Pulsed-field gel electrophoresis restriction fragment patterns of SmaI-digested genomic DNA obtained from glycopeptide-resistant Enterococcus faecium isolated at San Vicente de Paul Hospital, Bogotá, Colombia. Lane 1: a susceptible isolate of E. faecium; lane 2–24: Restriction patterns of the 23 VanA-type E. faecium. MWM, molecular weight marker.