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


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2016年重庆市GDP增长了10.7%,达到了1.76万亿元人民币。贵州和西藏分别实现了10.5%和10%的GDP增长。
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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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这一数字是曼谷市人口(1000万)的两倍多。

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.

It also said 98 percent of government-sponsored students returned to China. Government-sponsored students who study abroad have chosen to pursue disciplines most needed in China, including engineering, the pure sciences, agriculture and medical science.
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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. 广交会家居板块成交略降 欧洲订单下滑是主因 Accessed Aug 3 2020.

Brueck, Hilary and Samantha Lee. “The 15 ranked online MBA programmes provide flexible study options for working executives, who can expect to graduate with the same qualification as their full-time, residential MBA counterparts. 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. “皮肤辛苦的担任着包裹我们和保护我们整个身体的责任,因此它也成为了最容易被伤害的器官。当皮肤被烧伤或者被割破,你最快的选择是从身体其他部位移植一部分过来。然而,感谢斯坦福大学科学家的研究,一种能有效替代人体皮肤的材料,不久后将面世。 USA Today. 9 July 2020.

Marty, Francisco M., et al. 46个重点城市将建垃圾分类处理系统 New England Journal of Medicine. 28 May 2020.

Swenson, Ali. That is up from a rise of 11.2 per cent in September. Associated Press. 7 Jul 2020.

UCDavis Health. “3·15家装曝光台”将走进建材商场、家装公司 Accessed 3 Aug 2020.

University of Queensland, Australia. 打造“房地一体” 确权登记新模式 Accessed Aug 3 2020.

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