Guest: Lydia Greene, student nurse

For a long while, Lydia Greene would forgo many vaccines for her and her children, believing them akin to poison. A mother of three and a former quality-control chemist for a pharmaceutical plant, Greene called herself an anti-vaxxer. But when COVID-19 put vaccine safety into the spotlight, she decided to dig deeper into the research and concluded she might actually be wrong. She talks to "This Matters" about how she got from there to here, what it was like to administer her first vaccine as a student nurse and about grappling with that very human quandary of what it feels like to realize you're wrong.

This episode is produced by Alex Boyd, Julia De Laurentiis Johnston and Sean Pattendon