This Clinical Recommended Procedure deals with a comprehensive approach to the patient in the area of ​​prevention and treatment of infection at the surgical site and is divided into the following clinical areas: Recommendations for preoperative measures Recommendations for preoperative and/or intraoperative measures Recommendations for perioperative measures Recommendations for postoperative measures Recommendations for screening for extended spectrum beta-lactamase colonization and impact on surgical antibiotic prophylaxis.