1
|
Bager P, Kähler J, Andersson M, Holzknecht BJ, Kjær Hansen SG, Schønning K, Nielsen KL, Koch K, Pinholt M, Voldstedlund M, Larsen AR, Kristensen B, Mølbak K, Sönksen UW, Skovgaard S, Skov R, Hammerum AM. Comparison of morbidity and mortality after bloodstream infection with vancomycin-resistant versus -susceptible Enterococcus faecium: a nationwide cohort study in Denmark, 2010-2019. Emerg Microbes Infect 2024; 13:2309969. [PMID: 38258968 DOI: 10.1080/22221751.2024.2309969] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2023] [Accepted: 01/19/2024] [Indexed: 01/24/2024]
Abstract
The emergence of bloodstream infections (BSI) caused by vancomycin-resistant Enterococci (VRE) has caused concern. Nonetheless, it remains unclear whether these types are associated with an excess risk of severe outcomes when compared with infections caused by vancomycin-susceptible Enterococci (VSE). This cohort study included hospitalized patients in Denmark with Enterococcus faecium-positive blood cultures collected between 2010 and 2019 identified in the Danish Microbiology Database. We estimated 30-day hazard ratio (HR) of death or discharge among VRE compared to VSE patients adjusted for age, sex, and comorbidity. The cohort included 6071 patients with E. faecium BSI (335 VRE, 5736 VSE) among whom VRE increased (2010-13, 2.6%; 2014-16, 6.3%; 2017-19; 9.4%). Mortality (HR 1.08, 95%CI 0.90-1.29; 126 VRE, 37.6%; 2223 VSE, 37.0%) or discharge (HR 0.89, 95%CI 0.75-1.06; 126 VRE, 37.6%; 2386 VSE, 41.6%) was not different between VRE and VSE except in 2014 (HR 1.87, 95% CI 1.18-2.96). There was no interaction between time from admission to BSI (1-2, 3-14, and >14 days) and HR of death (P = 0.14) or discharge (P = 0.45) after VRE compared to VSE, despite longer time for VRE patients (17 vs. 10 days for VSE, P < 0.0001). In conclusion, VRE BSI was not associated with excess morbidity and mortality. The excess mortality in 2014 only may be attributed to improved diagnostic- and patient-management practices after 2014, reducing time to appropriate antibiotic therapy. The high level of mortality after E. faecium BSI warrants further study.
Collapse
Affiliation(s)
- Peter Bager
- Department of Epidemiology Research, Statens Serum Institut, Copenhagen, Denmark
| | - Jonas Kähler
- Department of Dataintegration and -Analysis, Statens Serum Institut, Copenhagen, Denmark
| | - Mikael Andersson
- Department of Epidemiology Research, Statens Serum Institut, Copenhagen, Denmark
| | - Barbara Juliane Holzknecht
- Department of Clinical Microbiology, Copenhagen University Hospital - Herlev and Gentofte, Herlev, Denmark
- Department of Clinical Medicine, University of Copenhagen, Copenhagen, Denmark
| | | | - Kristian Schønning
- Department of Clinical Microbiology, Copenhagen University Hospital - Rigshospitalet, Copenhagen, Denmark
| | - Karen Leth Nielsen
- Department of Clinical Microbiology, Copenhagen University Hospital - Rigshospitalet, Copenhagen, Denmark
| | - Kristoffer Koch
- Department of Clinical Microbiology, Aalborg University Hospital, Aalborg, Denmark
| | - Mette Pinholt
- Department of Clinical Microbiology, Copenhagen University Hospital - Amager and Hvidovre, Copenhagen, Denmark
| | - Marianne Voldstedlund
- Department of Dataintegration and -Analysis, Statens Serum Institut, Copenhagen, Denmark
- Division of Infectious Disease Preparedness, Statens Serum Institut, Copenhagen, Denmark
| | - Anders Rhod Larsen
- National Reference Laboratory for Antimicrobial Resistance, Statens Serum Institut, Copenhagen, Denmark
| | - Brian Kristensen
- Department of Infectious Disease Epidemiology and Prevention, Statens Serum Institut, Copenhagen, Denmark
| | - Kåre Mølbak
- Division of Infectious Disease Preparedness, Statens Serum Institut, Copenhagen, Denmark
- Department of Veterinary and Animal Sciences, Faculty of Health, University of Copenhagen, Denmark
| | - Ute Wolff Sönksen
- National Reference Laboratory for Antimicrobial Resistance, Statens Serum Institut, Copenhagen, Denmark
| | - Sissel Skovgaard
- Department of Clinical Microbiology, Copenhagen University Hospital - Herlev and Gentofte, Herlev, Denmark
- National Reference Laboratory for Antimicrobial Resistance, Statens Serum Institut, Copenhagen, Denmark
| | - Robert Skov
- Division of Infectious Disease Preparedness, Statens Serum Institut, Copenhagen, Denmark
- Department of Bacteria, Parasites, and Fungi, Statens Serum Institut, Copenhagen, Denmark
| | - Anette M Hammerum
- National Reference Laboratory for Antimicrobial Resistance, Statens Serum Institut, Copenhagen, Denmark
| |
Collapse
|
2
|
Zerbato V, Pol R, Sanson G, Suru DA, Pin E, Tabolli V, Monticelli J, Busetti M, Toc DA, Crocè LS, Luzzati R, Di Bella S. Risk Factors for 30-Day Mortality in Nosocomial Enterococcal Bloodstream Infections. Antibiotics (Basel) 2024; 13:601. [PMID: 39061283 PMCID: PMC11273391 DOI: 10.3390/antibiotics13070601] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2024] [Revised: 06/17/2024] [Accepted: 06/25/2024] [Indexed: 07/28/2024] Open
Abstract
Enterococci commonly cause nosocomial bloodstream infections (BSIs), and the global incidence of vancomycin-resistant enterococci (VRE) BSIs is rising. This study aimed to assess the risk factors for enterococcal BSIs and 30-day mortality, stratified by Enterococcus species, vancomycin resistance, and treatment appropriateness. We conducted a retrospective cohort study (2014-2021) including all hospitalized adult patients with at least one blood culture positive for Enterococcus faecalis or Enterococcus faecium. We included 584 patients with enterococcal BSI: 93 were attributed to vancomycin-resistant E. faecium. The overall 30-day mortality was 27.5%; higher in cases of BSI due to vancomycin-resistant E. faecium (36.6%) and vancomycin-sensitive E. faecium (31.8%) compared to E. faecalis BSIs (23.2%) (p = 0.016). This result was confirmed by multivariable Cox analysis. Independent predictors of increased mortality included the PITT score, complicated bacteremia, and age (HR = 1.269, p < 0.001; HR = 1.818, p < 0.001; HR = 1.022, p = 0.005, respectively). Conversely, male gender, consultation with infectious disease (ID) specialists, and appropriate treatment were associated with reduced mortality (HR = 0.666, p = 0.014; HR = 0.504, p < 0.001; HR = 0.682, p = 0.026, respectively). In conclusion, vancomycin-resistant E. faecium bacteremia is independently associated with a higher risk of 30-day mortality.
