Centers for Medicare and Medicaid Services graph, adapted by Ky. Health News Employees providing care at Kentucky nursing homes are among the least likely in the country to be vaccinated against the coronavirus, which has killed almost 2,500 people in those nursing homes.  The extent of the problem could be worse, because only about a third of the state's nursing homes have reported vaccination figures to the Centers for Medicare and Medicaid Services, which pays most of their costs and regulates them.  The latest update of the database, June 17, showed that 45.09 percent of the health-care employees at reporting nursing homes had been fully vaccinated for the virus. That was ninth lowest among the states.