Board Thread:Ask Questions/@comment-35135592-20180617143531/@comment-27575896-20180617181300

PB and Pest are treated as the same role in game. So if one exists, then another cant.

PB having everyone nearly infected, dying, then amne remembering PB and infecting last to become Pest will stay as Pest. Amne cant remember PB if a Pestilence is alive in game.

this was actually discussed in a very very old forum thread on the forums during testing.