Markers of Pulmonary Dysbiosis Associated With Exacerbation in Patients Followed for Cystic Fibrosis

The aim objective is to identify markers of bacterial, viral and fungal pulmonary dysbiosis, associated with the occurrence of exacerbation in patients followed for cystic fibrosis. The primary endpoint is the association between a modification of at least 10% of the relative abundance of a bacterial phylum (Proteobacteria, Firmicutes, Actinobacteria, Bacteroidetes, Fusobacteria) or fungal (ascomycetes / hemiascomycetes, basidiomycetes, zygomycetes), or viral, and the occurrence of exacerbations over a period of 12 months.