Acute Otitis media in Children is most commonly due to: (A) Morexiello catarrhalis, (B) H. influenza, (C) Streptococcus pneumoniae, (D) Staphylococcus aureus
Answer is C. (C) Streptococcus pneumoniae # Causative Organisms of ASOM:> Most common organisms in infants and young children are Streptococcus pneumoniae (30%), Haemophilus influenzae (20%) and Moraxella catarrhalis (12%).> Other organisms include Streptococcus pyogenes, Staphylococcus aureus & sometimes Pseudomonas aeruginosa.> In about 18-20%, no growth is seen.> Many of the strains of H. influenzae & Moraxella catarrhalis are ft-lactamase producing.