1. Infection occurs within 30 days after the operation and infection involves only skin or subcutaneous tissue of the incision and at least one of the following:
2. Purulent drainage, with or without laboratory confirmation, from the superficial incision.
3. Organisms isolated from an aseptically obtained culture of fluid or tissue from the superficial incision.
4. At least one of the following signs or symptoms of infection: pain or tenderness, localized swelling, redness, or heat and the superficial incision are deliberately opened by the surgeon unless incision is culture-negative.
5. Diagnosis of superficial incisional SSI by the surgeon or attending physician.