As a transplant patient, If I were to go back in time and have cf lungs, I would wear a mask at the clinic or hospital. You can always keep your hands clean. Wearing a mask might be a wise idea.
I wear a mask when I am in the hospital and I always keep a clean one wraped up in plastic in a sealed area of my purse (which is cleaned)lol
You never know where there is a construction area. CF lungs or transplanted lungs, it is wise to keep an extra mask around.
Speak up at your center. You can be the one to make a difference. Write letters to the administration and to the CFF if they are a cff accredited center.