Collapse
Affiliation(s)
- Verena Zerbato
- Infectious Diseases Unit, Trieste University Hospital (ASUGI), 34125 Trieste, Italy
| | - Riccardo Pol
- Infectious Diseases Unit, Trieste University Hospital (ASUGI), 34125 Trieste, Italy
| | - Gianfranco Sanson
- Clinical Department of Medical, Surgical and Health Sciences, Trieste University, 34129 Trieste, Italy (S.D.B.)
| | - Daniel Alexandru Suru
- Sports and Exercise Medicine Division, Department of Medicine, University of Padova, 35128 Padua, Italy
| | - Eugenio Pin
- Medical Emergency Service, Trieste University Hospital (ASUGI), 34125 Trieste, Italy
| | - Vanessa Tabolli
- Department of Health Science, Section of Anaesthesiology and Intensive Care, University of Florence, 50139 Florence, Italy
| | - Jacopo Monticelli
- Infectious Diseases Unit, Trieste University Hospital (ASUGI), 34125 Trieste, Italy
| | - Marina Busetti
- Microbiology Unit, Trieste University Hospital (ASUGI), 34125 Trieste, Italy
| | - Dan Alexandru Toc
- Department of Microbiology, “Iuliu Hațieganu” University of Medicine and Pharmacy, 400012 Cluj-Napoca, Romania
| | - Lory Saveria Crocè
- Clinical Department of Medical, Surgical and Health Sciences, Trieste University, 34129 Trieste, Italy (S.D.B.)
- Liver Clinic, Trieste University Hospital (ASUGI), 34125 Trieste, Italy
| | - Roberto Luzzati
- Clinical Department of Medical, Surgical and Health Sciences, Trieste University, 34129 Trieste, Italy (S.D.B.)
| | - Stefano Di Bella
- Clinical Department of Medical, Surgical and Health Sciences, Trieste University, 34129 Trieste, Italy (S.D.B.)
| |
Collapse
|
3
|
Cimen C, Berends MS, Bathoorn E, Lokate M, Voss A, Friedrich AW, Glasner C, Hamprecht A. Vancomycin-resistant enterococci (VRE) in hospital settings across European borders: a scoping review comparing the epidemiology in the Netherlands and Germany. Antimicrob Resist Infect Control 2023; 12:78. [PMID: 37568229 PMCID: PMC10422769 DOI: 10.1186/s13756-023-01278-0] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2023] [Accepted: 07/19/2023] [Indexed: 08/13/2023] Open
Abstract
The rising prevalence of vancomycin-resistant enterococci (VRE) is a matter of concern in hospital settings across Europe without a distinct geographical pattern. In this scoping review, we compared the epidemiology of vancomycin-resistant Enterococcus spp. in hospitals in the Netherlands and Germany, between 1991 and 2022. We searched PubMed and summarized the national antibiotic resistance surveillance data of the two countries. We included 46 studies and summarized national surveillance data from the NethMap in the Netherlands, the National Antimicrobial Resistance Surveillance database in Germany, and the EARS-Net data. In total, 12 studies were conducted in hospitals in the Netherlands, 32 were conducted in German hospitals, and an additional two studies were conducted in a cross-border setting. The most significant difference between the two countries was that studies in Germany showed an increasing trend in the prevalence of VRE in hospitals, and no such trend was observed in studies in the Netherlands. Furthermore, in both Dutch and German hospitals, it has been revealed that the molecular epidemiology of VREfm has shifted from a predominance of vanA towards vanB over the years. According to national surveillance reports, vancomycin resistance in Enterococcus faecium clinical isolates fluctuates below 1% in Dutch hospitals, whereas it follows an increasing trend in German hospitals (above 20%), as supported by individual studies. This review demonstrates that VRE is more frequently encountered in German than in Dutch hospitals and discusses the underlying factors for the difference in VRE occurrence in these two neighboring countries by comparing differences in healthcare systems, infection prevention control (IPC) guidelines, and antibiotic use in the Netherlands and Germany.
Collapse
Affiliation(s)
- Cansu Cimen
- Institute for Medical Microbiology and Virology, University of Oldenburg, Oldenburg, Germany
- Department of Medical Microbiology and Infection Prevention, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
| | - Matthijs S Berends
- Department of Medical Microbiology and Infection Prevention, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
- Department of Medical Epidemiology, Certe Medical Diagnostics and Advice Foundation, Groningen, The Netherlands
| | - Erik Bathoorn
- Department of Medical Microbiology and Infection Prevention, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
| | - Mariëtte Lokate
- Department of Medical Microbiology and Infection Prevention, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
| | - Andreas Voss
- Department of Medical Microbiology and Infection Prevention, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
| | - Alex W Friedrich
- Department of Medical Microbiology and Infection Prevention, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
- University Hospital Muenster, University of Muenster, Muenster, Germany
| | - Corinna Glasner
- Department of Medical Microbiology and Infection Prevention, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands.
| | - Axel Hamprecht
- Institute for Medical Microbiology and Virology, University of Oldenburg, Oldenburg, Germany
| |
Collapse
|
4
|
Vancomycin-Resistant Enterococcus faecium and the emergence of new Sequence Types associated with Hospital Infection. Res Microbiol 2023; 174:104046. [PMID: 36858192 DOI: 10.1016/j.resmic.2023.104046] [Citation(s) in RCA: 13] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2022] [Revised: 02/16/2023] [Accepted: 02/20/2023] [Indexed: 03/02/2023]
Abstract
Enterococcus faecium is a major cause of vancomycin-resistant enterococcal (VRE) infection. New variants of the pathogen have emerged and become dominant in healthcare settings. Two such examples, vanB ST796 and vanA ST1421 sequence types, originally arose in Australia and proceeded to cause VRE outbreaks in other countries. Of concern is the detection of a vancomycin variable enterococcal (VVE) variant of ST1421 in Europe that exhibits a vancomycin-susceptible phenotype but which can revert to resistant in the presence of vancomycin. The recent application of genome sequencing for increasing our understanding of the evolution and spread of VRE is also explored here.
Collapse
|
5
|
Rathod SN, Bardowski L, Tse I, Churyla A, Fiehler M, Malczynski M, Qi C, Tanna SD, Bulger C, Al-Qamari A, Oakley R, Zembower TR. Vancomycin-resistant Enterococcus outbreak in a pre- and post-cardiothoracic transplant population: Impact of discontinuing multidrug-resistant organism surveillance during the coronavirus disease 2019 pandemic. Transpl Infect Dis 2022; 24:e13972. [PMID: 36169219 DOI: 10.1111/tid.13972] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2021] [Revised: 08/31/2022] [Accepted: 09/16/2022] [Indexed: 12/24/2022]
Abstract
INTRODUCTION Many institutions suspended surveillance and contact precautions for multidrug-resistant organisms (MDROs) at the outset of the coronavirus disease 2019 (COVID-19) pandemic due to a lack of resources. Once our institution reinstated surveillance in September 2020, a vancomycin-resistant Enterococcus (VRE) faecium outbreak was detected in the cardiothoracic transplant units, a population in which we had not previously detected outbreaks. METHODS An outbreak investigation was conducted using pulsed-field gel electrophoresis for strain typing and electronic medical record review to determine the clinical characteristics of involved patients. The infection prevention (IP) team convened a multidisciplinary process improvement team comprised of IP, cardiothoracic transplant nursing and medical leadership, environmental services, and the microbiology laboratory. RESULTS Between December 2020 and March 2021, the outbreak involved thirteen patients in the cardiothoracic transplant units, four index cases, and nine transmissions. Of the 13, seven (54%) were on the transplant service, including heart and lung transplant recipients, patients with ventricular assist devices, and a patient on extracorporeal membrane oxygenation as a bridge to lung transplantation. Four of 13 (31%) developed a clinical infection. DISCUSSION Cardiothoracic surgery/transplant patients may have a similar risk for VRE-associated morbidity as abdominal solid organ transplant and stem cell transplant patients, highlighting the need for aggressive outbreak management when VRE transmission is detected. Our experience demonstrates an unintended consequence of discontinuing MDRO surveillance in this population and highlights a need for education, monitoring, and reinforcement of foundational infection prevention measures to ensure optimal outcomes.
