Also, I'm flip-flopping terribly on this... but Blight is now once again a disease.<br/><br/>It's supernatural and has all the attributes of a virus, infecting cells and manipulating their DNA. The original decision to make it a poison was to fluffily reconcile it with ExisD's character, who would need to have some form of immunity or resistance to it in order to have their raison d'etre.<br/><br/>Errr... was there anything else I missed?