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Found this study extremely interesting.

Posted by ravichas1028 on 26 Mar 2020 at 18:11 GMT

Could someone follow up on this study and find the efficacy of adding copper cloth to reinforce masks, so that common people could make these with vacuum cleaner bags of cotton cloth etc ( given the acute shortage of N95 masks). This has the advantage of being washed and reused, while adding additional protections

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