Four-year-old boy considered a pioneer with a rare genetic disorder

The remarkable story of a young boy whose diagnosis of a mysterious condition is expected to help solve future medical puzzles. Researchers recently discovered a new genetic disorder that caused 4-year-old Luke Terrio to produce no antibodies, resulting in an immune system so weak that he was constantly sick. His family shared their journey for answers and a diagnosis with CBS News’ Tara Narula. Source