In this July 31, 2021, file photo, passengers wearing face masks to help curb the spread of the coronavirus get on board a west-bound bullet train at Tokyo Station in Tokyo. Outside the Olympic bubble, fueled by the more contagious delta variant, infections in Tokyo have logged new daily records and nearly tripled in the first week after the Games opened on July 23. Japanese officials say the surge is unrelated to the Olympics. (Photo by Kantaro Komiya/AP Photo/File)
