My son had strep 4 times in a year. Guess who always got it from him. Had his tonsils taken out and it now manifests on him now in a body rash. At the time we were living in a rural area next to a lake and had well water. The lake was always posted no swimming and on a fluke I took some water for the Dr to test. It had strep bacteria in it. We moved and the health dept closed the well. NO problems since.