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COVID-19 Nasal Swab Test Does Not Cause Risk of Infection


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对于在泥潭里挣扎的球队,有一样建队过程中关键的东西一直诱惑着他们,那就是建队计划。
年龄:45岁
停战日在1938年成为美国的正式节日,但在1954年改称退伍军人节。当时是第二次世界大战和朝鲜战争结束不久。退伍军人节跟每年五月最后一个星期一的阵亡将士纪念日不同。

Full Story

To help control the spread of COVID-19, the Centers for Disease Control and Prevention has recommended getting a COVID-19 test for people who show symptoms of the disease, have come into contact with someone known to have the disease, or are in vulnerable groups. 

The most common form of testing for the novel coronavirus involves the use of a nasopharyngeal, or nasal, swab. The swab reaches deep into the back of a person’s nose and mouth to collect cells and fluids from the upper respiratory system, which can then be checked with diagnostic tests for the presence of the novel coronavirus known as SARS-CoV-2.

The testing procedure involves inserting a 6-inch-long swab into the cavity between the nose and mouth for 15 seconds and rotating it several times. The swabbing is repeated on the other side. The swab is then inserted into a container and sent to a lab for testing.

Dr. Shawn Nasseri, an ear, nose and throat surgeon based in Beverly Hills who has conducted many COVID-19 swab tests, told us in an email that the nasal swab “follows the floor of the nose and goes to where the nose meets the throat, or naso-pharynx.”

Asked if the swab test is safe, Nasseri said, “Absolutely. The biggest risk is discomfort. The rare person — 1 in thousands — passes out from being super sensitive or gets a mild nosebleed. It’s estimated that close to 40 million or more swabs have been performed safely in the U.S. alone.”

But in recent weeks, viral posts on Facebook falsely claim that the nasal swab test can cause serious health issues. One post says, “The stick deep into the nose causes damage to the hamato-encephalic barrier and damages endocrine glands. This test creates an entrance to the brain for every infection.”

The hamato-encephalic barrier, also known as the “blood-brain barrier,” protects the brain from toxins that could be present in the blood.

Dr. Yvonne Maldonado, a professor of epidemiology at the Stanford University School of Medicine, told us in an email that the Facebook claim “is not true.”

之所以会出现这一较低读数,是因为产量因素出现了下跌——尽管前瞻性新订单因素连续第6个月上升。
“我们的人口和就业正处于历史高位,并在不断增长。这给租金和房价施加了很大压力,”纽约大学富曼房地产及城市政策中心(Furman Center for Real Estate and Urban Policy of New York University)的主任马克·威利斯(Mark Willis)说,“现在没有理由认为这些趋势可能发生改变。”

Nasseri said that “it is incredibly implausible, if not impossible, to cross the skull base and blood-brain barrier with a swab unless someone uses a rigid metal instrument and is pointing the metal object 90 degrees in the wrong direction.”

Dr. Morgan Katz, an infectious disease expert at Johns Hopkins University, told the Associated Press that the Facebook posts misunderstand what’s happening when the swab test is performed.

脱发和头发变白的原因是相关的,科学家首次确认了对此负有责任的细胞。
时间:2010-11-24 编辑:beck
Ask questions immediately if you don't understand something. If you're in the front row and have been making eye contact, your instructor probably already knows by the look on your face that you don't understand something. A polite raising of your hand is all you need to do to indicate you've got a question.

Editor’s note: FactCheck.org is one of several organizations working with Facebook to debunk misinformation shared on social media. Our previous stories can be found here.

Sources

Centers for Disease Control and Prevention. 机构:上半年一线城市新房热度下行 西安、重庆等中西部城市上升 Accessed Aug 3 2020.

Brueck, Hilary and Samantha Lee. “店长马克·斯特罗恩说,开发这种设备旨在帮助那些忘记自己锁屏密码的iPhone用户进入被锁在手机上的照片或通讯录。斯特罗恩在香港第一次看到这台设备,他表示,在最一开始大家都对其能否起作用持怀疑态度。但随着时间的推移,这台设备一次又一次的证明了自己。 Business Insider. 15 Apr 2020. 

Dr. Shawn Nasseri.  Ear, nose and throat surgeon. Email exchange with FactCheck.org. 3 Aug 2020.

Dr. Yvonne Maldonado. Professor of epidemiology, Stanford University School of Medicine. Email exchange with FactCheck.org. 3 Aug 2020.

Fauzia, Miriam. “Others who made the top ten include Amazon's Jeff Bezos at fifth on the list, Mark Zuckerberg of Facebook at sixth, Oracle's Larry Ellison at seventh, Michael Bloomberg at eighth, and tied for ninth are David and Charles Koch. USA Today. 9 July 2020.

Marty, Francisco M., et al. 宽松货币政策难改楼市走向 去库存仍是关键 New England Journal of Medicine. 28 May 2020.

Swenson, Ali. The top obsession of 2010 was the much-anticipated iPhone, followed by actress Lindsay Lohan, the iPad, and the television shows "Glee" and "Jersey Shore". Associated Press. 7 Jul 2020.

UCDavis Health. 落实城市主体责任 促房地产市场平稳健康发展 Accessed 3 Aug 2020.

University of Queensland, Australia. 基建投资规划再加码 稳增长带动水泥需求 Accessed Aug 3 2020.

U.S. National Library of Medicine, National Institutes of Health. “The Blood-Brain Barrier.” Accessed Aug. 4, 2020.