Collapse
Affiliation(s)
- Shardul N Rathod
- Department of Healthcare Epidemiology and Infection Prevention, Northwestern Memorial Hospital, Chicago, Illinois, USA
| | - Laura Bardowski
- Department of Healthcare Epidemiology and Infection Prevention, Northwestern Memorial Hospital, Chicago, Illinois, USA
| | - Isabella Tse
- Cardiac, Vascular, and Thoracic Stepdown, Northwestern Memorial Hospital, Chicago, Illinois, USA
| | - Andrei Churyla
- Division of Cardiac Surgery, Department of Surgery, Bluhm Cardiovascular Institute, Northwestern University Feinberg School of Medicine and Northwestern Medicine, Chicago, Illinois, USA
| | - Monica Fiehler
- Division of Cardiac Surgery, Department of Surgery, Bluhm Cardiovascular Institute, Northwestern University Feinberg School of Medicine and Northwestern Medicine, Chicago, Illinois, USA
| | - Michael Malczynski
- Department of Pathology, Northwestern University Feinberg School of Medicine, Clinical Microbiology Laboratory, Northwestern Memorial Hospital and Northwestern University Feinberg School of Medicine, Chicago, Illinois, USA
| | - Chao Qi
- Department of Pathology, Northwestern University Feinberg School of Medicine, Clinical Microbiology Laboratory, Northwestern Memorial Hospital and Northwestern University Feinberg School of Medicine, Chicago, Illinois, USA
| | - Sajal D Tanna
- Department of Medicine, Division of Infectious Diseases, Northwestern University Feinberg School of Medicine, Chicago, Illinois, USA
| | - Christine Bulger
- Department of Environmental Services and Patient Escort, Northwestern Memorial Hospital, Chicago, Illinois, USA
| | - Abbas Al-Qamari
- Division of Cardiac Surgery, Department of Surgery, Bluhm Cardiovascular Institute, Northwestern University Feinberg School of Medicine and Northwestern Medicine, Chicago, Illinois, USA.,Department of Anesthesiology, Northwestern University Feinberg School of Medicine, Chicago, Illinois, USA
| | - Robin Oakley
- Cardiac Transplant Intensive Care Unit, Northwestern Memorial Hospital, Chicago, Illinois, USA
| | - Teresa R Zembower
- Department of Healthcare Epidemiology and Infection Prevention, Northwestern Memorial Hospital, Chicago, Illinois, USA.,Department of Pathology, Northwestern University Feinberg School of Medicine, Clinical Microbiology Laboratory, Northwestern Memorial Hospital and Northwestern University Feinberg School of Medicine, Chicago, Illinois, USA.,Department of Medicine, Division of Infectious Diseases, Northwestern University Feinberg School of Medicine, Chicago, Illinois, USA
| |
Collapse
|
6
|
Yang MC, Wu YK, Lan CC, Yang MC, Chiu SK, Peng MY, Su WL. Antibiotic Stewardship Related to Delayed Diagnosis and Poor Prognosis of Critically Ill Patients with Vancomycin-Resistant Enterococcal Bacteremia: A Retrospective Cohort Study. Infect Drug Resist 2022; 15:723-734. [PMID: 35256846 PMCID: PMC8898016 DOI: 10.2147/idr.s354701] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2021] [Accepted: 02/18/2022] [Indexed: 11/24/2022] Open
Abstract
Purpose Patients with septicemia caused by vancomycin-resistant Enterococcus (VRE) bacteremia have higher mortality rates than patients infected by VSE. Vancomycin or teicoplanin is selected as the antibiotic stewardship intervention to cover methicillin-resistant Staphylococcus aureus infections before blood culture reveals VRE bacteremia in critically ill patients with Gram-positive cocci (GPC) bacteremia; this may require linezolid or daptomycin treatment instead. We thus evaluated antibiotic stewardship practices, such as appropriate timing of antibiotic use in GPC bacteremia, and clinical outcomes of critically ill patients with VRE infection. Patients and Methods This retrospective study enrolled 191 critically ill patients with enterococcal bacteremia at the Taipei Tzu Chi Hospital during January 1, 2019–December 31, 2020. Demographic and clinical characteristics, as well as disease outcomes and appropriate antibiotic use after GPC bacteremia diagnosis, were compared between the VRE and VSE groups. Results Of 191 patients, 55 had VRE bacteremia (case group) and 136 had VSE bacteremia (control group). The rate of antibiotic change after initial antibiotic use for GPC bacteremia was higher in the VRE bacteremia group (100% vs 10.3%; p<0.001). The time to appropriate antibiotic administration after GPC bacteremia diagnosis was longer in the VRE bacteremia group (3.3±2.1 vs 1.5±1.8 days; p<0.001). Patients with VRE bacteremia had higher 28-day mortality rates (relative risk, 1.997; 95% confidence interval [CI], 1.041–3.83). Multivariate Cox regression analysis showed that delayed appropriate antibiotic administration of >3 days after GPC bacteremia diagnosis increased the risks of 28-day all-cause mortality (adjusted hazard ratio, 2.045; 95% CI, 1.089–3.84; p=0.026) in patients with VRE infection. Conclusion Patients with VRE bacteremia with delayed appropriate antibiotic administration of >3 days after GPC bacteremia diagnosis had increased 28-day mortality risks. New strategies for early VRE detection in GPC bacteremia may shorten the time to administer appropriate antibiotics and lower mortality rates.
Collapse
Affiliation(s)
- Mu-Chun Yang
- Department of Internal Medicine, Taipei Tzu Chi Hospital, Buddhist Tzu Chi Medical Foundation, New Taipei City, Taiwan, Republic of China
- School of Medicine, Tzu Chi University, Hualien, Taiwan, Republic of China
| | - Yao-Kuang Wu
- School of Medicine, Tzu Chi University, Hualien, Taiwan, Republic of China
- Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, Taipei Tzu Chi Hospital, Buddhist Tzu Chi Medical Foundation, New Taipei, Taiwan, Republic of China
| | - Chou-Chin Lan
- School of Medicine, Tzu Chi University, Hualien, Taiwan, Republic of China
- Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, Taipei Tzu Chi Hospital, Buddhist Tzu Chi Medical Foundation, New Taipei, Taiwan, Republic of China
| | - Mei-Chen Yang
- School of Medicine, Tzu Chi University, Hualien, Taiwan, Republic of China
- Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, Taipei Tzu Chi Hospital, Buddhist Tzu Chi Medical Foundation, New Taipei, Taiwan, Republic of China
| | - Sheg-Kang Chiu
- School of Medicine, Tzu Chi University, Hualien, Taiwan, Republic of China
- Division of Infectious Disease, Department of Internal Medicine, Taipei Tzu Chi Hospital, Buddhist Tzu Chi Medical Foundation, New Taipei, Taiwan, Republic of China
| | - Ming-Yieh Peng
- Division of Infectious Disease, Department of Internal Medicine, Taipei Tzu Chi Hospital, Buddhist Tzu Chi Medical Foundation, New Taipei, Taiwan, Republic of China
| | - Wen-Lin Su
- School of Medicine, Tzu Chi University, Hualien, Taiwan, Republic of China
- Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, Taipei Tzu Chi Hospital, Buddhist Tzu Chi Medical Foundation, New Taipei, Taiwan, Republic of China
- Correspondence: Wen-Lin Su, Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, Taipei Tzu Chi Hospital, Buddhist Tzu Chi Medical Foundation, 289 Jianguo Road, Xindian District, New Taipei City, 23142, Taiwan, Republic of China, Tel +886-2-66289779, Fax +886-2-66289009, Email
| |
Collapse
|
7
|
Reinseth IS, Ovchinnikov KV, Tønnesen HH, Carlsen H, Diep DB. The Increasing Issue of Vancomycin-Resistant Enterococci and the Bacteriocin Solution. Probiotics Antimicrob Proteins 2021; 12:1203-1217. [PMID: 31758332 PMCID: PMC8613153 DOI: 10.1007/s12602-019-09618-6] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
Enterococci are commensals of human and other animals’ gastrointestinal tracts. Only making up a small part of the microbiota, they have not played a significant role in research, until the 1980s. Although the exact year is variable according to different geographical areas, this was the decade when vancomycin-resistant enterococci (VRE) were discovered and since then their role as causative agents of human infections has increased. Enterococcus faecium is on the WHO’s list of “bacteria for which new antibiotics are urgently needed,” and with no new antibiotics in development, the situation is desperate. In this review, different aspects of VRE are outlined, including the mortality caused by VRE, antibiotic resistance profiles, animal-modeling efforts, and virulence. In addition, the limitations of current antibiotic treatments for VRE and prospective new treatments, such as bacteriocins, are reviewed.
