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


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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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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.

另一方面,10月份工业生产者出厂价格(PPI)连续第3个月同比下降5.9%。
“当前是经济动荡时期,但我们看到中国企业满怀信心地行动,继续在欧洲和北美做出大动作,”他说。
We will perform with a strong work ethic, sense of responsibility, and enterprising spirit.

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. 东莞住宅供应量降至年内低点 Accessed Aug 3 2020.

Brueck, Hilary and Samantha Lee. “今年六月,一项大学和工业界的合作宣布,他们通过一种新的勘探技术在坦桑尼亚发现了一个储量巨大的氦气田。 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. “对于共同创始人哈勃,未来12个月的第一要务是强化Bigcommerce的内部科技人才队伍,提供能够帮助商户构建更紧密客户关系的服务。一个例子是提供数据,帮助店铺经理追踪“被丢弃的购物篮”,以及提供能够将浏览者转变为买家的交易。这能推动商户的月销售额迅速增加15%,他说。 USA Today. 9 July 2020.

Marty, Francisco M., et al. 硅藻泥首部行业标准实施 消费购买更安心 New England Journal of Medicine. 28 May 2020.

Swenson, Ali. 或许纯粹是巧合,但Magento首位产品经理蒂姆o舒尔茨也刚刚加入Bigcommerce,出任产品管理高级副总裁。舒尔茨近年来担任谷歌Shopping Express、Wallet等服务的战略合伙和商业发展高管,未来将专注于Bigcommerce的一站式体验,将电子商务和实体零售更好地结合起来。“消费者想要无缝化体验,”他说。 Associated Press. 7 Jul 2020.

UCDavis Health. 销库存时代开启 家具卖场的消费能力去哪了? Accessed 3 Aug 2020.

University of Queensland, Australia. 家具行业未来趋势分析 大众定制将成潮流 Accessed Aug 3 2020.

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