Of the pathogens causing otitis media, which is MOST LIKELY to require antibiotic therapy?

Of the pathogens causing otitis media, which is MOST LIKELY to require antibiotic therapy?

• A. Haemophilus influenzae
• B. Streptococcus pneumoniae
• C. Moraxella catarrhalis
• D. Pseudomonas aeruginosa

Answer: (B)

Streptococcus pneumoniae is the pathogen most likely to prompt antibiotic therapy in acute otitis media because it tends to cause more virulent, symptom-producing middle-ear infections. This organism is a classic driver of significant inflammation and fever, leading clinicians to treat to relieve symptoms and prevent complications. Haemophilus influenzae and Moraxella catarrhalis can cause AOM as well, but they are often associated with milder presentations or mixed infections, and many cases respond to standard antibiotics. Pseudomonas aeruginosa is not a common cause of routine acute otitis media in healthy children and is more linked to chronic infections or specific settings, so it’s less likely to be the organism driving antibiotic therapy in a typical AOM scenario.

Streptococcus pneumoniae is the pathogen most likely to prompt antibiotic therapy in acute otitis media because it tends to cause more virulent, symptom-producing middle-ear infections. This organism is a classic driver of significant inflammation and fever, leading clinicians to treat to relieve symptoms and prevent complications. Haemophilus influenzae and Moraxella catarrhalis can cause AOM as well, but they are often associated with milder presentations or mixed infections, and many cases respond to standard antibiotics. Pseudomonas aeruginosa is not a common cause of routine acute otitis media in healthy children and is more linked to chronic infections or specific settings, so it’s less likely to be the organism driving antibiotic therapy in a typical AOM scenario.