There are PLENTY of place you could deploy this without shining them directly on people as we continue studying the details, but this isn’t a single new paper.

Also, from the article. “This reduction was achieved using Far-UVC irradiances consistent with current American Conference of Governmental Industrial Hygienists threshold limit values for skin for a continuous 8-h exposure.”

Thus has been under research for a decade now. Plus the effects of UV on humans is pretty damn well studied at this point. This is just finding the right crossover point that’s effective against microbes, but no longer dangerous against more complex organisms.

I also think we should start retrofitting all ventilation systems with UV disinfectants.

My concern is the effect on the microbes on our skin that we rely on.

Yeah, I agree with this. I've been wishing for a way to retrofit our AC with something that uses UV to scrub the air.

That already exists. It’s relatively common. I’d call your servicer and ask about it.

I already have this in my home. It wasn’t terribly expensive.

Just put it inside the HVAC system.

that already exists, but as they explain in the article you can cycle through the whole room’s air much more often if you expose the occupied room.

> The lamps inactivated more than 98% of the airborne microbes in just five minutes.

If they only need five minutes, I guess that could mean that they don't need to be on all the time, but turned on intermittently based on room occupancy and ventilation levels.

"May" in that context is just a weasel word that gets inserted to be cautious.

It can mean there is genuine uncertainty, but it can also be equivalent to we can't be absolutely sure the sun rises tomorrow.