The state of the antivaccine movement in the United States: A focused examination of nonmedical exemptions in states and counties

Olive, J. K., Hotez, P. J., Damania, A., & Nolan, M. S. (2018). The state of the antivaccine movement in the United States: A focused examination of nonmedical exemptions in states and counties. PLoS Medicine, 15(6). https://doi.org/10.1371/journal.pmed.1002578