What it's like to be part of a COVID-19 vaccine trial

With Moderna reporting encouraging early results from its COVID-19 vaccine candidate, we take a personal look at what it’s like to be part of the research process. The NewsHour’s John Yang is participating in Moderna’s clinical trials. He joins Judy Woodruff to discuss what motivated him to volunteer, how he has felt after each of the two shots and what comes next for the study's participants.