It's not a "virus", no matter what "story" the media puts out! Answer this question. Why would one person amoung a group of people, in a public place, while at work, driving a vehicle, etc., be "singled out" to suddenly experience this nauseating, dizzying, incapacitating, and severe "vertigo"? Much speculation on this subject, but no tangible physical evidence to support any ideas as to what is causing this, which makes the cause of these effects, not symptoms, "plausibly deniable". In other words, if you don't have physical evidence to support your theory on who or what is causing it, the masses will go with the "story" that the mass media puts out! Its like the story about the group of girls in the mid-west at a certain school who overnight started experiencing problems speaking, developed twitches, and other neurological problems. The media and the local officals gave out their story on what was causing this, which the masses believed because they have been conditioned to trust what they see and hear coming from the media. The story literally dissappeared from the news after that! Things like this happen all the time. Some people see through the lies and deception. Perhaps thats why they are "singled out" in a group of people, in a public place, in their vehicle, etc., etc., etc.?