Hi there and thank you for your question. I appreciate your concern regarding this matter and I ll try to help where I can. If one sustains a superficial scratch on the skin, then you should look out for signs of infection at around the third day after the injury. These signs include redness around the site of the wound, pus discharging from the wound itself or generalized fever experienced by the patient. If you start to notice these signs, then I would suggest that you see your doctor as soon as you can so that they may prescribe the appropriate treatment for this issue. In order to prevent an infection from occurring you can continue with the following care. You can clean the wound with a saline solution (salt water) 3 times a day until the wound has made a scab over it. You can then let the area granulate on its own. I hope this helps and good luck.