Eliminating Nonmedical Exemptions from Vaccination in California
California became the first state in roughly 30 years to remove the provision allowing unvaccinated students to enter school with a nonmedical exemption. This research project broadly focuses on how parents, schools, and communities will be impacted by the law.
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Current Research Projects
- Change in medical exemption use after SB277
- Community composition change and its effect on vaccination and exemptions
Related Publications
- Delamater, P.L., Leslie, T.F., Y.T. Yang. 2017. Change in medical exemptions from immunization in California after elimination of personal belief exemptions. JAMA. 318(9):863–864.
- Delamater, P.L., Yang, Y.T., and T.F. Leslie. 2016. A spatiotemporal analysis of nonmedical exemptions from vaccination: California schools before and after SB277. Social Science & Medicine, Special Issue Section: 16th International Medical Geography Symposium. 168:230–238.
- Delamater, P.L., Leslie, T.F., and Y.T. Yang. 2016. California Senate Bill 277’s Grandfather Clause and Nonmedical Vaccine Exemptions in California, 2015–2022. JAMA Pediatrics. 170(6):619–620.
Current Collaborators
- Saad Omer (Emory Univeristy), Alison Buttenheim (University of Pennsylvania), Dal Salmon (Johns Hopkins University), Timothy Leslie (George Mason University), Y. Tony Yang (George Washington University)
Spatial and Temporal Aspects of Vaccine Hesitancy and Refusal
This research is broadly focused on spatial and temporal patterns of vaccine refusal (nonmedical exemptions) and vaccination coverage. I am extremely interested in not only who are not vaccinating their children (over space and time), but also how the behavior has evolved and how it has or could affect the health of populations.
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Current Research Projects
- The spatial and social clustering and diffusion of vaccine refusal
Related Publications
- Delamater, P.L., Leslie, T.F., and Y.T. Yang. 2018. Examining the spatiotemporal evolution of vaccine refusal: Nonmedical exemptions from vaccination in California, 2000-2013. BMC Public Health. 18(458):1–13.
- Leslie, T.F., Delamater, P.L., and Y.T. Yang. 2018. It could have been much worse: The Minnesota measles outbreak of 2017. Vaccine. 36(14):1808–1810.
- Leslie, T.F., Street E.J., Delamater, P.L., Yang, Y.T., and K.H. Jacobsen. 2016. Variation in Vaccination Data Available at School Entry Across the United States. American Journal of Public Health. 106(12):2180–2182.
- Delamater, P.L., Leslie, T.F., Yang, Y.T., and K.H. Jacobsen. 2016. An approach for estimating vaccination coverage for communities using school-level data and population mobility information. Journal of Applied Geography. 71:123–132.
- Yang, Y.T., Delamater, P.L., Leslie, T.F., and M.M. Mello. 2016. Sociodemographic Predictors of Vaccination Exemptions on the Basis of Personal Belief in California. American Journal of Public Health. 102(1):172–177.
Current Collaborators
- Saad Omer (Emory Univeristy), Alison Buttenheim (University of Pennsylvania), Dal Salmon (Johns Hopkins University), Timothy Leslie (George Mason University), Y. Tony Yang (George Washington University)
More coming soon…