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


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《深红报》称,此次被取消入学资格的学生所在的私人脸书群组名为“哈佛饥渴猥琐资产阶级少年”。
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新加坡已经连续三次被列为世界上生活成本最贵的城市,但是这一年中城市生活成本在世界范围内的分布有了显著的变化。

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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.”

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1. “Timbuktu”(Abderrahmane Sissako)

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.

因此,在这个世界把你打败、为你冠以头衔前,发表独具风格的宣言,定义你心目中的自己。
The 2018 Academic Ranking of World Universities released last Wednesday by Shanghai Ranking Consultancy reveals that 62 research universities in China have made their list of the world's top 500 universities.
我们坐在这里指点江山,告诉那些球队“你们没指望了,赶紧输球摆烂吧!”这是很容易的,但是我们并不是那些在为球队门票和广告殚精竭虑的家伙们。

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. 宁波楼市火爆为何还“电话轰炸”?背后是复杂利益链 Accessed Aug 3 2020.

Brueck, Hilary and Samantha Lee. “The upshot: The world's largest economy can still function as an oasis in a desert despite the claims of doomsayers that those days are over. 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. “The raised decoration shows a cartouche — an oval frame around Egyptian hieroglyphics indicating a royal name. Above the frame archaeologists could make out the symbol of an eye and that of a cobra. USA Today. 9 July 2020.

Marty, Francisco M., et al. 广交会家居板块成交略降 欧洲订单下滑是主因 New England Journal of Medicine. 28 May 2020.

Swenson, Ali. 加强产权保护制度建设。 Associated Press. 7 Jul 2020.

UCDavis Health. 李克强:政府服务必须围着市场主体和人民群众转 Accessed 3 Aug 2020.

University of Queensland, Australia. 北京房贷出现松动潮 首套房利率9折重返市场 Accessed Aug 3 2020.

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