They fund and farm it out.
https://www.cdc.gov/prc/index.htm
PRC Network 2019-2024
Prevention Research Centers
CDC is pleased to introduce the new Prevention Research Centers (PRC) network for the 2019-2024 funding cycle. The PRC program funds 26 academic institutions to conduct applied public health prevention research. Funded PRCs will develop, test, and/or evaluate public health interventions for wide application, particularly in underserved communities, based on the latest science.
