Organism

Otitis media

Infant, child, and adult: S. pneumoniae (23%) (GPDC), H. influenzae (36%) (GNCB), M. catarrhalis (3%) (GNDC), S. aureus (GPC), S. pyogenes (GPC in chains), viruses (eg, respiratory syncytial virus [RSV], influenza virus, rhinovirus, enteroviruses, human metapneumovirus), M. pneumoniae, C. trachomatis or C. pneumoniae, anaerobes, fungi (eg, Blastomyces dermatitidis , Candida sp., Aspergillus sp.).

Neonate: Same as above plus Enterobacteriaceae (GNR), group B streptococcus (GPC).

Endotracheal intubation: Pseudomonas sp. (GNR), Klebsiella (GNR), Enterobacteriaceae (GNR).

Chronic: P. aeruginosa (GNR), anaerobes, M. tuberculosis (AFB).