As far as contagion – the issue is with bodily fluids. So as long as you don’t touch/ingest/etc any pee, poop, blood, spit, sweat etc of the patient, you should be fine.

Most of the outbreak origins can be traced back to eating infected animals. Like an infected monkey…

It sounds like it’s kind of like AIDS – as long as you use precautions around the patient not to get exposed to their body fluids, you’re less likely to get it.