A federal effort to arm nursing homes with rapid coronavirus tests is stumbling on concern the tests return false positives, putting at least one state at odds with federal officials over the value of the tests.
Nevada this month ordered nursing homes to stop using the point-of-care tests after they found more than 20 instances where positive findings were overturned by more precise assays. That was more than half of the positive samples re-tested. Other states are now questioning their accuracy as well.
Federal officials, meanwhile, said states don’t have the authority to bar the tests, and the