Final answer:
The most common organisms responsible for otitis media are S. pneumoniae, Haemophilus influenzae, and Moraxella catarrhalis. Treatment involves antibiotics like amoxicillin.
Step-by-step explanation:
The most common organisms responsible for otitis media, which is an infection of the middle ear, are S. pneumoniae, Haemophilus influenzae, and Moraxella catarrhalis. These bacteria induce an inflammatory response in the middle ear, causing swelling, pus, and tissue damage.
Treatment for otitis media typically involves the use of antibiotics. The first-line drug is high-dose amoxicillin, but macrolides and cephalosporins may also be prescribed due to increasing antibiotic resistance. Vaccination against S. pneumoniae and influenza can help decrease the risk of otitis media.