Subject(s)

Enterococcus faecalis/drug effects , Enterococcus faecium/drug effects , Gram-Positive Bacterial Infections/epidemiology , Vancomycin Resistance , Classification , Electrophoresis, Gel, Pulsed-Field , Enterococcus faecalis/genetics , Enterococcus faecalis/pathogenicity , Enterococcus faecium/genetics , Enterococcus faecium/pathogenicity , Hospitals/statistics & numerical data , Humans , Mexico/epidemiology , Retrospective Studies