You mentioned that the disease can live within an animal for several years and that it can take some time for the symptoms to show themselves. Is there a period of time in the disease's life cycle within an animal when it's more contagious than other times? An animal can appear healthy, but is it when it's maybe coughing, sneezing and showing signs of mucus that it's in the most contagious phase?
On December 4th, 2018. See this statement in context.