My daughter was diagnosed at 15 months of age. Initially I kept her at home - then when I returned to college I hired private sitters to stay with her. This went on for years until she was about 4. I still remember the day that her pulmonologist told my husband and I "you have to put her in daycare". Told us that she would never have a chance in the world if we did not let her come into contact with germs and bugs. Told us this was how she would build her immune system and have a fighting chance. We took his advice and I have to say that she was not sick every time we turned around. There would be days that many of the kids were not there because they were at home sick - but, she was just fine. She is now 13 years old - she has never cultured Pseudomonas or MRSA - and her PFT's remain at 98%. (and in case anyone cares to know she is double delta F508 - I know this matters to some people).