What is the typical microbiology of a sinus infection?
Acute rhinosinusitis has causative organisms similar to acute otitis media. 75 percent of culture obtained from antral puncture in patients with acute maxillary sinusitis contain either Streptococcus pneumoniae or Hemophilus influenza (both beta lactamase + and -). Moraxella catarrhalis is also a common pathogen, especially in children, where it rivals Hemophilus influenzae.
