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


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Letizia Battaglia
尽管小小年纪她的事业就取得了如此惊人的成就,但如果给自己的成就打分,且10分满分的话,玛蒂只给自己打9分。
单词posture 联想记忆:

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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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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.

在气候学的史册里,2014年超过了2010年,成为最热的年份。有记录以来的10个最暖年份都是在1997年以后,反映了地球不断变暖的趋势,科学家说,这种变暖是人类活动的结果,并对人类文明和大自然构成了深远的长期危险。
这些弊端是很现实的,但是也有很多方法来回避它们。比如说,你可以利用你的谋生工作向雇主展示你努力工作的诚意。并且你也可以在工作之余继续找其他的好工作。
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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. 地产央企业绩分化格局显现 重组整合步伐将提速 Accessed Aug 3 2020.

Brueck, Hilary and Samantha Lee. “A panel of eight WardsAuto editors evaluated 44 engines among all vehicle types during October and November in the course of their daily commutes and weekend activities in and around the Detroit metro area. Engines were rated according to a wide range of characteristics including horsepower and torque, fuel economy, noise, vibration and harshness characteristics, technology and how they fared against competing powerplants. 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. “Never accept the job immediately. Say you need to think about it overnight. Once you sign on the dotted line there's no room for negotiation. USA Today. 9 July 2020.

Marty, Francisco M., et al. 价格高企 “儿童涂料”是否货真价实 New England Journal of Medicine. 28 May 2020.

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UCDavis Health. 智能家居市场规模超千亿 单品化和平台化是主流 Accessed 3 Aug 2020.

University of Queensland, Australia. 滴滴顺风车重新上线 车主接单需人脸识别 Accessed Aug 3 2020.

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