The tally, however, is incomplete. About 20 percent of the nation’s nursing homes did not report data to the federal government. The Centers for Medicare and Medicaid Services on Monday said early analysis shows homes with a history of infection-control and other health deficiencies were more likely to have covid-19 outbreaks.

Early analysis shows that facilities with a one-star quality rating were more likely to have large numbers of COVID-19 cases than facilities with a five-star quality rating. CMS will take enforcement action against the nursing homes that have not reported data into the CDC as required under CMS participation requirements.