| Organism | WG* | IPF | ||
| No. of BALs | CFU/ml | No. of BALs | CFU/ml | |
| Staphylococcus aureus | 13 | 3×105 | 0 | 0 |
| Haemophilus influenzae | 3 | 5×106 | 2 | 6×105 |
| Haemophilus parainfluenzae | 3 | 2×104 | 2 | 1×105 |
| Streptococcus pneumoniae | 1 | 5×107 | 1 | 1×105 |
| Moraxella catarrhalis | 2 | 1×105 | 1 | 5×105 |
| Pseudomonas aeruginosa | 1 | 1×106 | 1 | 4×105 |
| Proteus mirabilis | 0 | 0 | 1 | 4×104 |
| Klebsiella pneumoniae | 1 | 4×105 | 0 | 0 |
Bacterial growth is presented as mean colony-forming units (CFU)/ml. No normal controls grew pathogenic bacteria in their bronchoalveolar lavage fluid.
*Three patients grew two pathogens.
BAL, bronchoalveolar lavage; IPF, idiopathic pulmonary fibrosis; WG, Wegener granulomatosis.