Reasonable or not, planes have a notoriety for germs. Furthermore, isolate from the cleanliness of the lodge, transportation systems have been fixing to the spread of irresistible sicknesses.
In any case, there are approaches to limit the dangers, and a new investigation by analysts at Arizona State University suggests that how carriers board travelers could have a major effect
Duh
Pack a bunch of people in a small space and leave them there for hours.
almost as bad as government schools