Separately, US Health and Human Services (HHS) Secretary Alex Azar told a Senate subcommittee there will likely be more cases in the United States, and he asked lawmakers to approve $2.5 billion in funding to fight the outbreak after proposing cuts to the department's budget.
"While the immediate risk to individual members of the American public remains low, there is now community transmission in a number of countries, including outside of Asia, which is deeply concerning," Azar said, adding that recent outbreaks in Iran and Italy were particularly worrying.
Believed to have originated from illegal wildlife sold in the Chinese city of Wuhan late last year, the new coronavirus has infected some 80,000 people and killed close to 2,700 in China.