Abstract
A bacteriological study was carried out on middle ear discharge in 239 cases of acute purulent otitis media.
Two hundred and thirty strains (96.2%) of pathogenic bacteria were isolated from 239 cases with acute purulent otitis media.
The most frequent organism found solitary was Staphylococcus aureus (28.3% of 230 strains) and next frequency was Streptococcus pneumoniae (20.4%) followed by Staphylococcus epidermidis (11.7%), Haemophilus influenzae (10.9%) Streptococcus pyogenes (3.5%), and Pseudomonas aeruginosa (6.5%).
Streptococcus pneumoniae were frequently found in patients with paracentesis. However, Staphylococcus aureus was frequently found in patients with spontaneous perforation.
The cases with mixed infection were 17 cases (8%) out of 213 cases, and Staphylococcus aureus was found in 64.7%.
Especially, Staphylococcus aureus, Streptococcus pneumoniae and, Haemophilus influenzae were important pathogenic bacteria of acute purulent otitis media.
