Dr. Jose Guevara – What Happens During An Ear Infection? An ear infection occurs in the middle ear. Normally, fluid in the middle ear drains down the Eastachian Tube and into the back of the throat. During an ear infection, the middle ear produces fluid that cannot be properly drained through the Eastachian Tube. Complete Full Script, Dialogue, Saying, Quotes, Words And Text For Dr. Jose Guevara – What Happens During an Ear Infection?