I keep reading that "immune" folks get an immunity boost and occasionally subtle symptoms when reexposed to varicella. Does that also make them contagious? Would it be as contagious as full blown varicella? Studies have been stating that the vacine has limited reexposure and thus there are fewer boosts. Which in turn might be causing more shingles. Not sure. So that must mean you are not considered contagious with only mild symptoms and no rash? Just curious.