hard to tell with viruses - how they are transmitted. I don't know for certain whether you can bring a virus with you but I think so, because mareks virus lives for years. It is in the dander shed with the feathers. It isn't killed by cold. There is a disinfectant, virkon, that supposedly kills it.
I don't have enough of a medical background to know, thats for sure!
Sounds like something that would be interesting to research. Seems any showings would be a death sentence if it was so easy to spread. Plus I want to know so we can all get together sometime.