I talk to the vet and he told me that while they are fighting this virus they are building antibotiys so thay won't be affected again. This is viral and no antibotic can help because it isn't bacterial. My father told me back when he was a boy they would sprinkle yellow sulfer around the coops...
I just got off the phone with my father in Texas,He has raised chickens his whole life.He told me in the early days when they didn't have all the treatment they do now they would sprinkle Yellow Sulpher in the coops and around the buildings. The chickens didn't mess with it, and the bugs didn't...