Collapse
Affiliation(s)
- Ingvild S Reinseth
- Department of Chemistry, Biotechnology and Food Science, Norwegian University of Life Sciences, P.O. Box 5003, 1432, Ås, Norway
| | - Kirill V Ovchinnikov
- Department of Chemistry, Biotechnology and Food Science, Norwegian University of Life Sciences, P.O. Box 5003, 1432, Ås, Norway
| | - Hanne H Tønnesen
- Section of Pharmaceutics and Social Pharmacy, Department of Pharmacy, University of Oslo, P.O. Box 1068 Blindern, 0316, Oslo, Norway
| | - Harald Carlsen
- Department of Chemistry, Biotechnology and Food Science, Norwegian University of Life Sciences, P.O. Box 5003, 1432, Ås, Norway
| | - Dzung B Diep
- Department of Chemistry, Biotechnology and Food Science, Norwegian University of Life Sciences, P.O. Box 5003, 1432, Ås, Norway.
| |
Collapse
|
8
|
Ghanem S, Kim CJ, Dutta D, Salifu M, Lim SH. Antimicrobial therapy during cancer treatment: Beyond antibacterial effects. J Intern Med 2021; 290:40-56. [PMID: 33372309 DOI: 10.1111/joim.13238] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/20/2020] [Revised: 11/22/2020] [Accepted: 12/01/2020] [Indexed: 02/07/2023]
Abstract
Cancer treatment options have evolved to include immunotherapy and targeted therapy, in addition to traditional chemoradiation. Chemoradiation places the patient at a higher risk of infection through a myelosuppressive effect. High clinical suspicion and early use of antimicrobials play a major role in decreasing any associated morbidity and mortality. This has led to a widespread use of antimicrobials in cancer patients. Antimicrobial use, however, does not come without its perils. Dysbiosis caused by antimicrobial use affects responses to chemotherapeutic agents and is prognostic in the development and severity of certain cancer treatment-related complications such as graft-versus-host disease and Clostridioides difficile infections. Studies have also demonstrated that an intact gut microbiota is essential in the anticancer immune response. Antimicrobial use can therefore modulate responses and outcomes with immunotherapy targeting immune checkpoints. In this review, we highlight the perils associated with antimicrobial use during cancer therapy and the importance of a more judicious approach. We discuss the nature of the pathologic changes in the gut microbiota resulting from antimicrobial use. We explore the effect these changes have on responses and outcomes to different cancer treatment modalities including chemotherapy and immunotherapy, as well as potential adverse clinical consequences in the setting of stem cell transplant.
Collapse
Affiliation(s)
- S Ghanem
- From the, Division of Hematology and Oncology, Department of Medicine, SUNY Downstate Health Sciences University, Brooklyn, NY, USA
| | - C J Kim
- From the, Division of Hematology and Oncology, Department of Medicine, SUNY Downstate Health Sciences University, Brooklyn, NY, USA
| | - D Dutta
- From the, Division of Hematology and Oncology, Department of Medicine, SUNY Downstate Health Sciences University, Brooklyn, NY, USA
| | - M Salifu
- From the, Division of Hematology and Oncology, Department of Medicine, SUNY Downstate Health Sciences University, Brooklyn, NY, USA
| | - S H Lim
- From the, Division of Hematology and Oncology, Department of Medicine, SUNY Downstate Health Sciences University, Brooklyn, NY, USA
| |
Collapse
|
9
|
Michelson K, Löffler B, Höring S. Time to positivity as a prognostic factor in bloodstream infections with Enterococcus spp. Diagn Microbiol Infect Dis 2021; 101:115396. [PMID: 34325178 DOI: 10.1016/j.diagmicrobio.2021.115396] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2021] [Revised: 04/06/2021] [Accepted: 04/10/2021] [Indexed: 10/21/2022]
Abstract
Time to positivity (TTP) is the delay of time from incubation to blood culture positivity. Short TTP can predict mortality and source of infection. The aim of this study was to investigate the value of TTP of patients with bloodstream infections with enterococci (E-BSI).In a single centre retrospective cohort study in Germany, the data of 244 patients with monomicrobial E-BSI were analyzed with hospital mortality as the primary outcome of interest from January 1 2014 to December 31 2016. Mortality rate of patients with bloodstream infections (BSI) with E. faecalis was 16.7%, Vancomycin sensitive E. faecium (VSEfm) 26.7% and Vancomycin resistant E. faecium (VREfm) 38.2%. Cut-offs showed a significantly higher mortality rate when compared to longer TTP (E. faecalis: P=0.047; VSEfm: P=0.02), but were not risk factors in survival analysis (E.faecalis: HR (hazard ratio): 2.73; P=0.17; VSEfm: HR: 1.63; P=0.15; VREfm: HR: 1.24; P=0.63). TTP≤10.5 hours with E. faecalis BSI was a discriminator for cardiovascular source of infection (AUC: 0.75). A short TTP could predict mortality rates and source of infection but was not an independent parameter for risk of death in survival analysis.
