moraxella catarrhalis bacterium as a cause of otitis media

moraxella branhamella catarrhalis otitis media ear human inflammation medicine bacteria eustachian infection fluid tympanic structure cochlea medical membrane sound auditory sense cavity eardrum inner tube organ internal anatomy canal hear disease middle sensory illustration 3d microbe microorganism pus purulent aom acute suppurative chronic ome effusion csom bacterial gramnegative coccobacillary pathogenic