DS has CF. We all get the flu vaccine. Avoid hot tubs. Use hand sanitizer after shopping, gymnastics, after church. Avoid hand to mouth/nose contact. Try to avoid sick people -- don't touch community magazines at the clinic, don't let ds play with community toys at the clinic. We keep ds away from other people wcf, which is one reason we stopped going to our local cf clinic -- small community waiting room, shared toys, shared EXAM rooms -- we were supposed to go room to room to meet with each specialist, not have the come to us in an exam room. Avoid smoke -- specifically smokers.