FWIW, poultry farmers are in the same boat right now. After the millions of chickens and turkeys were slaughtered from disease several months ago, many poultry shows were cancelled. Farmers have been cautious for a long time - my understanding is that those belonging to the NPIP (National Poultry Improvement Program) don't allow the public to tour their facilities, and haven't for years. Many places keep disposable booties to go over shoes so disease isn't transferred via boots. Other places keep a tray full of disinfectant at the door that you step in before entering.

Do these measures help? I am honestly skeptical of the whole situation. Personally, I think a lot of the slaughter was gov. hype, but I'm just a homesteader. I don't own a commercial facility.