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


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这位开国之父指出,选举人团既会防范外国势力想在我们议会中获得不当影响力之心,又会确保总统之位永远不会落到并非具备必要素质的杰出者那种人手里。
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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.”

Foreign robot makers sold 103,191 robots to China in 2017, up 71.9% from a year earlier.
普京在国际记者年度新闻发布会上表示,他准备和任何一位当选的美国总统合作。

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.

一名11岁的女学生因发明了一个快速、廉价测试铅污染水的方法,而被誉为“美国顶尖青年科学家”。
Airbnb的紧要关头
她还表示,从较长期来看,另一个让她担心的“R”是“重置”(reset),她解释称,全球各地的货币和财政政策在回归正常之前还有很长的路要走。她补充称:“最终的重置是那些在全球各地都有必要实施的结构性改革。”

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. 中国央行调查:近半居民预期下季度房价“基本不变” Accessed Aug 3 2020.

Brueck, Hilary and Samantha Lee. “不过幸好y一位Siddeeq先生的朋友看到了电视新闻于是联系了他。Siddeeq先生表示他依然非常希望看到这封信,虽然他和写信的未婚妻已经离婚了。 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. “然而,主要榜单上的排名大幅上升不会自动转化为欧洲商学院排名的上升。例如,牛津大学(University of Oxford)萨伊德商学院(SaBusiness School)在MBA榜单上的排名上升1位,在开放招生EMBA课程的排名上升5位,在EMBA榜单上的排名上升12名,首次进入该榜单前十名,但其在欧洲商学院榜单上的排名没有变化,依然是第10名。 USA Today. 9 July 2020.

Marty, Francisco M., et al. 楼价蹿涨加剧市场风险去库存仍将是长期主题 New England Journal of Medicine. 28 May 2020.

Swenson, Ali. 这几年的实践可以证明,中国经济“硬着陆”论可以休矣。我们会长期保持中高速增长,并迈向中高端水平。 Associated Press. 7 Jul 2020.

UCDavis Health. 深圳楼市“21连降”后为何迎来调控加码? Accessed 3 Aug 2020.

University of Queensland, Australia. 北京6月已有13个住宅项目获批入市 Accessed Aug 3 2020.

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