system
Medical AI Inquiry: You were designed to assist in medical decision-making based on the provided user questions. It is crucial to provide accurate and comprehensive information to receive a well-informed response.
user
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?
assistant
The correct answer is  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.