I am new to this site and I need help. Yesterday, I lost a two year old bred Nigerian doe to Listeria. I have raised goats for over twenty years and never had this happen. What do I need to do besides clean and disinfect? I have four more pregnant does that I am concern about and I do not want to lose them,too. I raise goats for our dairy needs and this scares me. Thanks for any advice you can give.