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


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But some people might just remember the mustaches.
11月,由财新网(Caixin)赞助的中国制造业采购经理人指数(PMI)初值为48.6,高于预期的48.3。而10月份该读数则为48.3。读数显示上个月中国制造业活动在继续放缓,不过情况没有10月份那么糟糕。

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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jar 联想记忆:
美国总统奥巴马以每年40万美元的收入高居榜首,同时还拥有5万美元的免税账目。国会最近一次给美国总统加薪是在2001年。

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.

这栋房屋坐落在街道上的一处小山丘上。房屋的入口处是一个大玻璃门廊,有砖砌的地面和对着湖的玻璃窗墙。翻修工程保留了花格镶板的天花板和原建筑部分大量运用的木材。其布局规划是开敞式设计,几乎每个房间都可以从观景窗看见湖景。
网队重建的欲望已经超越了给波士顿另一个高顺位签的不情愿。大坑已经挖好,想要从坑里爬出来,你能做的只有:一步一步地,挑出合适的新秀,交易球员,以及签约。
据《太阳报》报道,根据这一搜索引擎,2012欧洲杯打败了奥运门票,成为今年英国最热门的网络搜索关键词。

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. 儿童家具进入促销季 不卖便宜卖安全 Accessed Aug 3 2020.

Brueck, Hilary and Samantha Lee. “supply 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. “It was a rare glimpse into his closely guarded personal life that also put at risk Apple’s brand in less tolerant parts of the world. Mr Cook was driven to take a stand by his experiences growing up in Alabama, where he has talked of seeing discrimination that “literally would make me sick”. USA Today. 9 July 2020.

Marty, Francisco M., et al. 四川依法开展建材抽检 确保灾后重建安全 New England Journal of Medicine. 28 May 2020.

Swenson, Ali. AdWords事实上是一个竞价排名系统,在支付费用之后,它会把客户的广告列在谷歌搜索结果和其他网站的靠前位置。只有当有人点击这些广告链接的时候,客户才需要支付费用。 Associated Press. 7 Jul 2020.

UCDavis Health. 约好卖房迁户口 爽约卖家败诉 Accessed 3 Aug 2020.

University of Queensland, Australia. 陶瓷片密封水嘴合格率才七成 代工生产偷工减料 Accessed Aug 3 2020.

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