We learned in nursing school that the family dog is often times a strep carrier and it can go undiagnosed for years. If you have a pet you might want to get it tested. Our neighbors kids got step all the time over and over again. When I mentioned it to her she looked at me like I was nuts. After having the dog tested and having it come back positive she said "Do you know how much money we could have saved if the Dr had just bothered to mention this". I don't know that Dr's are told this or not. I have four children and none of them ever had strep. Just lucky I guess! Ann in TN