Three more cases of the new coronavirus were confirmed in the U.S. on Sunday, all in California, bringing the total number of people in the country with the disease to 11. The weekend also saw the first death blamed on the flu-like illness outside of China.

As of Monday evening there were more than 20,000 confirmed cases in more than two dozen countries, the vast majority of them in China, according to the World Health Organization. There have been at least 425 deaths in China, and one in the Philippines.

U.S. officials declared a public health emergency last week and, as a result, foreign nationals who have traveled to China in the last two weeks and aren't immediate family members of U.S. citizens or permanent residents will be temporarily banned from entering the U.S. Under the orders of Health and Human Services Secretary Alex Azar, anyone entering the U.S. who has been in China's Hubei province in the last two weeks will be subject to a two-week quarantine.