It has been sometime since I have visited this forum again. Ok... I have just made a decision to revive a very old fic; a 5 year old draft of a story about eugenics. The reason for the hiatus from was becos I couldn't find a good reason for eugenics to be revived in the 22nd century. but now I have.... A virus's mutation causes the human population to collapse in the late 21st century. But my question is what is the possibility of a virus of today being able to evolve into a form where it can affect the mind of the host? Is that too impossible or is it entirely within the realms of reality? Discuss.