When you can't quarantine at home: COVID-19 contact tracers aim to help

As an infectious disease nurse during the COVID-19 pandemic, Debbie Sorensen works as a memory detective on a tight deadline. The mystery she's trying to untangle is where an infected person has been and who's been with them. Her sleuthing tools include a telephone, a wall calendar and the firm, but calming voice that comes with 20 years of experience with the Salt Lake County Public Health Department in Salt Lake City.