The latest death, the nation’s second, was one of four new cases the county reported Sunday night. Three other patients are all listed in critical condition.

All of the newly confirmed cases were found in residents of LifeCare, the skilled nursing facility where a resident and an employees have already tested positive.

The four latest cases bring the total to 10 in King County, which includes Seattle. Washington Gov. Jay Inslee declared a state of emergency after the first death was announced.