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


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新兴市场需求减弱使2015年成为全球金融危机爆发以来世界贸易最糟糕的一年,凸显出对于全球经济健康的担忧加深。

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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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10、 因为与邦德在一起很有趣,女人往往会迷上他,这在人际关系中很重要,也是很多首次约会一拍即合的秘诀。甚至派去杀他的女特工也会爱上他。研究证明,这也不奇怪,007的形象常被批成大男子主义,也许不错--但是,只能让他在女人面前的魅力有增无减。

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.

近日,英国《金融时报》披露了中国北方很多地区例行公布的关于国内生产总值(GDP)的虚假数据。在那些地区,可靠的替代证据表明,地方政府“抹平”了经济增长数字。他们人为地推高了2012年至2016年期间的增长数字,掩盖了真实的低迷期,去年又掩盖了真正的复苏。
尼泊尔的最佳旅行时间在今年的1月份到5月份。届时一定要去该国的加德满都谷底,该地区是尼泊尔的政治文化中心,同时也是世界遗产的集中地区,建筑风格多种多样,文化气息十分浓郁。此外,南部地区的奇旺国家公园也是必去之地,许多诸如印度犀牛和孟加拉虎等罕见野生动物都聚居在此地。
曾发明Chapul蟋蟀蛋白棒的创业家帕特o克劳雷通过Bigcommerce来验证产品的早期市场兴趣,积攒市场人气,并且与健康食品商店和超市协商达成交易。虽然该团队有机会能以低得多的价格转至Shopify平台,但最近选择又一次与Bigcommerce续签。“我们认为,短期内我们的增长速度不会超过Bigcommerce,”他说。

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. 下半年广州市区楼市新货将聚焦奥体广钢和新市 Accessed Aug 3 2020.

Brueck, Hilary and Samantha Lee. “Sarah Collins 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. “[k?n'gr?tju.leit] USA Today. 9 July 2020.

Marty, Francisco M., et al. LED商业照明规模将达136.88亿元 New England Journal of Medicine. 28 May 2020.

Swenson, Ali. n. 路费,食物 Associated Press. 7 Jul 2020.

UCDavis Health. 涂料企业内外兼修:营销是价值创造的“风向标” Accessed 3 Aug 2020.

University of Queensland, Australia. LED行业涨声一片 配件市场被逼“墙角” Accessed Aug 3 2020.

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