Study Evaluating the Etiology of Intra-Abdominal Infections

Inclusion Criteria: * A case will be defined as an intra-abdominal abscess or peritoneal fluid culture that will be positive for enterococcus or an enterococcal bacteriemia in association with an intra-abdominal source of infection. * A control will be defined as a culture-positive intra-abdominal infection or bacteriemia due to an intraabdominal focus where enterococci have not been isolated. Exclusion Criteria: \-