Direct and Spillover Effects of Middle School Vaccination Requirements
We study the direct and spillover effects of state requirements that middle school youths obtain a tetanus, diphtheria, and pertussis (Tdap) booster prior to middle school entry. These mandates increased vaccine take-up by 29 percent and reduced pertussis (whooping cough) incidence in the population by a much larger 53 percent due to herd immunity effects. We also document cross-vaccine spillovers: the mandates increased adolescent vaccination for meningococcal disease and human papillomavirus (which is responsible for 98 percent of cervical cancers) by 8-34 percent, with particularly large effects for children from low SES households.
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Copy CitationChristopher S. Carpenter and Emily C. Lawler, "Direct and Spillover Effects of Middle School Vaccination Requirements," NBER Working Paper 23107 (2017), https://doi.org/10.3386/w23107.
Published Versions
Christopher S. Carpenter & Emily C. Lawler, 2019. "Direct and Spillover Effects of Middle School Vaccination Requirements," American Economic Journal: Economic Policy, vol 11(1), pages 95-125.