Hayley has never been asked to wear a mask to clinic appointments. But I do know they limit contact between CF patients. They schedule anyone who has cultures Pseudomonas on separate days from patients who have not culture it. ALso when we check in we are usually the only ones in the lobby of the clinic and they check the lobby before we leave to see if any other CF patients are out there, if so we leave out another enterance of the clinic. Our clinic is smaller that most probably are in really big cities, so they are able to do this, don't know if it the norm or not. Probably is a good idea to wear a mask to appointments if your child has to sit in the lobby with other CF patient, but I am interested to read the other responses.