| Common | | Bacteria | | Pseudomonas aeruginosa | | Enterobacteriaceae | | Nocardia spp | | Anaerobic bacteria and microaerophilic streptococci (eg, Streptococcus milleri) | | Staphylococcus aureus | | Mycobacteria | | M. tuberculosis | | M. kansasii | | Fungi | | Cryptococcus spp | | Aspergillus spp | | Histoplasma capsulatum | | | Uncommon | | Bacteria | | Rhodococcus equi | | Legionella spp | | Mycobacteria | | M. avium complex | | Other nontuberculous mycobacteria | | Fungi | | Agents of mucormycosis | | Blastomyces dermatitidis | | Pneumocystis jirovecii (formerly P. carinii) | |
