had never said publicly before.
《火线警探》,FX,1月20日。副警长瑞兰·吉文斯(Raylan Givens,蒂莫西·奥利芬特[Timothy Olyphant]饰)与他的朋友兼天敌博伊德·克劳达(Boyd Crowder,沃尔顿·戈金斯[Walton Goggins]饰)之间爱恨交织的关系贯穿了整部剧,不管怎样,这个问题将在第六季,也就是最终季中得到最终解决。

This year, several professions geared toward serving the financial and health needs of an aging population made the top ten, says Lee, including audiologist, financial planner, and physical therapist.
继1958年瑞典世界杯之后,本届世界杯的场均进球数如狂潮般不断刷新。
Mr. Lyons took a casting of Ms. Swinton’s mouth and designed teeth to fit. Those were clipped on over Ms. Swinton’s real teeth. For Minister Mason, he came up with a quirky look but didn’t quite want it to be comical. He was, however, interested in adding a little bling. “There’s a little bit of gold on the left-hand side,” he said. “We used real gold to make the filling of one tooth. We did it to put more character into the character.”
transport

It makes piggybacks more comfortable.
2、《蝙蝠侠大战超人:正义黎明》
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继1958年瑞典世界杯之后,本届世界杯的场均进球数如狂潮般不断刷新。
今年的获奖榜单如下:

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

在去年11月29日,共计约有93万人参加国家公务员考试,同比下降了60000人。不过,提供的2.7万个招聘岗位则创下了新高。
There is a salary gap of nearly 22 per cent between male and female graduates three years after they finished their courses, $90,000 compared to $73,000. That gap had been 17 per cent whenstudents first graduated, so thisdifference has widened over time(see chart).

CDC

他说,“油价将波动上行。”
狼和狗有何不同?

We will strive to boost employment and business startups.
calend一天+ar表名词,“人,物”→日历
Thus it's rather a shock when you first encounter Nick D'Aloisio striding into London's Bar Boulud restaurant, firmly shaking hands and proceeding to outline his entrepreneurial vision. To imagine him in person, picture a Silicon Valley CEO blessed with an easy manner and 97th percentile media skills. Picture a guy who can confidently expound (while maintaining steady eye contact) on topics ranging from Noam Chomsky's theories to the science of neural networks to the immigrant mind-set to the Buddhist concept of jnana. And now picture this fellow trapped inside the gangly body of a British teen who might easily be mistaken for a member of the pop boy band One Direction-clad in a hipster T-shirt beneath a fitted blazer, hair swooping over his forehead, taking bites of a cheeseburger between bold pronouncements.
n. 设计者

The company realised that "it was all a mistake and that he did it without thinking," a Google spokeswoman said last Wednesday.
We've had the technology to artificially restore hearing for decades, but internal implants do nothing for the visible parts of the ear. You'd think those big flaps (“pinnae”) on either side of your head would be easy to replicate, since they're just skin and cartilage rather than complex organs. In reality, scientists have never done a good job with fake ears. Traditional replacements look and feel like plastic toys.
He failed to do so and Presti smartly moved on while he could still recoup some value.
《风流医生俏护士》首播时,鹰眼和诱捕者这两个角色原本同等重要,也正是在这样的条件下,韦恩·罗杰斯才同意扮演诱捕者约翰。然而,当艾伦·艾尔达开始对这个角色进行改动并对整个剧情走向产生更大影响时,鹰眼使诱捕者这一角色黯然失色。

At the same ceremony in New York, Dominic Barton, McKinsey’s global managing director, awarded the Bracken Bower Prize for young business writers to Christopher Clearfield and András Tilcsik. Their proposed book would look at how businesses can manage the risk of catastrophic failure. The 15,000 prize goes to the best proposal for a business book about the challenges and opportunities presented by growth by authors under 35.
新年可能平淡开场。但在中国不是这样,2016年中国股市的开局相当刺激,交易员们简直要窒息在泡沫中:周一沪市下跌7%,深市跌幅超过了8%。情况本来可能会更糟糕。一项在沪深300指数下跌7%时暂停交易的新机制让这场大戏提早落幕——就这次的情况而言,是提早了一个半小时。
他说,到1997-98年亚洲金融危机爆发时,美联储的回应已变得更加迅速,它退出了紧缩周期,担心东南亚的动荡会影响美国经济。
And regarding Ukraine, the Russian president again denied that there are Russian troops operating inside eastern Ukraine where a pro-Russian separatist movement is fighting Ukrainian government troops. But he said Moscow never denied that "certain people" were there carrying out tasks "in the military sphere." He said Russia plans no sanctions against Ukraine, but will not extend preferential trade to Kyiv.
Writing for a Variety Special: Patton Oswalt, “Patton Oswalt: Talking for Clapping”

Wheel skates look somewhat like regular inline skates, except that the wheels are much larger, up to the size of bicycle tires. They are seen as a cross between an inline skate, a ski, and a bike. Recently, a company called Chariot Skates said they had come up with something unique—the Chariot wheel skates. According to the company, wheel skates are "revolutionary new skating products." Revolutionary? They do at least revolve. New? No. The first wheel skate was made more than 142 years ago.
illegal
13. Even Better In October, The Los Angeles Times reported that the Equal Employment Opportunity Commission was investigating gender discrimination in the industry, just as the American Civil Liberties Union requested state and federal agencies do after it conducted its own inquiry.
GAINS AND LOSSES IN A CHANGING WORLD
她笔下的人物们觉得自己为了登上“美国梦”的山巅,经历了漫长的排队等候,但是上山的队伍放慢了速度,甚至停顿下来了。而那些移民、黑人和其他“外来者”似乎还在插队。

