When I first opened my daycare I wasn't that concerned about unimmunized children as I had older children but 8 years later have become a germophobe. That tends to happen in daycare, doesn't it?lol I've become more concerned about the issue since. I currently have one 4 yo that is unimmunized but will not accept any more. I now accept children as young as 12 months and I worry about them contracting a disease.