email article Topic: In the coming months, it's increasingly likely that airlines and events involving large groups of people will require proof of COVID-19 vaccination. As nations abroad begin implementing their own vaccine passport systems, some U.S. states are enacting outright bans, while others grapple with how to best move forward. Join MedPage Today and "Track the Vax" podcast host Serena Marshall live on Facebook as we speak with three experts to discuss how vaccine passports or verification might work, who would be tasked with creating them, and the legal and ethical considerations. Guests: Jenny Wanger, director of programs at the Linux Foundation Public Health; Brian Castrucci, DrPH, MA, an epidemiologist, public health practitioner, and president and CEO of the de Beaumont Foundation; and Carmel Shachar, JD, MPH, executive director of the Petrie-Flom Center for Health Law Policy, Biotechnology, and Bioethics at Harvard Law School.