As you know, inside Princess Cruise ship, 135 people have been infected with Coronavirus.
In addition, one Japanese has been back with the Japanese Government’s charter flight has been found positive on Coronavirus even though his previous 2 tests’ results were negative. He has been quarantined in a room in a hotel in Japan where some other people also came back from China by the Japanese Government charter flight are quarantined.
That means the most of 135 people on the cruise ship and a man newly infected in a quarantined hotel got Coronavirus through the air from the ventilators in the confined space either a cruise ship or a hotel.
A 50 year old Japanese man, who came back to Japan on February 29, had been tested negative on January 30 & February 8. But suddenly, on February 10, he has become positive. He has been quarantined in his room in a hotel since he came back to Japan on February 29. He got Coronavirus by inhaling Coronavirus contaminated air through ventilators?