<prompt> Acute Otitis media in Children is most commonly due toMorexiello catarrhalisH. influenzaStreptococcus pneumoniaeStaphylococcus aureus  <response>: 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. 