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A Project of The Annenberg Public Policy Center

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


Quick Take

toxic
Let’s never spend our New Year apart.让我们永不独享新年。
教育部之后表示,他们不会容忍这种欺骗行为,并已经要求公安部门进入进行调查。

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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.”

“加之相比创业,高校更注重培养学生的创新意识。这也是大学生创业意向如此低的另一个原因。”
7. Hearing Aid

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.

布雷克·格里芬的高中样子和现在相差不大。只要在高中版的格里芬上加一些头发,再增大他的肌肉,就变成了如今的格里芬。
n. 辐射,放射线
Lecent去世当月,警方并未透露是她自己无意间扣动扳机还是被屋内的其他人射中。

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. 全国百城楼价涨幅无锡居首 二线城市成上涨主力 Accessed Aug 3 2020.

Brueck, Hilary and Samantha Lee. “No. Wall Street strategists’ predicting that the US government’s 10-year borrowing costs will climb above the 3 per cent mark in the coming year is as much a staple of the Christmas period as awkward office parties. This year the forecasts look more likely to be fulfilled, given a withdrawal of quantitative easing and the US tax cut. However, the seismic, secular forces pinning down both inflation and long-term bond yields remain in place and are still underestimated. The Federal Reserve will raise interest rates at least three times in 2018, but the 10-year yield will not breach 3 per cent. 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. “"No one really knows how (end times) would look and how God would bring it about," Cox said. USA Today. 9 July 2020.

Marty, Francisco M., et al. 六成家具缺失说明书 究竟为何 New England Journal of Medicine. 28 May 2020.

Swenson, Ali. 最令人兴奋地其实是交易期 Associated Press. 7 Jul 2020.

UCDavis Health. “双十一”是马云一个人的胜利 照明行业需冷静对待“可被操纵”的销售额 Accessed 3 Aug 2020.

University of Queensland, Australia. 2017年楼市限购仍有加码空间 去库存效果明显 Accessed Aug 3 2020.

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