The place with the most novel coronavirus cases outside of China is a cruise ship in Japan qz.com

A cruise ship docked in Yokohama, Japan, recorded 41 new cases of the novel coronavirus today, taking the total number of infected passengers to 61.
The number of cases on the Diamond Princess now far exceeds that of any country outside of China, where the outbreak began.
As of today, Singapore has 28 cases, and Thailand and Japan (excluding the numbers on the cruise) both have 25.
A man who disembarked in Hong Kong on Jan. 25 was found to have the virus, prompting the quarantine.
A second cruise ship in Hong Kong is also under quarantine.