中国领导人会刺激国有经济。资助更多的扩张性增长项目,比如用以支持城镇化发展的基础建设的投资,包括大量的房屋、学校、公路等方面的建设。
作为历史上一种非常敏感的大宗商品,原油价格走势已连续三年保持波澜不惊,其背后的一大支持因素就是美国的页岩油。
在过去三年失业率已从8.6%降至5.8%,但是包括美联储,几乎没有人认为劳动力市场现在是真的健康。
Yes — just. Democrats will regain control of the House of Representatives in the November midterm elections. Though they will not take charge until January 2019, they will waste no time preparing the House Judiciary paperwork. Mr Trump will label it a “witch hunt”. But another year of his surreal presidency makes it all but inevitable Democrats will campaign on a pledge to hold him to account. Whatever Robert Mueller’s investigation unearths before then is unlikely to turn enough Republicans against him.

3.《绝望主妇》灵感来源于安德烈·耶茨案
这栋房屋坐落在街道上的一处小山丘上。房屋的入口处是一个大玻璃门廊,有砖砌的地面和对着湖的玻璃窗墙。翻修工程保留了花格镶板的天花板和原建筑部分大量运用的木材。其布局规划是开敞式设计,几乎每个房间都可以从观景窗看见湖景。
Song “The China Style”(Jiuyue Qiji)
该报告指出,代理商和投资机构的涌入导致世界第二大经济体的增长方式和平台发生了额外的变化。小米科技公司的投资人和创始人雷军、360董事长周鸿祎、中国首富王健林等众多互联网大咖都大力支持流媒体的网络直播,这强烈表明了投资网红经济的巨大利润。
Yelling at the screen to tell the female protagonist not to go downstairs alone at night will no longer be futile. In this interactive horror game, you control all the action. The story, which was crafted by filmmakers Larry Fessenden and Graham Reznick alongside game developers Supermassive Games, traps eight friends in a remote mountain getaway with a psycho on the loose. The game stars a Hollywood cast that includes Brett Dalton (Agents of S.H.I.E.L.D), Hayden Panettiere (Nashville) and Rami Malek (Need for Speed). Players will take control of each of the characters as they explore the creepy world and try to survive until dawn. No one is safe from death. And every choice made in the game will result in a different experience. The script was over a thousand pages long, opening up hundreds of different endings for players to explore. The Butterfly Effect technology ensures that no two games will be played the same. The one constant is that the game is scary. Don’t play this one alone or in the dark.
而传统主义者诸如乔治·克鲁尼(George Clooney),他因影片《逃离德黑兰》(Argo)获最佳影片奖以及在影片《辛瑞那》(Syriana )中获最佳男配角,他的奥斯卡奖杯放在家中的书房。达斯汀·霍夫曼(Dustin Hoffman)曾在1980年因影片《克莱默夫妇》(Kramer vs. Kramer) 、并在九年后因影片《雨人》(Rain Man)两次获最佳男主角奖,也将其奖杯放在书房中。

对气候变化持怀疑态度的人长期以来认为,全球气温已在1998年左右停止变暖,那年是20世纪最热的一年,原因是异常强大的厄尔尼诺现象。华盛顿的一些政客用这种说法作为不对温室气体排放采取行动的理由。
只跟那些能凸显你聪明的人做朋友,哪怕他们觉得你坏坏哒。
酒店和餐饮业高管薪酬均值增速最快,均为47.58%。

10.You are Stressed All the Time
A 14-year-old Chinese boy overcame two of humankind's most dreaded fears--getting stuck in an elevator and getting homework done, in a single night thanks to his quick-witted character.
几年前,有人发明了一辆会飞的自行车,叫做"Paravelo"。称一辆自行车会飞,并不是开玩笑,而是这辆自行车真的会飞(车头有一个巨大的降落伞)。它在陆地和空中的时速分别为25千米(15英里)和40千米(25英里),可飞至1200米(4000英尺)高空。最棒的地方是什么呢?那就是你不需要有飞行驾照。Paravelo号称世界上第一辆会飞的自行车,但我们必须指出它并不是第一辆会飞的自行车。
Gitanjali表示,她想要进一步改善改设备,这样它最终就能进入市场了。
Regardless of whether or not you think Snapchat is worth the $3 billion Facebook offered it, one thing is clear: There's an appetite out there for so-called ephemeral networks, where content literally vanishes seconds after being received. And, contrary to popular perception, this isn't just about sexting and X-rated selfies (though it definitely is about that, too). As content on the major networks becomes more corporate and commoditized, Snapchat and services like it restore some of the fun and spontaneity to social media. Just like a real-life interaction -- where ideas flow freely and you generally don't worry about everything being recorded for posterity and broadcast to the world -- SnapChat and networks like it offer a channel for genuine, unfiltered exchange. And the kids really like it. While Facebook's own CFO officially acknowledged last month that teen use of his network is declining, the number of teens on SnapChat -- at least anecdotally -- is exploding.