Exactly the same issue from this bug a while back https://ludeon.com/forums/index.php?topic=46690.0. I'm running 1.0 with mods but none that modify guest behavior aside from the Hospitality mod.
Guests get an infection then self-tend with 0% bandage and end up dying as a result regardless of what I try to do.
Guests get an infection then self-tend with 0% bandage and end up dying as a result regardless of what I try to do.