California has declared a state of emergency after announcing its first coronavirus death, bringing the US death toll from the disease to 11.
Officials said the 71-year-old man had underlying health conditions and had been on a cruise ship.
Eleven passengers and 10 crew members are potentially infected on board the Grand Princess now being held off the coast of California.
There are now at least 150 reported US patients with Covid-19 in 16 states.
Worldwide, authorities have confirmed more than 92,000 cases of the virus, of which more than 80,000 are in China.
More than 3,000 people have died globally, the vast majority in China where the virus originated.
