Damn, dude, vsorry to hear....
Has it been discussed why the infection has come about and/or why it has become so powerful? Specifically, is this a result of something virtually unavoidable, or is there some sort of maltreatment -- intention or unintentional -- on your part or the clinics?
Did the doctor identify what exactly this "infection" is? Has your dermatologist?
What's done is, of course, done...at this point, all you can do, and all I can say, is to go see a good dermatologist ASAP and talk w/ your doctor ASAP and gather as much specific information as possible and make the best decision for treatment, which I assume is connected to the survival of your grafts.