I read an NIH article on the virus a few days ago that said that this was the case. It's not super well documented (the human to human varient) yet but the evidence suggests that it can be contracted from an asptomatic carrier anywhere for four days to eight weeks prior to showing symptoms and that although close contact is more risky that cases had been documented where the only conctact was passing in a hallway.

There's two good things about it:

One is that it doesn't seem to persist in an environment very well which is good. As bad as airborn contact is that's a lot easier to avoid than contaminated surfaces.

The second and this is brutal but there's not a lot that can be done for someone who is infected regarding their chances of survival. It kills by affecting the function of cardiac muscles so there's really no support to be given the way that COVID was, where things like ventilators and hospital care made huge differences.

This one will be more like stay home, good luck, bring out your dead.

IF we were to have a global or large regional outbreak.

And all the vaccine deniers can relax, Hantavirus is not novel like COVID and there's no effective vaccine so just try not to catch it.

The mortality is pretty feriocious and does not care if you are in good health or bad when you contract it. Just whether or not it stops your heart muscles.

Final good news I guess is probably not a horrifically awful disease to die of.

Oh and other animals can't catch it so hooray on that I suppose.