_:vb50947558 . _:vb50947558 "A non-suppurative otitis media which is a collection of fluid that occurs in the middle ear space as a result of the negative pressure produced by altered Eustachian tube function. This can occur from viral upper respiratory infection or bacterial infection, or it can precede and/or follow acute bacterial otitis media."^^ . _:vb50947558 . _:vb50947558 . _:vb50947558 . _:vb50947558 . _:vb50947558 "url:http://en.wikipedia.org/wiki/Otitis_media#Otitis_media_with_effusion"^^ .