This is a retrospective, non-comparative study, which will be performed after obtaining permission from the institutional review board. Patients with serious gram-positive infections who had received daptomycin from January 2009 and completed daptomycin therapy by the end of December 2010 will be screened, and patients who received ≥ 3 days of daptomycin will be identified eligible to be included. Eligible patients' medical records will be reviewed.
As this is a retrospective chart review, it is expected that informed consent will not be necessary. For patients' confidentiality concern, patients' name or chart number will not to be record in any part of Data Collection Form (APPENDIX 1). A patient identification number will be assigned to each patient included in this surveillance. A study coordinator at site will be identified, and hospital specific process will be utilized to identify patients. Information to be collected was shown on Data Collection Form (Appendix 1). After completing patient data collection, the efficacy and safety will be evaluated for the included cases.