Have a physical, working antidote (vaccine) for occult states. There is awareness of the danger of becoming a plantman, less so for vampyres or werewolves, which only rare NPCs know about. But the plantman potion is known to professional gardeners who walk the streets. Yet people don't take any precautions against it before doing gardening, unlike in reality where we have vaccines against ticks or lockjaw or other conditions common in nature. The cures can only reverse the condition.

I don't use cures because the occult states seem to be much too deep to be easily undone. In reality curing a disease ir really hard. I have an immunity to vampyrism, but it is simply potions in the pocket, and not functional. I know the technical side how you don't actually become a plantman in practice without a long play session.