Two more Japanese men were confirmed to have been infected with the new coronavirus after returning home from Wuhan on government-chartered planes late January, the health ministry said Tuesday.

The confirmation brought the total number of those who have tested positive for the deadly pneumonia-causing virus in Japan to 163, including 135 from a cruise ship quarantined in Yokohama.

The two men, one in his 40s and the other in his 50s, had tested negative in initial testing, according to the Ministry of Health, Labor and Welfare.