AndyDufresne wrote: It seems that after a week of being infected with CHI-2 the mental state of any infected person changes. They no longer seek help and develop a maddening rage which flourishes and awakes during the dark hours.
This was on page one, during the background info that Andy was giving us.
This is what made me think that the CHI-2 infecteds (the mafia) do not infect, here it implies that they kill.