<prompt> Which one of the following microbe, found in ear discharge, has a high predilection for meningitisH. influenzaMoraxella speciesStaphylococcus aureusStreptococcus pneumoniae  <response>: Ans. d Streptococcus pneumoniae Ref: Dhingra 5th61, 81 Meningitis is the commonest intracranial complication of otitis media. In infants and children, otogenic meningitis usually follows acute otitis media while in adults, it is due to chronic middle ear infection. Most common organisms in infants and children are Streptococcus pneumonia 30, H. influenza 20, and Moraxella catarrhalis 12. Other organisms include Strep pyogenes, Staph aureus and Pseudomonas. Strep. Pneumoniae is also the most common cause of pyogenic meningitides in adults. 