Anaemetro I.V. Infusion 500mg Drug Use Investigation

Inclusion Criteria: * Patients who have not used metronidazole (injection) in the past, and have been given this drug for treatment of anaerobic infection, infectious enterocolitis, or amebic dysentery. Patients who have used metronidazole (oral agent and vaginal tablet) in the past are eligible, and should not be excluded from this study. Exclusion Criteria: * No exclusion criteria are set out in this study.