As Japan grapples with the expanding new coronavirus outbreak, six more people — five in Tokyo and another in Aichi Prefecture — tested positive Sunday for the deadly virus, local authorities said.

During a news conference held Sunday evening, officials at the Tokyo Metropolitan Government said that two of the five were male acquaintances of a Tokyo taxi driver who tested positive Thursday after attending a party held Jan. 18 aboard a traditional yakatabune (traditional roofed party boat).

The third person was a male doctor who had contact with a female medical worker at the same hospital. She attended the same party as the taxi drivers and has tested positive, the government officials said.