causes what we typically know as the stomach flu. it causes stomach upset, nash ya, vomiting, loose stools. it comes on fast and furious. known at the ferrari of stomach bugs. it hits quickly, knocks you out for a few days and spreads easily to other people. how does it spread? it s unique in that it can be spread from person-to-person. so if someone has the virus, stomach upset, it is shed in fecal matter and can be in the environment. so if you re around that person and touch a contaminated surface and then put your hands in your mouth you can get it. and if the person is vomiting, it is air saliva. from the vietnam mitt?-from the vomit?