Emergence of vancomycin-resistant enterococci at a university hospital in Taiwan: Persistence of multiple species and multiple clones
Journal
Infection Control and Hospital Epidemiology
Journal Volume
20
Journal Issue
12
Pages
828-833
Date Issued
1999
Author(s)
Abstract
OBJECTIVES: To describe the epidemiology of vancomycin-resistant enterococci (VRE) in a university hospital in Taipei, Taiwan. DESIGN: Retrospective review over a 27-month period, from March 1996 to May 1998. SETTING: A tertiary-care teaching hospital in Taiwan. PARTICIPANTS: Patients with VRE isolated from any body site. METHODS: Patients were identified through hospital microbiology and infection control records. Patient charts were reviewed for clinical and epidemiology data, including age, gender, previous hospital admissions, underlying diseases, types of infection, and recent antibiotic use. VRE isolates were characterized by their typical biochemical reactions, cellular fatty acid profiles, and the presence of van genes. Antibiotypes using the E-test and randomly amplified polymorphic DNA (RAPD) patterns of these isolates were used to determine the clonality. RESULTS: Twenty-five isolates of VRE recovered from 12 patients were identified. One patient with a perianal abscess had 12 isolates of VRE (4 Enterococcus faecalis, 7 Enterococcus faecium, and 1 Enterococcus casseliflavus) recovered from perianal lesions. Among 3 patients who were hospitalized in the same room, 1 had a community-acquired cellulitis over the left leg caused by E faecalis, and the other 2 patients both had anal colonization with 2 isolates of E faecalis. The other 8 patients had l E faecalis isolate each from various clinical specimens. All isolates possessed vanA resistance phenotype and vanA. genes. Different antibiotypes and RAPD patterns of the isolates from different patients excluded the possibility of nosocomial spread at the hospital. CONCLUSIONS: Multiple species of VRE (E faecalis, E faecium, and E casseliflavus) and multiple clones of E faecium could colonize or infect hospitalized patients. In addition, clones of VRE can persist long-term in patients' lower gastrointestinal tracts. These results extend our knowledge of the coexistence and the persistence of multiple species and multiple clones of VRE in hospitalized patients.
SDGs
Other Subjects
vancomycin; antibiotic resistance; article; classification; cross infection; drug effect; Enterococcus; genetics; human; isolation and purification; microbiology; polymerase chain reaction; retrospective study; Taiwan; university hospital; Cross Infection; Enterococcus; Hospitals, University; Humans; Polymerase Chain Reaction; Retrospective Studies; Taiwan; Vancomycin; Vancomycin Resistance
Type
journal article