Pneumocystis jirovecii and cystic fibrosis in France.

We retrospectively investigated 76 patients with cystic fibrosis for the presence of Pneumocystis jirovecii, by performing real-time PCR and nested-PCR assays on 146 archival sputum specimens. P. jirovecii was detected in only 1 patient (1.3%) showing that in our region (Brest, France), the fungus is rarely involved in pulmonary colonization in patients with cystic fibrosis.