Hello Mrs. McCullough, it's necessary to have a Dr. check on the sore if it's MRSA. However, you can't tell it's MRSA sore or not by looking at them, are you sure it's an MRSA infection? Covering the MRSA sore is not a treatment, but a way to prevent the spread. Your Dr. may not always treat the wound with antibiotics, but it doesn't mean you can handle the sore on your own.