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The studies show you can UV-C them (it reduces the physical strength of the mask but not the filtration ability, and can be done many many cycles: I think I saw at least 20); have you actually tried searching for how to sterilize masks yet?

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Can you provide said studies?

Effects of Ultraviolet Germicidal Irradiation (UVGI) on N95 Respirator Filtration Performance and Structural Integrity, https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4699414/

NYTimes.com: As Coronavirus Looms, Mask Shortage Gives Rise to Startling Solution, https://nyti.ms/3b8C1HQ

UV does not kill coronavirus.

Do you have a source for that? I'd be very surprised at the existence any organism that's entirely impervious to UV. Especially something like a virus that doesn't have active repair machinery (or any machinery altogether) when it's out and about.

Yes, the World Health Organization's Myth Busters page about coronavirus [0]. But there's sub-spectrum of UV, which might be helpful [1].

[0]: https://www.who.int/emergencies/diseases/novel-coronavirus-2...

[1]: https://www.crr.columbia.edu/research/using-power-light-prev...

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