Study Evaluating the Safety and Efficacy of Tigecycline in Hospitalized Patients With cIAI

Inclusion Criteria: * Hospitalized male or female patients greater than or equal to 18 years of age. * Patients must be a candidate for or have had a laparotomy, or laparoscopy of an intra-abdominal abscess. * Patients with a complicated intra-abdominal infection such as: * an intra-abdominal abscess; * an intra-abdominal abscess (including liver and spleen) that develops in a post-operative patient after receiving \> 48 hours and less than or equal to 5 days of a non-study antibiotic. An intra-abdominal culture must be obtained from the infected site. * appendicitis complicated by perforation (grossly visible) and abscess and/or periappendiceal abscess; * perforated diverticulitis complicated by abscess formation or fecal contamination; * complicated cholecystitis with evidence of perforation or empyema; * perforation of the large or small intestine with abscess, or fecal contamination; * purulent peritonitis or peritonitis associated with fecal contamination; * gastric or duodenal ulcer perforation with symptoms lasting at least 24 hours prior to operation; * traumatic bowel perforation with symptoms lasting at least 12 hours prior to operation. Exclusion Criteria: * Patients with any concomitant condition that, in the opinion of the investigator, would preclude an evaluation of a response or make it unlikely that the contemplated course of therapy or follow-up visits could be completed. * Active or treated leukemia or systemic malignancy that required treatment with chemotherapy, immunotherapy, radiation therapy or antineoplastic therapy within the past 3 months, or any metastatic malignancy to the abdomen with life expectancy less than 6 months. * Anticipated length of antibiotic therapy less than 5 days.