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美Quora平台网友：新冠病毒溯源要讲证据，美国自己也应接受调查 “证据比猜想更重要” 网友保罗·克利福德(Paul Clifford)在平台发言中指出，就新冠病毒起源自中国的说法，美国的一些盟友曾要求时任总统特朗普提供“确凿证据”，但是他们最终也没拿到令人信服的证据。美国的情报机构也曾透露，根据他们的调查以及科学证据，新冠病毒不是人造的，也不是基因改造的结果，更像是自然突变的结果。 网友尼基塔·拉维尔(Nikita Lovell)认为，美国白宫...
If You Can't Find an N95, This Could Be the Next Best Thing, Study Shows By Sarah Crow of Best Life | If You Can't Find an N95, This Could Be the Next Best Thing, Study Shows While N95 masks may still be in short supply as the COVID pandemic rages on, there may be a clever solution that keeps you nearly as protected as medical-grade PPE. According to a new study, a dry baby wipe could be the key to making your mask nearly as protective as an N95. Read on to learn more about this science-backed hack, and for more mask tips you need to know, find out why If Your Mask Doesn't Have These 4 T...
Credit: UBC In the race to stop the spread of COVID-19, a three-layer cloth mask that fits well can effectively filter COVID particles, says a group of UBC researchers. After testing several different mask styles and 41 types of fabrics, they found that a mask consisting of two layers of low-thread-count quilting cotton plus a three-ply dried baby wipe filter was as effective as a commercial non-surgical mask at stopping particles--and almost as breathable. The cloth masks filtered out up to 80 per cent of 3-micron particles, and more than 90 per cent of 10-micron particles. "We focused on p...
The Public Health Agency of Canada (PHAC) doesn’t currently recommend double-masking, saying in a statement that “Canada’s context is different from that of the U.S.” “We will continue to monitor the situation and will adapt our guidance if further such evidence emerges,” PHAC said in an email to The Canadian Press. The U.S.-based CDC has also not issued guidance on wearing two masks at once. Dr. Lisa Bryski, a physician in Winnipeg, isn’t aware of any studies on double-masking efficacy, but she still agrees with Fauci’s claim. “Anything that increases the barriers or ‘ob...
Melissa Couto Zuber Tourists from Wuhan, China, some with double face masks, stand in a line for a charter flight back to Wuhan at the Suvarnabhumi airport, Bangkok, Thailand, Friday, Jan. 31, 2020. THE CANADIAN PRESS/AP/Gemunu Amarasinghe January 28, 2021 - 12:29 PM Increasing concerns over more infectious COVID-19 variants has led some to wonder whether our face masks need an upgrade. Should we layer two masks on top of each other, as politicians and spectators at the U.S. presidential inauguration did earlier this month? Should we replace cloth masks with medica...