Eight more Tokyo residents were confirmed to be infected with the coronavirus on Feb. 15, authorities said.

Six of them attended a New Year’s party on a “yakatabune” party boat. Another individual in his 40s worked on the party boat.

The party was held for independent taxi drivers in Tokyo. A taxi driver in his 70s had earlier been confirmed to be infected with the coronavirus. Others who attended the same party were also tested.

Four taxi drivers in their 50s to 80s, as well as two women in their 50s and 60s who live with two of the men, were confirmed to have the coronavirus.

The eighth case concerned a company employee in his 40s who had not visited either Hubei or Zhejiang provinces in China, where the highest number of infections have occurred, during the past two weeks.