I'm so sorry you're going through this. It's why I never buy started birds from anyone and everyone here has to spray their shoes before entering (may not be perfect, but it's something)
I think they are safe to eat, but I want someone else who knows more about it to verify that for you. You may want to read through this thread by gumpsgirl about her bout with this from adding one chick that wasn't quarantined:
https://www.backyardchickens.com/forum/viewtopic.php?id=69444
I think they are safe to eat, but I want someone else who knows more about it to verify that for you. You may want to read through this thread by gumpsgirl about her bout with this from adding one chick that wasn't quarantined:
https://www.backyardchickens.com/forum/viewtopic.php?id=69444