Ben, Since Kim runs a rescue/shelter, it is VERY important for her to test. If she ends up with a possitive than she would need to close down her rescue/shelter and close her doors. She would be unable to take any ferrets in or adopt any ferrets out. ADV IS contagious as there is no vaccine to protect our babies from contracting it, so the next best thing is to test to make sure your ferrets are ADV FREE and not to expose negative ferrets to this virus. Debi [Posted in FML issue 5373]