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. Stream your PBS favorites with the PBS app: https://to.pbs.org/2Jb8twG Find more from PBS NewsHour at https://www.pbs.org/newshour Subscribe to our YouTube channel: https://bit.ly/2HfsCD6 Follow us: Facebook: http://www.pbs.org/newshour Twitter: / newshour Instagram: / newshour Subscribe: PBS NewsHour podcasts: https://www.pbs.org/newshour/podcasts Newsletters: https://www.pbs.org/newshour/subscribe