IV: Unrealistic Expectations?

Part of my recovery is that I'm not allowed to get sick. At all. For at least a year. If I get any kind of infection—cold, sore throat, you name it—before then, I am in trouble. I've been told, not just to get in to a doctor to get it checked out, but to call my surgeons so they can check it out. Geez, these guys are taking this so seriously. ;)

Okay, fine. I understand that any sort of illness could jeopardize my health. I also understand that they want to take extra precautions against the possibility that I might have a recurrence of this particular infection (and frankly, that is an idea that has terrified me ever since I left the hospital). What I don't understand is just how I'm supposed to manage this miracle. Aside from this recent disaster and my migraines, I'm a fairly healthy person. And yet I get a cold basically every six months, spring and fall. But now I'm not allowed. How do I do that? Shoot if I know.