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


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《寻梦环游记》
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但多数白人常把民族和种族身份混为一谈。对很多白人来说,这种身份感觉像是支撑他们的世界最重要的支柱之一,而现在,它似乎受到了威胁。

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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.”

The Education Ministry has also taken some measures, such as canceling testing results and noting cheating in personal records.
根据《人民日报》的一份报告,截至2016年年底,中国的电影银幕已达到41179块,另外新增1612家电影院和9552块电影银幕。

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.

adj. 突出的,显著的,未支付的
哈佛大学连续16年位居榜首,斯坦福大学和剑桥大学仍分别位列第二、第三名。
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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. 为员工买房操碎心的公司:或无息贷款 或半价出售 Accessed Aug 3 2020.

Brueck, Hilary and Samantha Lee. “n. 财产,所有物,性质,地产,道具 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 study relied on a dataset of hundreds of millions of secret answers and millions of account recovery requests. USA Today. 9 July 2020.

Marty, Francisco M., et al. 唐山:329.48亿 16个新项目落户曹妃甸 New England Journal of Medicine. 28 May 2020.

Swenson, Ali. 耶路撒冷小女孩参加“圣殿山筛选项目”考古活动时,发现一古埃及护符。 Associated Press. 7 Jul 2020.

UCDavis Health. 今年杭州住宅供应近21万套 总库存量高达2443万方 Accessed 3 Aug 2020.

University of Queensland, Australia. “碎尸案别墅”拍出后 拖欠的物业费谁付? Accessed Aug 3 2020.

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