Seonglae ChoThis article argues that shining 222 nm far-UVC light indoors can be relatively safe for people while strongly inactivating airborne viruses and bacteria. The skin’s outer stratum corneum absorbs most 222 nm light, so it does not easily reach living tissue. The fixture costs about $500 per lamp.
Far-UVC light (222 nm) efficiently and safely inactivates airborne human coronaviruses
A direct approach to limit airborne viral transmissions is to inactivate them within a short time of their production. Germicidal ultraviolet light, typically at 254 nm, is effective in this context but, used directly, can be a health hazard to skin ...
https://pmc.ncbi.nlm.nih.gov/articles/PMC7314750/
www.sciencedirect.com
https://www.sciencedirect.com/science/article/pii/S0195670125000921
Let There Be Germicidal Light: This $500 Fixture Could Stop the Next Pandemic, from Complex Systems
Patrick McKenzie talks with Aerolamp’s Misha Gurevich and Columbia researcher Vivian Belenky about far-UVC germicidal light, its safety, evidence for reducing airborne pathogens, and why low-cost fixtures are not widely used.
https://www.cognitiverevolution.ai/let-there-be-germicidal-light-this-500-fixture-could-stop-the-next-pandemic-from-complex-systems/
