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.”
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.”
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.”
In my life, I have dreamt of seeing the great herds of wild animals, jungles and rainforests full of birds and butterfilies, but now I wonder if they will even exist for my children to see. 我一生的梦想就是能看到成群的野生动物，茂盛的丛林和大片的雨林中到处是鸟类和蝴蝶在飞舞。但是现在我想知道我们这些小孩是否还能再看到它们？
各大资产管理公司的专家们表示，评估亚洲ETF潜力的难题在于日本市场在地区所占比重过大，以及日本央行(Bank of Japan)扮演的角色过大。日本央行每年购买6万亿日元（合540亿美元）的ETF，这扭曲了市场。
Centers for Disease Control and Prevention. 一二三线城市房价稳中有涨 租赁市场成调控重点 Accessed Aug 3 2020.
Brueck, Hilary and Samantha Lee. “2. Tell all your friends not to give birth or wed or die or whatever during the World Cup coz we won’t go. 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. “Effective bosses and managers tend to: USA Today. 9 July 2020.
Marty, Francisco M., et al. 开发商为众筹模式让利 缺乏监管市场风险大 New England Journal of Medicine. 28 May 2020.
Swenson, Ali. “有个人把一杯咖啡摔在地上后就扬长而去。” Associated Press. 7 Jul 2020.
UCDavis Health. 房价企稳信号明显 回升态势或持续至下半年 Accessed 3 Aug 2020.
University of Queensland, Australia. 2015年LED照明市场规模将达257亿美元 Accessed Aug 3 2020.
U.S. National Library of Medicine, National Institutes of Health. “The Blood-Brain Barrier.” Accessed Aug. 4, 2020.