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


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节目7 歌曲《春暖花开》,那英
“Tangerine” (Sean Baker)
SETTING: Stonington is on Little Narragansett Bay in southeastern Connecticut, about an hour by car from Hartford and Providence, R.I., and three hours from New York City. Once a busy harbor with a long maritime history, the town remains home to a commercial fishing fleet, several historic districts of Colonial and Federal houses and a healthy sailing community. There’s a small public beach at the tip of town and another, much larger one in Watch Hill, R.I., about a 20-minute drive away. This Greek Revival house, with the requisite Ionic columns and a fan window in its pediment, is in the center of town.

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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.”

高盛将大派红包,饱受各方抨击一个月,然后静悄悄地干回自己的老本行--挣钱。
如果我们问你“你想要多少月薪?”你应该说随便,或是根据工作责任而定。除非我们逼你,别自己说出一个具体的数。因为那只会让我们在商量上面占上风。

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.

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大小:6364平方英尺(约591平方米)

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. 陶博会受冷落 引发佛山陶瓷行业转型之争 Accessed Aug 3 2020.

Brueck, Hilary and Samantha Lee. “adj. 确实的,保障的,有自信的 动词assure的过 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. “201012/119869.shtml重点单词 USA Today. 9 July 2020.

Marty, Francisco M., et al. 4月1日“开好票” 5月1日“报好税”——我国深化增值税改革进入冲刺 New England Journal of Medicine. 28 May 2020.

Swenson, Ali. 俄罗斯的SKN公司将老旧俄国弹药制作成钻石。这就是回收利用! Associated Press. 7 Jul 2020.

UCDavis Health. 国家统计局:2017年12月份热点城市新建商品住宅价格总体稳定 Accessed 3 Aug 2020.

University of Queensland, Australia. 房企密集发行境外债券 专家:境内融资仍是核心融资来源 Accessed Aug 3 2020.

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