Danielle Chiles

Brooklynn Chiles, 8, glances up from her smart phone at home where she lives with her mother, Danielle Mitchell in Washington, Sunday, Jan. 9, 2022. Brooklynn lost her father to COVID-19 last year and has tested positive three times herself. She is part of a NIH-funded multi-year study at Children's National Hospital to look at impacts of COVID-19 on children's physical health and quality of life. (AP Photo/Carolyn Kaster)