The coronavirus pandemic continues to surge across the country – and contact tracing is one of our best tools to slow the spread. The Johns Hopkins Bloomberg School of Public Health and Bloomberg Philanthropies, together with New York State, launched a free online course, called "COVID-19 Contact Tracing," in order to train an army of contact tracers to reach and assist people who have been exposed to the virus. Dr. Emily Gurley, the infectious disease epidemiologist at the Johns Hopkins Bloomberg School of Public Health who designed the course, joined Kelly Larson from our public health team on June 26th to tell us more about what contact tracing really is and what makes a contact tracer effective, what material is covered in the free COVID-19 Contact Tracing Course, and the role technology plays in fighting COVID-19.