<div>When Emily Whitehead was six years old, she became the first child ever to receive genetically-modified T cells, an experimental treatment for her leukemia. It cured her, and helped launch the field of cellular medicine. "Sunday Morning" contributor Kelefa Sanneh talks with Emily, and her parents, Kari and Tom Whitehead, about how they defeated her cancer; and with Dr. Siddhartha Mukherjee, a leading cancer specialist and author of the new book, "The Song of the Cell: An Exploration of Medicine and the New Human."</div>
<div>When Emily Whitehead was six years old, she became the first child ever to receive genetically-modified T cells, an experimental treatment for her leukemia. It cured her, and helped launch the field of cellular medicine.</div>
<div>The Centers for Disease Control and Prevention reports this flu season has gotten off to an early start. It's happening as hospitals are filling up with children suffering from the respiratory illness known as RSV.</div>
<div>In September, award-winning journalist Katie Couric shared publicly that she was diagnosed with breast cancer. She joins "CBS Mornings" during Breast Cancer Awareness Month to share the details of her treatment journey and the importance of annual screenings.</div>