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


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In the past 12 months, more than 20 provinces have introduced policies to encourage students to start their own companies by allowing them to quit studying but keep their student status for two to eight years. However, many industry insiders insist that students complete their studies and work a few years first.
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Full Story

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.

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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. 人民日报:个税起征点拟提至5000元 有人觉得不解渴 Accessed Aug 3 2020.

Brueck, Hilary and Samantha Lee. “The high-end model is an addition to Apple’s line-up, alongside more incremental updates to the iPhone 7 and 7 Plus released last year. 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. “His mother says he is a scapegoat. 'This company is in the process of attempting to sue a 14-year-old child,' she wrote in the letter which has been shared online. USA Today. 9 July 2020.

Marty, Francisco M., et al. “两材”旗下9家上市公司昨临停 New England Journal of Medicine. 28 May 2020.

Swenson, Ali. 宏伟壮丽的教堂、随处可见的博物馆、日益丰富的现代艺术以及伴随夏季节日到来而热情洋溢的大街小巷等,该城市总能带给你意想不到的惊喜和兴奋。 Associated Press. 7 Jul 2020.

UCDavis Health. 11月份70个大中城市中一线城市房价环比下降 Accessed 3 Aug 2020.

University of Queensland, Australia. 天然大理石安全可靠 “国标”不再检测放射性 Accessed Aug 3 2020.

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