Beset by a variety of diseases, numerous public health measures were advocated in late-nineteenth century Chile. Among these was the call for mandatory vaccination. Although the state supported programmes to encourage vaccination, these were voluntary. In the early 1880s, however, some legislators argued that compulsory vaccination would substantially reduce the death rate. Surprisingly, the legislature rejected this proposal. Claiming that the vaccination legislation would enhance the power of the executive branch, the congressmen soundly rejected an apolitical proposal designed to improve public health.