Two main types of enterococci were found: Enterococcus faecalis (8% resistant to vancomycin, 37% resistant to gentamicin, 3% resistant to ampicillin, almost completely resistant to quinupristin–dalfopristin and E. faecium [80% resistant to vancomycin, 87% resistant to ampicillin, 60% resistant to gentamicin, 22% resistant to quinupristin–dalfopristin]. Patients with vancomycin-resistant bacteria were more likely than those without resistant bacteria to have underlying illnesses, a higher APACHE II score, a recent surgical procedure, longer hospitalization, treatment with drugs that interfere with immunity to infection, and antibiotic treatment within 14 days before enterococcal bacteremia. Nineteen percent of the patients died within 14 days. Factors associated with death included vancomycin-resistant enterococci, severity of illness (indicated by APACHE II score), and cancer of the blood. Patients who received appropriate antibiotic therapy for enterococcal bacteremia within 48 hours of recognition of infection were much less likely to die of the infection than those who did not receive appropriate therapy.