Collapse
Affiliation(s)
| | - Bettina Löffler
- Institute of Medical Microbiology, Jena University Hospital, Germany; Center for Sepsis Control and Care (CSCC), Jena University Hospital, Germany
| | - Steffen Höring
- Institute of Medical Microbiology, Jena University Hospital, Germany; Center for Sepsis Control and Care (CSCC), Jena University Hospital, Germany
| |
Collapse
|
10
|
Risk factors for development of vancomycin-resistant enterococcal bacteremia among VRE colonizers : A retrospective case control study. Wien Klin Wochenschr 2020; 133:478-483. [PMID: 32910333 DOI: 10.1007/s00508-020-01733-7] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2020] [Accepted: 08/11/2020] [Indexed: 10/23/2022]
Abstract
AIMS We aimed to determine the proportion of vancomycin-resistant enterococci (VRE) colonized patients among all inpatients who later developed VRE bacteremia during hospital stay and to identify the risk factors for VRE bacteremia at a tertiary hospital. MATERIAL AND METHODS Patients with positive rectal screening or any clinically significant positive culture results for VRE were included in 1‑year follow-up. Colonization with VRE was defined as a positive culture (rectal, stool, urinary) for VRE without infection and VRE bacteremia was defined as positive blood culture if the signs and symptoms were compatible with infection. To determine the risk factors for VRE bacteremia among VRE colonized patients, a retrospective case control study was performed. The two groups were compared in terms of variables previously defined as risk factors in the literature. RESULTS Of 947 positive samples, 17 VRE bacteremia were included in the analysis. Cephalosporin use for more than 3 days within 3 months was a significant risk factor for bacteremia (p = 0.008). Prior use of carbapenems was found to be statistically significant for bacteremia (p = 0.007). In multivariate analyses the use of carbapenems and cephalosporins was an independent risk factor for developing bacteremia among VRE colonizers (odds ratio, OR, 6.67; 95% confidence interval, CI, 1.30-34; p = 0.022 and OR 4.32, 95% CI 1.23-15; p = 0.022, respectively). CONCLUSION A VRE colonization in patients receiving broad-spectrum beta-lactam antibiotics including carbapenems and cephalosporins may result in bacteremia. It is possible to keep mortality at very low levels in VRE bacteremia with effective infection control measures, rapid infectious diseases consultation and rational antimicrobial treatment based on current epidemiological data.
Collapse
|
11
|
Bright M, Parfitt EC, Pasquill K, Steele L, Laupland KB. Occurrence and determinants of enterococcal bloodstream infections: a population-based study. Infect Dis (Lond) 2020; 52:638-643. [PMID: 32516011 DOI: 10.1080/23744235.2020.1774074] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/24/2022] Open
Abstract
Background: Although enterococci are common causes of bloodstream infections (BSIs), few studies have examined their epidemiology in non-selected populations.Objective: To examine the incidence and risk factors for development of enterococcal BSI.Methods: Surveillance for incident enterococcal BSI was conducted among all residents of the western interior of British Columbia, Canada during 2011-2018.Results: The overall annual incidence was 10.0 per 100,000 and was 6.6 and 2.7 per 100,000 for E. faecalis and E. faecium, respectively. Among the overall cohort of 145 incident cases of enterococcal BSI, 22 (15.2%) were community-associated, 63 (43.5%) were healthcare associated and 60 (41.4%) were hospital-onset. Enterococcal BSI was predominantly a disease of older adults with rare cases occurring among those aged less than 40 years. Males showed significantly increased risk compared to females (14.3 vs. 5.6 per 100,000; incidence rate ratio; IRR; 2.6; 95% confidence interval; CI; 1.8-3.8; p < .0001) and this was most pronounced with advanced age. Several co-morbid illnesses were associated with increased risk (IRR; 95% CI) for development of enterococcal BSI most importantly cancer (8.8; 6.0-12.9; p < .0001), congestive heart failure (5.7; 3.1-9.7; p < .0001), diabetes mellitus (4.4; 3.0-6.3; p < .0001) and stroke (3.7; 1.9-6.5; .0001). As compared to patients with E. faecalis, patients with E. faecium BSI were more likely to be of hospital-onset, more likely to have an intra-abdominal/pelvic focus, and trended towards higher 30-day case-fatality rate.Conclusions: Enterococci are relatively common causes of BSI. Although E faecalis and E faecium share commonalities they are epidemiologically distinguishable on several criteria.
Collapse
Affiliation(s)
- M Bright
- Department of Intensive Care Services, Royal Brisbane and Women's Hospital, Herston, Australia.,Faculty of Medicine, The University of Queensland, Brisbane, Australia
| | - E C Parfitt
- Department of Medicine, Royal Inland Hospital, Kamloops, Canada
| | - K Pasquill
- Department of Pathology and Laboratory Medicine, Royal Inland Hospital, Kamloops, Canada
| | - L Steele
- Department of Pathology and Laboratory Medicine, Royal Inland Hospital, Kamloops, Canada
| | - K B Laupland
- Department of Intensive Care Services, Royal Brisbane and Women's Hospital, Herston, Australia.,Department of Medicine, Royal Inland Hospital, Kamloops, Canada.,Department of Pathology and Laboratory Medicine, Royal Inland Hospital, Kamloops, Canada.,Faculty of Health, Queensland University of Technology, Brisbane, Australia
| |
Collapse
|
12
|
Impact of Daptomycin Minimum Inhibitory Concentration on Clinical Cure Rates for Vancomycin-Resistant Enterococcus Infections. INFECTIOUS DISEASES IN CLINICAL PRACTICE 2020. [DOI: 10.1097/ipc.0000000000000837] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
|
13
|
Health and economic burden of antimicrobial-resistant infections in Australian hospitals: a population-based model. Infect Control Hosp Epidemiol 2020; 40:320-327. [PMID: 30887942 DOI: 10.1017/ice.2019.2] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
OBJECTIVE To estimate the additional health and economic burden of antimicrobial-resistant (AMR) infections in Australian hospitals. METHODS A simulation model based on existing evidence was developed to assess the additional mortality and costs of healthcare-associated AMR Escherichia coli (E. coli), Klebsiella pneumoniae, Pseudomonas aeruginosa, Enterococcus faecium, and Staphylococcus aureus infections. SETTING Australian public hospitals. FINDINGS Australian hospitals spent an additional AUD$5.8 million (95% uncertainty interval [UI], $2.2-$11.2 million) per year treating ceftriaxone-resistant E.coli bloodstream infections (BSI), and an estimated AUD$5.5 million per year (95% UI, $339,633-$22.7 million) treating MRSA patients. There are no reliable estimates of excess morbidity and mortality from AMR infections in sites other than the blood and in particular for highly prevalent AMR E. coli causing urinary tract infections (UTIs). CONCLUSION The limited evidence-base of the health impact of resistant infection in UTIs limits economic studies estimating the overall burden of AMR. Such data are increasingly important and are urgently needed to support local clinical practice as well as national and global efforts to curb the spread of AMR.
Collapse
|
14
|
Dubler S, Lenz M, Zimmermann S, Richter DC, Weiss KH, Mehrabi A, Mieth M, Bruckner T, Weigand MA, Brenner T, Heininger A. Does vancomycin resistance increase mortality in Enterococcus faecium bacteraemia after orthotopic liver transplantation? A retrospective study. Antimicrob Resist Infect Control 2020; 9:22. [PMID: 32005223 PMCID: PMC6995054 DOI: 10.1186/s13756-020-0683-3] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2019] [Accepted: 01/22/2020] [Indexed: 02/07/2023] Open
Abstract
BACKGROUND The relevance of vancomycin resistance in enterococcal blood stream infections (BSI) is still controversial. Aim of this study was to outline the effect of vancomycin resistance of Enterococcus faecium on the outcome of patients with BSI after orthotopic liver transplantation (OLT). METHODS The outcome of OLT recipients developing BSI with vancomycin-resistant (VRE) versus vancomycin-susceptible Enterococcus faecium (VSE) was compared based on data extraction from medical records. Multivariate regression analyses identified risk factors for mortality and unfavourable outcomes (defined as death or prolonged intensive care stay) after 30 and 90 days. RESULTS Mortality was similar between VRE- (n = 39) and VSE- (n = 138) group after 30 (p = 0.44) or 90 days (p = 0.39). Comparable results occurred regarding unfavourable outcomes. Mean SOFANon-GCS score during the 7-day-period before BSI onset was the independent predictor for mortality at both timepoints (HR 1.32; CI 1.14-1.53; and HR 1.18; CI 1.08-1.28). Timely appropriate antibiotic therapy, recent ICU stay and vancomycin resistance did not affect outcome after adjusting for confounders. CONCLUSION Vancomycin resistance did not influence outcome among patients with Enterococcus faecium bacteraemia after OLT. Only underlying severity of disease predicted poor outcome among this homogenous patient population. TRIAL REGISTRATION This study was registered at the German clinical trials register (DRKS-ID: DRKS00013285).
