Bernice Hausman is chair of the Department of Humanities in the Penn State College of Medicine. She’s recognized for her research on vaccines and breastfeeding, including why both can be controversial in the United States. She has written several books, most recently "Anti/Vax: Reframing the Vaccination Controversy," which was published last year. WPSU's Anne Danahy spoke with Hausman about what we can learn from past vaccine controversies about the COVID-19 epidemic.