Still unclear about contact tracing? We talk to Johns Hopkins epidemiologist and public health researcher Dr. Emily Gurley about contact tracing. Why is it important? And how you can help in the research. Opening music by: Scheming Weasel (faster version) by Kevin MacLeod Link: https://incompetech.filmmusic.io/song/4326-scheming-weasel-faster-version- License: http://creativecommons.org/licenses/by/4.0/