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Middle Ear
Most ear infections form in the middle ear. The eustachian tube carries fluid from the middle ear to the throat. Sometimes during a cold, the eustachian tube becomes swollen and fluid is trapped in the middle ear. Bacteria or viruses can grow in this fluid and form an ear infection.
Current as of: April 15, 2020
Author: Healthwise Staff
Medical Review:Susan C. Kim MD - Pediatrics & Kathleen Romito MD - Family Medicine & E. Gregory Thompson MD - Internal Medicine
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