"Good question, but no answer. We know that it seemed to target Muggles, but it's another one of Riddle's creations, so we don't know how it worked or what it did," he answered.
"You'll find that a lot of your questions will be answered with many 'we don't know'. Until recently, there was no trace at all that anything was happening, suggesting along incubation period. Recently, I've noticed minor effect, people getting more tired with spells, nothing really concrete though, since all the research was done inside Hogwarts, and it could have been the result of the stress and Dark magic that people were casting." He shook his head. "Again, no way of knowing. We know the people at King's Cross were amongst the most likely to get infected, and I doubt there is one starting victims. If you come back tomorrow, I'll have the rest of the team here and I'll share all my research and then we can start brainstorming on how to find a cure to an unknown hex with unknown symptoms. It should be quite fascinating from a research point of view."