This movie is like I am Lengend only not as cool. Id rather see a disease cause people to turn into zombies then just die off. The black plague killed off many people I believe, so as out immune systems grow stronger and more tolerable to diesease, it seems that the viruses become stronger as well in order to compensate for the stronger immune defense. Spreading disease that ultimatley wipes out the majority of the population of the earth is like any other apocolypse. It is a means to start over again as we can only learn and grow stronger from the experience. Once again people who are living their lives somewhere else away from the initial incendent, becomes affected by the disease, only to prove that everyone is connected and no one is safe no matter how far you are away from what you feel danger can be.