"The tribal epidemiology centers were originally created to coordinate public health efforts between tribes and state and federal agencies. And under the Affordable Care Act, the centers are considered public health authorities on a par with state health departments and federal agencies such as the CDC. But Abigail Echo-Hawk, the director of the Urban Indian Health Institute, told POLITICO that the CDC has so far rebuffed the centers’ requests — telling her only that the data is nonpublic."