From the Document: "The Indian Health Service (IHS) within the Department of Health and Human Services (HHS) is the lead federal agency charged with improving the health of American Indians and Alaska Natives. In FY2019, IHS provided health care to approximately 2.6 million eligible American Indians/Alaska Natives. Its total FY2020 annual appropriation was $6.2 billion. As of April 30, IHS has seen more than 3,000 positive tests for coronavirus among its service population. In particular, the Navajo Nation has experienced one of the largest outbreaks nationally."
CRS Insight, IN11333
Congressional Research Service: https://crsreports.congress.gov/