This a proposed handicap for people entering the game. There is one way to acquire a visible symptom without outside help. To declare to have “seen a rat”, which is to be voluntarily infected with the plague. By the time you are let in, you are displaying the second to last symptom of the plague, and on equal or worse footing with any live villager. Now, if you can convince a poltergeist to give you what you need to acquire the pox or Lycanthropy*, that’s a different matter, but that’s an interesting game case.

The unidle kill clause closes an obvious hole. If anyone wishes to give it retroactive teeth, they are welcome to come up with their own proposal that does so.

*I don’t know if Lycanthropy can be gained in this game. I don’t know if all of the remedies have been tested (I think they have been due to the infinite remedies stunt by cuddlebeam), and how many were tested AFTER Lycanthropy was an option for them to grant. If there is a way to get it, contracting it and getting to wolf form before you die is way to win.