Several states are debating whether to make HPV vaccinations mandatory for girls to protect against strains of human papillomavirus. Critics say parents should be able to choose whether their daughters receive the shots. Proponents say vaccinations could reduce the 10,000 cases of cervical cancer diagnosed each year.
Arthur Allen, author: Vaccine: The Controversial Story of Medicine's Greatest Lifesaver, Washington, D.C.
James Colgrove, author: State of Immunity: The Politics of Vaccination in Twentieth-Century America, assistant professor of sociomedical sciences, Mailman School of Public Health, Columbia University, New York, N.Y.
Moira Gaul, director of women's and reproductive health, Family Research Council, Washington, D.C.