A 6 month old boy has had infections on and off since birth….
A 6 month old boy has had infections on and off since birth. His mother stopped breastfeeding about month ago, and since that time, the patient has been continuously and severely ill. He is admitted to an isolation bed in a pediatric specialty hospital. His doctor explains to his family the patient has “boy-in-the-bubble” disease or a combined T and B cell deficiency. What is the diagnosis?