Tyrant? Like in Resident Evil. Rick's gonna be a mutant monster.
Back to "everyone is infected". Again, at the start of the season, dead bodies on the road and in cars that weren't walkers. (Carl finds some knives in one car with a corpse that IIRC, didn't have a head wound.)
I'm thinking they died before the infection spread to the living.
Why does T Dog think the east coast is a good idea? Let's hear more about that. Live on a boat?