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It’s certainly possible, but it might be that it’s very difficult for some organisms to evolve certain protections because adapting can reduce fitness in other ways. So maybe there is a barrier that would help it from UVC but perhaps that makes the virus less likely to bind at key sites and thus not able to replicate.

The outdoor environment has lots of UV rays from the sun, so this selection pressure has existed for a long time.

Ah, thank you

Would that selection pressure apply much given the time viruses spend outside of their host ?

the article goes on to say:

> Far-UVC is like an aerial disinfectant or bleach, except that it is harmless to humans at practical germicidal doses, and thus should not provoke resistance to its uptake. It does not alter pathogens in a way that allows resistance to emerge, a serious problem for antibiotics. Instead, it thoroughly damages microbial genomes at random, destroying bacteria and viruses alike, whether they are drug-resistant, vaccine-evasive, or indeed newly emerged.