Many biosecurity breaks exist in hygiene locks. In Canada, poultry abrn hygiene locks were equipped with cameras and thus the biosecurity breaks identified and counted: https://www.academia.edu/3762784/Description_of_44_biosecurity_errors_while_entering_and_exiting_poultry_barns_based_on_video_surveillance_in_Quebec_Canada
Do you have the same ranking of bisoecurity breaks in your country/production type?
