Infection is usually seen by a redness around a wound or cut, it might itch, or even hurt. Sometimes it can be pussy, and in severe cases smells terrible at which point this could develop into gangrene, and needs immediate medical attention. You can cut down infection by gently washing, drying, and applying a salve like Bacitracin, or Neosporin, and cover with a band-aid or gauze. Hope this helps.
