First Isolation of Methicillin-Resistant Livestock-Associated Staphylococcus aureus CC398 and CC1 in Intensive Pig Production Farms in Argentina Navegación de entradas Outbreak of Serratia marcesens co-producing NDM-1 plus OXA-48-like carbapenemases in anInterzonal General Hospital Novel Metallo Beta-Lactamase blaCVI-1 Isolated from a Chromobaterium violaceum Clinical Strain Resistant to Colistin