Immunology A child’s immune system is his or her body’s natural defense against infection. Connecticut Children’s board-certified immunologists evaluate and treat infants, children and adolescents with a wide range of recurring, severe or unusual infections of the immune system. More than 140 of these complex conditions exist. At Connecticut Children’s, our top researchers are experienced in diagnosing, treating and managing conditions such as chronic granulomatous disease (CGD), hyper IgE syndrome (Job’s syndrome), velo-cardio-facial syndrome (VCFS)/Di George syndrome, common variable immunodeficiency (CVID), and a vast number of primary immune deficiency diseases. We also have access to cutting-edge studies and clinical trials that may benefit pediatric patients affected by immunodeficiency disorders.