I've Had 10 Ring Worm In The Last 10 Months.

I've had 10 ring worm in the last 10 months. I just recently found another one. I am very clean and I am not sure why I keep getting them. At one point t I had moved out of my apartment thinking that it was something in the unit I occupied but when I got this new one I knew it was something else. Is there anything that I can take to stop them from coming. I don't have pets I have a 2year old that's not in daycare or school. Please any advise that will help.