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MedPede 12 points ago +12 / -0

Meanwhile, we've had validated studies of UV-C light being extremely effective

https://tru-d.com/betrdstudy/

The 222 nm wavelength is much safer than previous methods:
http://www.columbia.edu/~djb3/papers/Germicidal%20Efficacy%20and%20Mammalian%20Skin%20Safety%20of%20222-nm%20UV%20Light.pdf

We've been using UV-C in our hospitals for years with very good results.