Image Courtesy of marcolm at FreeDigitalPhotos.net Your immune system is what helps to fight off infections. But if the immune system is deficient in some way, a child or adult may experience recurrent infections. When it comes to ENT, such repeated infections may only involve the ear / sinus , or manifest itself as frequent URI. What are some key questions that may prompt an investigation for an immunodeficiency, especially if surgical management fails to resolve? • Need more than fo…