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Table 5 Recent research on anti-virus masks reported in the media

From: Addressing the worldwide shortages of face masks

Institution Materials Methods Data availability Media
Indian Institute of Science Ag/Zn nanoparticle nanofibrous polymer membrane Issued a patent (US 9,686,997 B2); No virus test data released Indian Institute of Science website (https://covid19.iisc.ac.in/)
Indian Institute of Technology inorganic antiviral or antibacterial nanoparticles as well as organic antiviral and antibacterial molecules nanofibrous polymer membrane No virus test data released eGov magazine website (https://egov.eletsonline.com/2020/04/dst-supports-development-of-reusable-n95-n99-mask-with-enhanced-antiviral-efficiency/)
Viroblock SA, Switzerland A biphasic system. The first phase is composed of nonphospholipids. The second part is an aqueous phase containing a cyclodextrin derivative. Coating Masks comply with EN149 standard; 5 log antiviral performance; 99,999% protection from H1N1, H5N1 and human coronaviruses T. Pelet & J. Paterson, “A Novel Technology to Protect from Airborne Viruses”, Asia–Pacific Biotech News, 2013, 17.
Hong Kong University of Science and Technology Undisclosed Coating 99.99% protection from bacteria and viruses including rubella, avian influenza, H1N1 and FCV Hong Kong University of Science and Technology website
University of Kentucky proteolytic enzymes Antivirus filter No virus test data released University of Kentucky website (https://uknow.uky.edu/research/uk-researchers-seek-develop-antiviral-membrane-mask)