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


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受到国家经济全面紧缩的影响,正面临弹劾的巴西总统迪尔玛?罗塞夫在去年十月时年收入下滑至10.34万美元,与之前相比下降10%。
n. 必死的命运,死亡数目,死亡率
unemployment

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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.”

《她》(Her),由斯派克?琼斯(Spike Jonze)担任编剧兼导演,将浪漫带入了虚拟世界,影片的主人公展开了一场有些疯狂的真正激情之旅。华金?菲尼克斯(Joaquin Phoenix)扮演的男主角是个令人心酸的孤独小伙子,他爱上了自己智能手机的新操作系统。影片的基本构想有些脆弱,但故事非常华丽地展开,霍伊特?范?霍特玛(Hoyte Van Hoytema)的摄影也很精妙,完美地烘托了菲尼克斯、艾米?亚当斯(Amy Adams)和斯嘉丽?约翰逊(Scarlett Johansson)的表演。斯嘉丽?约翰逊在片中扮演的是智能手机操作系统的声音和灵魂。
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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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中国商务部(Ministry of Commerce)表示,今年1-10月中国对外投资总计863亿美元。
由于合并后的航空公司通常继续分别公布航班延误统计数据,我们可能需要几年时间,才能看到全新美国航空公司在假日旅行方面表现如何。

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. 楼市松绑难阻家居业疲软 品牌企业逆势扩张 Accessed Aug 3 2020.

Brueck, Hilary and Samantha Lee. “让苹果公司内部“各路藩王”和谐相处不是件易事。用一位在苹果工作多年的员工的话来说,公司内部仍然存在“巨大的紧张感”。“这种紧张感是他管理公司的手段,但也可以很危险。” 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. “受能源和大宗商品价格日益下跌影响,中国12月工业生产者出厂价格连续第34个月下跌。 USA Today. 9 July 2020.

Marty, Francisco M., et al. 三星加速智能家居布局 再购美国空调经销商Quietside New England Journal of Medicine. 28 May 2020.

Swenson, Ali. 3. 西北大学凯洛格商学院 Associated Press. 7 Jul 2020.

UCDavis Health. 怎样建设?质量差不差?价格低在哪?——三问北京保障性住房 Accessed 3 Aug 2020.

University of Queensland, Australia. 楼市利好不断 股市违规频现资金会搬家吗? Accessed Aug 3 2020.

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