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


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Yan Pu, head of portfolio review in Asia at Vanguard, suspects the Asian product mix may be holding things back. For example, Asian providers offer plenty of equity ETFs but very few fixed income products. In the US, she notes, fixed income ETFs are growing rapidly.

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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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现在,她主要在模特行业发展,但是她也很希望跻身演绎圈。

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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Wearables typically fall into three categories: complex devices such as fitness trackers; smart accessories such as smart watches, defined by their ability to run third-party applications; and fully autonomous smart wearables that connect directly to the Internet, such as Google’s Glass headset.

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. 广州省质量抽查LED模块产品抽检合格率100% Accessed Aug 3 2020.

Brueck, Hilary and Samantha Lee. “University officials said the letter was now on its way to him along with a T-shirt from the university. 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. “由于欧元危机的影响,希腊,意大利,葡萄牙以及西班牙的排名大幅下滑。然而下滑幅度最大的是由于近期的政治危机影响的埃及,缅甸,和沙特阿拉伯。 USA Today. 9 July 2020.

Marty, Francisco M., et al. 广东楼市上半年总体量降价稳 New England Journal of Medicine. 28 May 2020.

Swenson, Ali. 该读数最后一次高于50是在2月份。对于该指数来说,是否高于50是区分制造业活动是扩张还是收缩的荣枯线。 Associated Press. 7 Jul 2020.

UCDavis Health. 人民日报:除了5000元的个税起征点 你更应关注这三个改变 Accessed 3 Aug 2020.

University of Queensland, Australia. 中央经济工作会议:解决好婴幼儿照护和儿童早期教育服务问题 Accessed Aug 3 2020.

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