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


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China’s handling of its state reserves of raw materials such as cotton and sugar will be a key factor shaping the direction of agricultural commodities in 2017, according to a major lender to agribusinesses.
They also arrived 40 minutes late for the official welcome and were running late to an event in Vancouver, too.

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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.”

单词medal 联想记忆:
这项技术曾经运用于武器,但是运用在仿生腿上会更复杂。误读信号可能导致安装者跳下桥或站在开动的车辆前,依靠思想控制的仿生腿需要比武器更为复杂的程序。正如研究者指出的那样:如果你使用仿生胳膊,而胳膊动作做错了,可能只是手肘偏移预订位置。而如果仿生腿动作做错了,那可能就是生命安全问题了。

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. 信用住报告出炉:芝麻信用帮2000万用户免除360亿元住宿押金 Accessed Aug 3 2020.

Brueck, Hilary and Samantha Lee. “D型人格的人通常自尊心不足,害怕被反对。这也是他们不想向其他人敞开心扉的主要原因。 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. “胡须的神奇之处 USA Today. 9 July 2020.

Marty, Francisco M., et al. 链家中介买二手房说好的“终身质保”只剩一年 New England Journal of Medicine. 28 May 2020.

Swenson, Ali. Alumni from the Swiss school also have the third-highest salary, at $114,449, adjusted for purchasing power parity, behind those from the Indian Institute of Management at Ahmedabad, on $116,476, and IIM Bangalore, on $116,094. St Gallen is also top for the quality of its careers service. Associated Press. 7 Jul 2020.

UCDavis Health. 家居建材业开始打“文化”牌 Accessed 3 Aug 2020.

University of Queensland, Australia. 智能卫浴标准将落到实处 抽检不合格将面临罚款 Accessed Aug 3 2020.

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