Questions about the game (spoilers)

I just beat the game, I didn't understand a few story lines
1) In LF1, who sent the virus? Do we assume the GC sent it? I don't remember seeing any confirmation of who sent it.
2) Why is Coryool acting all strange? I didn't really understand this even going through the story.
3) How long was Louis bad for? From the first moment we met him in LF1?
1) In LF1, who sent the virus? Do we assume the GC sent it? I don't remember seeing any confirmation of who sent it.
2) Why is Coryool acting all strange? I didn't really understand this even going through the story.
3) How long was Louis bad for? From the first moment we met him in LF1?