Collapse
Affiliation(s)
- S Dubler
- Department of Anaesthesiology, Heidelberg University Hospital, Im Neuenheimer Feld 110, D-69120, Heidelberg, Germany.
| | - M Lenz
- Department of Anaesthesiology, Heidelberg University Hospital, Im Neuenheimer Feld 110, D-69120, Heidelberg, Germany.,Department of Anaesthesiology, Intensive Care and Emergency Medicine, Asklepios Clinics Hamburg, AK Wandsbek, Hamburg, Germany
| | - S Zimmermann
- Department of Infectious Diseases, Medical Microbiology and Hygiene, Division Bacteriology, Heidelberg University Hospital, Heidelberg, Germany
| | - D C Richter
- Department of Anaesthesiology, Heidelberg University Hospital, Im Neuenheimer Feld 110, D-69120, Heidelberg, Germany
| | - K H Weiss
- Department of Internal Medicine, Heidelberg University Hospital, Heidelberg, Germany
| | - A Mehrabi
- Department of Visceral and Transplant Surgery, Heidelberg University Hospital, Heidelberg, Germany
| | - M Mieth
- Department of Visceral and Transplant Surgery, Heidelberg University Hospital, Heidelberg, Germany
| | - T Bruckner
- Institute for Medical Biometry and Informatics, University of Heidelberg, Heidelberg, Germany
| | - M A Weigand
- Department of Anaesthesiology, Heidelberg University Hospital, Im Neuenheimer Feld 110, D-69120, Heidelberg, Germany
| | - T Brenner
- Department of Anaesthesiology, Heidelberg University Hospital, Im Neuenheimer Feld 110, D-69120, Heidelberg, Germany
| | - A Heininger
- Division Hospital and Environmental Hygiene Department of Infectious Diseases, Medical Microbiology and Hygiene, Heidelberg University Hospital, Heidelberg, Germany
| |
Collapse
|
15
|
Shikh EV, Morozova TE, Drozdov VN, Lazareva NB, Shatsky DA, Andrushchyshina TB, Lukina MV, Vartanova OA. Antimicrobial Treatment of Infective Endocarditis, Caused by Enterococcus Faecalis. RATIONAL PHARMACOTHERAPY IN CARDIOLOGY 2019. [DOI: 10.20996/1819-6446-2019-15-4-586-592] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
The frequency of infective endocarditis (IE) has increased 3 times over the past 30 years. The incidence of IE morbidity is recorded in all countries of the world and in the Russian Federation more than 40 people per 1 million population get sick. One of the most frequent causative agents of infective endocarditis is Enterococcus faecalis (E. faecalis), which takes the third place in the structure of the frequency of IE pathogens. Enterococcal IE remains a disease with high mortality, despite the emergence of new groups of antibacterial drugs. This review includes the results of studies of the efficacy and safety of various antimicrobial regimens of IE caused by E. faecalis. The analysis of data from foreign and native studies of antimicrobial treatment in patients with infective endocarditis, accompanied by enterococcal bacteremia is presented in the review. The search for literature performed by using medical databases: MEDLINE, EMBASE, eLIBRARY. The current review included studies of the efficacy and safety of antimicrobial treatment. The main antibiotic therapy regimens of IE caused by E. faecalis include 2 beta-lactam antibiotics or a combination of ampicillin and gentamicin, according to the results of 5 found studies. Found antimicrobial regimens significantly did not affect mortality. Data from international registries testify to the efficacy and safety of daptomycin monotherapy for enterococcal endocarditis. Linezolid and daptomycin are the main drugs of treating infective endocarditis caused by vancomycin-resistant enterococci. Native studies report of a high level of resistance of enterococcal strains to beta-lactam antibacterial drugs. The duration of fever, the frequency of surgical heart valves interventions, the duration of bacteremia are not fully represented in each of the studies, and it is difficult to evaluate these factors. Ampicillin+ceftriaxone and ampicillin+gentamicin are the main antimicrobial treatment regimens of enterococcal endocarditis. Efficacy of these regimens is not significantly different. Treatment of IE should be carried out taking into the epidemiological situation and the strain resistance.
Collapse
Affiliation(s)
- E. V. Shikh
- I.M. Sechenov First Moscow State Medical University (Sechenov University)
| | - T. E. Morozova
- I.M. Sechenov First Moscow State Medical University (Sechenov University)
| | - V. N. Drozdov
- I.M. Sechenov First Moscow State Medical University (Sechenov University)
| | - N. B. Lazareva
- I.M. Sechenov First Moscow State Medical University (Sechenov University)
| | - D. A. Shatsky
- I.M. Sechenov First Moscow State Medical University (Sechenov University)
| | | | - M. V. Lukina
- I.M. Sechenov First Moscow State Medical University (Sechenov University)
| | - O. A. Vartanova
- I.M. Sechenov First Moscow State Medical University (Sechenov University)
| |
Collapse
|
16
|
Ryu BH, Hong J, Jung J, Kim MJ, Sung H, Kim MN, Chong YP, Kim SH, Lee SO, Kim YS, Woo JH, Choi SH. Clinical characteristics and treatment outcomes of Enterococcus durans bacteremia: a 20-year experience in a tertiary care hospital. Eur J Clin Microbiol Infect Dis 2019; 38:1743-1751. [PMID: 31243595 DOI: 10.1007/s10096-019-03605-z] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2019] [Accepted: 05/28/2019] [Indexed: 11/25/2022]
Abstract
While the clinical characteristics and treatment outcomes of Enterococcus faecalis and E. faecium bacteremia are well known, those of E. durans bacteremia are still largely unclear. We retrospectively identified 80 adult E. durans bacteremia cases treated at our 2700-bed tertiary care hospital between January 1997 and December 2016. We compared the clinical characteristics and treatment outcomes of the adult patients with E. durans bacteremia (case group) with those of E. faecalis and E. faecium bacteremia cases (two control groups). The case and control groups were matched for sex, age, and date of onset of bacteremia. E. durans was responsible for 1.2% of all enterococcal bacteremia cases at our hospital. Of 80 cases, 39 (48.8%) had biliary tract infection and 18 (22.5%) had urinary tract infection. Community-onset bacteremia was more frequent in the case group than in the control groups (56.2% vs. 35.0% vs. 21.2%, p < 0.01). Infective endocarditis tended to be more common in the E. durans group (7.5% vs. 1.2% vs. 1.2%, p = 0.05). The majority of E. durans isolates were susceptible to penicillin (66/76, 86.8%), ampicillin (67/76, 88.2%), and vancomycin (75/76, 98.7%). The case group had significantly lower all-cause mortality (20.0% vs. 31.2% vs. 42.5%, p < 0.01) and bacteremia-related mortality (2.5% vs. 16.2% vs. 18.8%, p < 0.01) than the control groups. E. durans bacteremia mainly originates from the biliary or urinary tract and is associated with a lower risk of mortality.
