DR P. MARAZZI / SCIENCE PHOTO LIBRARY DR P. MARAZZI / SCIENCE PHOTO LIBRARY
Close-up of the ear of a 3 year old male patient, showing pus from a middle ear infection (otitis media) and a perforated eardrum (tympanic membrane). Middle ear infection is cause by either a viral or bacterial infection which can cause earache, deafness, tinnitis and fever.
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