RuSH was conducted within state health departments
to leverage their public health authority or legislative
mandate to access the wide variety of data sets that were
required to implement the activities of RuSH.18 The
states received 2 years of funding, although most
continued their work beyond this time period. A novel,
three-tiered case definition was developed for the project,
based on laboratory results and ICD-9 and ICD-10 codes.