Collapse
Affiliation(s)
- Byung-Han Ryu
- Department of Infectious Diseases, Gyeongsang National University Changwon Hospital, Changwon, Republic of Korea
| | - Jeongmin Hong
- Department of Infectious Diseases, Daegu Catholic University Medical Center, Daegu, Republic of Korea
| | - Jiwon Jung
- Department of Infectious Diseases, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - Min Jae Kim
- Department of Infectious Diseases, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - Heungsup Sung
- Department of Laboratory Medicine, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - Mi-Na Kim
- Department of Laboratory Medicine, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - Yong Pil Chong
- Department of Infectious Diseases, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - Sung-Han Kim
- Department of Infectious Diseases, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - Sang-Oh Lee
- Department of Infectious Diseases, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - Yang Soo Kim
- Department of Infectious Diseases, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - Jun Hee Woo
- Department of Infectious Diseases, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - Sang-Ho Choi
- Department of Infectious Diseases, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea.
| |
Collapse
|
17
|
Factors associated with acquisition of glycopeptide-resistant enterococci during a single-strain outbreak. Epidemiol Infect 2019; 147:e158. [PMID: 31063114 PMCID: PMC6518758 DOI: 10.1017/s0950268818003655] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Abstract
The aim of our study was to describe and to investigate the factors associated with glycopeptide-resistant enterococci (GRE) acquisition during a single-strain outbreak which occurred in several wards of hospital from September 2013 to January 2014. We designed a case–control study. Analyses were performed using Bayesian methods. Univariate logistic regressions with informative priors from published studies were conducted. A multivariate model was build including variables with a probability of odd-ratio exceeding one (Pr) >85% or <15%. Thirteen cases and 52 controls were recruited. The description of this outbreak highlighted the importance to quickly detect patients at risk of GRE carriage in order to implement the isolation measures and to transfer to dedicated department if they are effectively carriers. Following multivariate analysis, antibiotics during hospitalisation (Pr = 0.968), number of hospitalisation days in the year (Pr = 0.964), antacids intake (Pr = 0.878) (with a risk increase), immunosuppression (Pr = 0.026) and isolation measures (Pr = 0.003) (both with protective effect) were associated with GRE acquisition. The use of Bayesian statistics was useful because of our study's small population size and prior information availability.
Collapse
|
18
|
Belga S, Chiang D, Kabbani D, Abraldes JG, Cervera C. The direct and indirect effects of vancomycin-resistant enterococci colonization in liver transplant candidates and recipients. Expert Rev Anti Infect Ther 2019; 17:363-373. [PMID: 30977692 DOI: 10.1080/14787210.2019.1607297] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Introduction: Vancomycin-resistant enterococci (VRE) colonization and subsequent infection results in increased morbidity, mortality and use of health-care resources. The burden of VRE colonization in liver transplant candidates and recipients is significant. VRE colonization is a marker of gut dysbiosis and its impact on the microbiota-liver axis, may negatively affect graft function and result in negative outcomes pre- and post-transplantation. Areas covered: In this article we describe the epidemiology of VRE colonization, risk factors for VRE infection, health-care costs associated with VRE, with a focus on the impact of VRE colonization on liver transplant recipients' fecal microbiota, the therapeutic strategies for VRE decolonization and proposed pathophysiologic mechanisms of VRE colonization in liver transplant recipients. Expert opinion: VRE colonization results in a significant loss of bacterial microbiome diversity. This may have metabolic consequences, with low production of short-chain fatty acids which may, in turn, result in immune dysregulation. As antibiotics have failed to decolonize the gut, alternative strategies such as fecal microbiota transplantation (FMT), stimulation of intestinal antimicrobial peptides and phage therapy warrants future studies.
Collapse
Affiliation(s)
- Sara Belga
- a Department of Medicine, Division of Infectious Diseases , University of Alberta , Edmonton , Alberta , Canada
| | - Diana Chiang
- a Department of Medicine, Division of Infectious Diseases , University of Alberta , Edmonton , Alberta , Canada
| | - Dima Kabbani
- a Department of Medicine, Division of Infectious Diseases , University of Alberta , Edmonton , Alberta , Canada
| | - Juan G Abraldes
- b Department of Medicine, Division of Gastroenterology and Hepatology , University of Alberta , Edmonton , Alberta , Canada
| | - Carlos Cervera
- a Department of Medicine, Division of Infectious Diseases , University of Alberta , Edmonton , Alberta , Canada
| |
Collapse
|
19
|
Impact of Healthcare-Associated Infections on Length of Stay: A Study in 68 Hospitals in China. BIOMED RESEARCH INTERNATIONAL 2019; 2019:2590563. [PMID: 31119159 PMCID: PMC6500696 DOI: 10.1155/2019/2590563] [Citation(s) in RCA: 45] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 02/20/2019] [Accepted: 04/11/2019] [Indexed: 12/21/2022]
Abstract
Healthcare-associated infections (HAIs) not only bring additional medical cost to the patients but also prolong the length of stay (LOS). 2119 HAI case-patients and 2119 matched control-patients were identified in 68 hospitals in 14 primary sampling provinces of 7 major regions of China. The HAI caused an increase in stay of 10.4 days. The LOS due to HAI increased from 9.7 to 10.9 days in different levels of hospitals. There was no statistically significant difference in the increased LOS between different hospital levels. The increased LOS due to HAI in different regions was 8.2 to 12.6 days. Comparing between regions, we found that the increased LOS due to HAI in South China is longer than other regions except the Northeast. The gastrointestinal infection (GI) caused the shortest extra LOS of 6.7 days while the BSI caused the longest extra LOS of 12.8 days. The increased LOS for GI was significantly shorter than that of other sites. Among 2119 case-patients, the non-multidrug-resistant pathogens were detected in 365 cases. The average increased LOS due to these bacterial infections was 12.2 days. E. coli infection caused significantly shorter LOS. The studied MDROs, namely, MRSA, VRE, ESBLs-E. coli, ESBLs-KP, CR-E. coli, CR-KP, CR-AB, and CR-PA were detected in 381 cases (18.0%). The average increased LOS due to these MDRO infections was 14 days. Comparing between different MDRO infections, we found that the increased LOS due to HAI caused by CR-PA (26.5 days) is longer than other MDRO infections (shorter than 19.8 days).
Collapse
|
20
|
Risk Factors and Outcomes of Vancomycin-Resistant Versus Vancomycin-Sensitive Enterococcal Bloodstream Infections in Patients With Acute Myeloid Leukemia. INFECTIOUS DISEASES IN CLINICAL PRACTICE 2019. [DOI: 10.1097/ipc.0000000000000710] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
|
21
|
Weber S, Hogardt M, Reinheimer C, Wichelhaus TA, Kempf VAJ, Kessel J, Wolf S, Serve H, Steffen B, Scheich S. Bloodstream infections with vancomycin-resistant enterococci are associated with a decreased survival in patients with hematological diseases. Ann Hematol 2019; 98:763-773. [PMID: 30666433 DOI: 10.1007/s00277-019-03607-z] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2018] [Accepted: 01/04/2019] [Indexed: 10/27/2022]
Abstract
Enterococcus species are commensals of the human gastrointestinal tract with the ability to cause invasive infections. For patients with hematological diseases, enterococcal bloodstream infections (BSI) constitute a serious clinical complication which may even be aggravated if the pathogen is vancomycin-resistant. Therefore, we analyzed the course of BSI due to vancomycin-susceptible enterococci (VSE) in comparison to vancomycin-resistant enterococci (VRE) on patient survival. In this retrospective single-center study, BSI were caused by VRE in 47 patients and by VSE in 43 patients. Baseline patient characteristics were similar in both groups. Concerning infection-related characteristics, an increased CRP value and an increased rate of prior colonization with multidrug-resistant organisms were detected in the VRE BSI group. More enterococcal invasive infections were found in the VSE group. The primary endpoint, overall survival (OS) at 30 days after BSI, was significantly lower in patients with VRE BSI compared to patients with VSE BSI (74.5% vs. 90.7%, p = 0.039). In a multivariate regression analysis, VRE BSI and a Charlson comorbidity index higher than 4 were independent factors associated with 30-day mortality. Moreover, we found that VRE with an additional teicoplanin resistance showed a trend towards an even lower OS.
