<prompt> Patient is having scanty, foul smelling discharge from middle ear, develops fever, headache and neck rigidity. CT of the temporal lobe shows a localized ring enhancing lesion, which of the following is least likely cause of this condition?S. aureusPseudomonasS.PneumoniaeH. influenza  <response>: Commonest organisms in otogenic brain abscess include gram negative Proteus, E coli, Pseudomonas and anaerobic bacteria along with Staphylococcus and Pneumocci. H. Influenza infection is a rare cause of otogenic abscess. 