To add on to the points here, hantavirus is lethal in a way that doesn’t translate to widespread pandemics easily. Coronavirus is unique in that while it was 5:1 more lethal than similarly transmissible airborn viruses, that was the “Goldilocks zone” for a virus with its lethality and transmissibility to do maximum damage. Lots of excess death, but the average person generally only had a slightly rough go of it. Hantavirus has >30% lethality in many forms, and is extremely likely to burn itself out before any sort of epidemic status.

So ultimately, very unfortunate for those that contract it, but its characteristics put it way below pretty much every other airborn illness in terms of what keeps me up at night.

Wouldn’t that basically be any action that didn’t start in the prefrontal cortex? There are plenty of fauna that are basically entirely composed of “default action”.