Hi, my son was diagnosed with Impetigo on his right hand. The pediatrician prescribed Keflex, TID, and Mupirocin 2% ointment, BID; as well as soaking the area twice a day in warm water with peroxide, and to remove the crust that had begun to form. He also ordered a culture, I received the results this morning and they read: Moderate growth Staphylococcus aureus. What does this mean? He has not developed any breakouts elsewhere, and the area, although red, does not hurt him, and is no longer spreading.