They didn’t understand why their kids kept getting sick. After a rare diagnosis, a new gene therapy offered hope.

Ava Langenhop was always sick.  From “the time she was born,” she was “just a sick baby,” the 9-year-old’s mother, Alicia Langenhop, told CBS News. She’d catch any cough or cold. Before she was two months old, she went to the hospital twice for viral infections. Ear infections were constant. Scraped knees turned into skin … Read more