Well, everything is carcinogenic. Given that sunlight has plenty of UV-C, it's probably okay to expose tissues to it briefly. (Of course, this is one of those treatments that definitely needs careful study.)
Re:COVID-19 Therapeutics Accelerator
by russholmes on Tuesday March 10, 2020 @09:41AM
(#22535344)
UV-C is completely absorbed by atmospheric oxygen and ozone - none reaches the ground.
It kills any cell, it's not discriminatory. Oh, and UV-C is carcinogenic. Once you understand that you might appreciate why we don't just shove a UV light up a colon.