The Air Force Safety Center is a Field Operating Agency with headquarters at Kirtland Air Force Base, N.M.
The Finnish researchers are unsure why the use of a pacifier might lead to an ear infection, but theorized it may have something to do with the change in pressure equilibrium inside the ear caused by the sucking.
Considerations of Ear Infections. The most common cause of a bacterial ear infection is allergies, which can cause the inner ear to become inflamed, as stated by the Petshed.com. The temperature and humidity in the ear canal is then increased, causing the perfect environment for bacterial growth.