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23 Jan 2020 Many infectious disease specialists say the cheap disposable masks, Dr. Julie Vaishampayan, chairwoman of the public health committee for
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24 Jan 2020 A The most commonly worn cheap and disposable masks, known as the surgical masks, will limit but not prevent entirely the chance of
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14 Feb 2020 Lab tests by City University find homemade masks achieve 80 to 90 per cent function of Scientists in Hong Kong have invented a cheap and easy way to make and Elderly Commission chairman Dr Lam Chingchoi said.
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3 Sep 2019 Earlier clinical studies comparing the masks and respirators yielded mixed results, said Dr. Perl, also a Professor of Internal Medicine who
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2 Mar 2020 Surgical face masks and N95 respirators, which filter viruses from the air with But there are many masks that look similar, made of cheap materials that do Dr. Ariane Davison is a Hong Kongbased viral immunologist and