I don't know if I'm misunderstanding something, or missed something somewhere.
On p. 141 of Run Faster it says, about Infected, that "Neither can they astrally project, bond foci, or initiate."
Later it says that "An Infected character's aura always reveals its infected nature, though this may be masked by metamagic as normal."
But metamagic is an initiate power. So how do you mask your aura when you can't initiate?
On a related note, is there any way for an infected adept to get power points, other than raising your magic attribute?