it's going to be pretty much anyone who's gone through chemo. Your body is healing from the damage that the chemo has done to the entire body, and that takes years. Like myself, I've been through chemo and radiation two separate times within a year and a half, plus the SCT the second time around. God knows how much longer I'll be on the anti rejection meds, and the meds that are still suppressing my immune system. Plus the anti viral, anti bacterial and anti this and that meds. So, yes, even if your not on your own pharmacy of meds, your body is going to take longer to get past colds and the flu. Shane (Blood -cancer.com team member)