Treatment for cystic fibrosis: children of hope. In recent months, children aged 2 to 5 can finally receive a revolutionary drug.

Some are getting ready to test it, others are waiting to see if it works. Otto has already had four intestinal obstructions, the fault of the abnormally thickened mucus which jams the body's machinery, blocking his digestive tract, and the lungs, in the long term. The rare and incurable genetic disease gives few symptoms at this age.