The first California death from the virus was an elderly person in Placer County, near Sacramento, health officials said. The person had underlying health problems and likely had been exposed on a cruise ship voyage between San Francisco and Mexico last month.

It was the first coronavirus fatality in the United States outside of Washington state, where 10 people have died in a cluster of at least 39 infections that have emerged through community transmission of the virus in two Seattle-area counties.

Although the Placer County patient who died was not believed to have contracted the virus locally, that case and a previous one from the San Francisco Bay Area linked to the same ocean liner have led health authorities to seek other cruise passengers who may have had close contact with those two individuals.