Broken Butterfly
Enhancing Knuckle Damage
Disease, it didn't spread like a virus, it's been a while since I seen this movie, but I don't remember it being contagious in any way. Marlene wasn't infected anyway. I guess it's bcause she was in Kalm at the time of the Lifestream moment.
The only way that could happen was if Imaginationland was breached and terrorists stole Geostigma. Even then it wouldn't work since it came from the lifestream and we don't have a lifestream, and I don't think the terrorists or Japanese could create a lifestream in the earth then have it spew out Jenova cells.
thanx dragon mage as well. ur theory waz really good