The Australian study supports my belief that tiny toilets on trains trap germs. Years ago I got the flu after a trip from NYC to Albuquerque. I am convinced that it came from the Superliner toilets. They are tiny rooms. It's impossible to avoid touching surfaces. If a conventional virus can be spread that way, it seems logical that Covid can spread under the same conditions. And how often are toilets sanitized? A Roomette or Bedroom should be safer if you start at an endpoint. Presumably they've been sanitized but boarding along the line is different. What protocols do attendants follow? Are single use gloves used each time a room is cleaned?