Coronavirus cases around the world have surpassed 95,000, and more than 3,000 people have died.
Outside of China, the worst outbreaks are in Korea, Italy, and Iran.
The UK has seen its first death from the virus and another cruise ship has been caught up in the outbreak.
Thirty-five passengers on the Grand Princess cruise ship have shown flu-like symptoms, and the boat is currently being held off the coast of San Francisco.
"I don't want to go home, I don't want to go home to my family because I don't want to take anything to them," one passenger on the ship said. "I don't want to take it to my city if I happen to have it on my clothes or whatever. I don't even know."
A 71-year-old man on an earlier leg of the cruise has since died from coronavirus, and two other passengers are sick in hospital.
Health officials say the more than 3000 people currently on board won't be allowed to disembark until test results are back.
"Once we have results from the tests, the CDC [Centres for Disease Control and Prevention] and the state will determine the most appropriate location for the ship to berth," said Mary Ellen Carroll, executive director of the San Francisco Department of Emergency Management.
Twelve people have now died from COVID-19 in the US - 11 in Washington, where half of the deaths have been linked to a nursing home.
In the UK, a patient at a Reading hospital has become the first fatality. The woman, who was in her 70s, hadn't been overseas.
"Our sympathies are very much with the victim and their family, but the situation is pretty much as it has been," said Britain's Prime Minister Boris Johnson.
Outside of China, Italy has the most Coronavirus deaths - now more than 100.
And classrooms are empty following a decision to close all schools for at least 10 days.
The World Health Organization is calling for global action.
"We're concerned that some countries have either not taken this seriously enough, or have decided there's nothing they can do," WHO director-general Tedros Adhanom said.
