Via the Japanese press:
A sudden spike in new coronavirus cases was confirmed among attendees at a New Year’s party for independent taxi drivers held on a traditional “yakatabune” river tour boat in the capital.
The Tokyo Metropolitan Government says the virus may be spreading in the capital, as people not at the party — including an office worker and a chauffeur — were also confirmed infected, and is calling for measures to prevent transmission. It provided information on the route of infection among party attendees at a Feb. 16 press conference.
The New Year’s party was held on Jan. 18 by a branch of a private taxi union based in Tokyo’s Jonan area, and was attended by about 70 taxi drivers and their families who dined on the boat. However, the windows were shut due to heavy rain, creating a confined space with insufficient ventilation — the kind of environment where disease spreads more easily.
The metropolitan government has been conducting tests on around 200 people involved in the party, on the assumption that the infection had spread on the yakatabune boat.
Jeez, if you planned to spread a virus then planting it at a taxi-driver convention would be at the top of your list: