Brad Hoylman is a Democratic state senator in New York. He sponsored the 2019 legislation that eliminated nonmedical exemptions to school vaccine requirements. Arrange an interview through Avi Small.

Peter Hotez is dean of the National School of Tropical Medicine at the Baylor College of Medicine in Houston. He worked on research teams that developed vaccines for hookworm, schistosomiasis and SARS. Hotez is also the author of Vaccines Did Not Cause Rachel’s Autism: My Journey as a Vaccine Scientist, Pediatrician and Autism Dad.

Paul Harris is a Republican representative in the Washington House of Representatives. He sponsored the 2019 legislation ending the personal belief exemption to the state MMR vaccine requirement. Contact Kent Livingston to arrange an interview.

John Grabenstein is the associate director for scientific communications for the Immunization Action Coalition. He is the author of a 2013 review of religious teachings related to vaccines.

Sue Collins is a co-founder of the New Jersey Coalition for Vaccination Choice. She helped defeat the New Jersey Legislature’s effort to end religious exemptions to vaccine requirements. Arrange an interview through the coalition’s contact form.

James Colgrove is a professor of sociomedical sciences at Columbia University. He is the author of State of Immunity: The Politics of Vaccination in Twentieth-Century America.

Jan Birchfield is an expert on leadership, psychology and meditation. She recently launched a retreat center in Taos, New Mexico, offering guided meditation and assistance building a spiritual community. Arrange an interview through the contact form on her website.

Lisa Vig serves as a gambling addiction counselor for Lutheran Social Services of North Dakota.

Grace Barnes is a senior research scientist emeritus at the University at Buffalo in Buffalo, New York. She studies alcohol use, gambling behaviors and family issues.