That's crazy. I have small kids and the doctors never give antibiotics. They just say it's something viral and to give Tylenol / Ibuprofen to treat discomfort. The daycare doesn't have any rule like that either they just check for fevers and they have to stay out until no fever for 24 hours. When one was really sick with croup they gave him some steroids but that's it. We have even switched doctors 3x and always been the case.