Collapse
Affiliation(s)
- Sarah Weber
- Department of Hematology and Oncology, University Hospital Frankfurt, Frankfurt am Main, Germany. .,University Center for Infectious Diseases (UCI), University Hospital Frankfurt, Frankfurt am Main, Germany.
| | - Michael Hogardt
- University Center for Infectious Diseases (UCI), University Hospital Frankfurt, Frankfurt am Main, Germany.,Institute of Medical Microbiology and Infection Control, University Hospital Frankfurt, Frankfurt am Main, Germany.,University Center of Competence for Infection Control, University Hospital Frankfurt, Frankfurt am Main, Germany
| | - Claudia Reinheimer
- University Center for Infectious Diseases (UCI), University Hospital Frankfurt, Frankfurt am Main, Germany.,Institute of Medical Microbiology and Infection Control, University Hospital Frankfurt, Frankfurt am Main, Germany.,University Center of Competence for Infection Control, University Hospital Frankfurt, Frankfurt am Main, Germany
| | - Thomas A Wichelhaus
- University Center for Infectious Diseases (UCI), University Hospital Frankfurt, Frankfurt am Main, Germany.,Institute of Medical Microbiology and Infection Control, University Hospital Frankfurt, Frankfurt am Main, Germany.,University Center of Competence for Infection Control, University Hospital Frankfurt, Frankfurt am Main, Germany
| | - Volkhard A J Kempf
- University Center for Infectious Diseases (UCI), University Hospital Frankfurt, Frankfurt am Main, Germany.,Institute of Medical Microbiology and Infection Control, University Hospital Frankfurt, Frankfurt am Main, Germany.,University Center of Competence for Infection Control, University Hospital Frankfurt, Frankfurt am Main, Germany
| | - Johanna Kessel
- University Center for Infectious Diseases (UCI), University Hospital Frankfurt, Frankfurt am Main, Germany.,Department of Medicine, Infectious Diseases Unit, University Hospital Frankfurt, Frankfurt am Main, Germany
| | - Sebastian Wolf
- Department of Hematology and Oncology, University Hospital Frankfurt, Frankfurt am Main, Germany.,University Center for Infectious Diseases (UCI), University Hospital Frankfurt, Frankfurt am Main, Germany
| | - Hubert Serve
- Department of Hematology and Oncology, University Hospital Frankfurt, Frankfurt am Main, Germany.,University Center for Infectious Diseases (UCI), University Hospital Frankfurt, Frankfurt am Main, Germany
| | - Björn Steffen
- Department of Hematology and Oncology, University Hospital Frankfurt, Frankfurt am Main, Germany.,University Center for Infectious Diseases (UCI), University Hospital Frankfurt, Frankfurt am Main, Germany
| | - Sebastian Scheich
- Department of Hematology and Oncology, University Hospital Frankfurt, Frankfurt am Main, Germany.,University Center for Infectious Diseases (UCI), University Hospital Frankfurt, Frankfurt am Main, Germany
| |
Collapse
|
22
|
Kramer TS, Remschmidt C, Werner S, Behnke M, Schwab F, Werner G, Gastmeier P, Leistner R. The importance of adjusting for enterococcus species when assessing the burden of vancomycin resistance: a cohort study including over 1000 cases of enterococcal bloodstream infections. Antimicrob Resist Infect Control 2018; 7:133. [PMID: 30459945 PMCID: PMC6234683 DOI: 10.1186/s13756-018-0419-9] [Citation(s) in RCA: 51] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2018] [Accepted: 10/11/2018] [Indexed: 01/27/2023] Open
Abstract
Background Infections caused by vancomycin-resistant enterococci (VRE) are on the rise worldwide. Few studies have tried to estimate the mortality burden as well as the financial burden of those infections and found that VRE are associated with increased mortality and higher hospital costs. However, it is unclear whether these worse outcomes are attributable to vancomycin resistance only or whether the enterococcal species (Enterococcus faecium or Enterococcus faecalis) play an important role. We therefore aimed to determine the burden of enterococci infections attributable to vancomycin resistance and pathogen species (E. faecium and E. faecalis) in cases of bloodstream infection (BSI). Methods We conducted a retrospective cohort study on patients with BSI caused by Enterococcus faecium or Enterococcus faecalis between 2008 and 2015 in three tertiary care hospitals. Data was collected on true hospital costs (in €), length of stay (LOS), basic demographic parameters, and underlying diseases including the results of the Charlson comorbidity index (CCI). We used univariate and multivariable regression analyses to compare risk factors for in-hospital mortality and length of stay (i) between vancomycin-susceptible E. faecium- (VSEm) and vancomycin-susceptible E. faecalis- (VSEf) cases and (ii) between vancomycin-susceptible E. faecium- (VSEm) and vancomycin-resistant E. faecium-cases (VREm). We calculated total hospital costs for VSEm, VSEf and VREm. Results Overall, we identified 1160 consecutive cases of BSI caused by enterococci: 596 (51.4%) cases of E. faecium BSI and 564 (48.6%) cases of E. faecalis BSI. 103 cases of E. faecium BSI (17.3%) and 1 case of E. faecalis BSI (0.2%) were infected by vancomycin-resistant isolates. Multivariable analyses revealed (i) that in addition to different underlying diseases E. faecium was an independent risk factor for in-hospital mortality and prolonged hospital stay and (ii) that vancomycin-resistance did not further increase the risk for the described outcomes among E. faecium-isolates. However, the overall hospital costs were significantly higher in VREm-BSI cases as compared to VSEm- and VSEf-BSI cases (80,465€ vs. 51,365€ vs. 31,122€ p < 0.001). Conclusion Our data indicates that in-hospital mortality and infection-attributed hospital stay in enterococci BSI might rather be influenced by Enterococcus species and underlying diseases than by vancomycin resistance. Therefore, future studies should consider adjusting for Enterococcus species in addition to vancomycin resistance in order to provide a conservative estimate for the burden of VRE infections. Electronic supplementary material The online version of this article (10.1186/s13756-018-0419-9) contains supplementary material, which is available to authorized users.
Collapse
Affiliation(s)
- Tobias Siegfried Kramer
- 1Charité Universitätsmedizin Berlin, Institute of Hygiene and Environmental Medicine, Berlin, Germany.,National Reference Center for the Surveillance of Nosocomial Infections, Berlin, Germany
| | - Cornelius Remschmidt
- 1Charité Universitätsmedizin Berlin, Institute of Hygiene and Environmental Medicine, Berlin, Germany.,National Reference Center for the Surveillance of Nosocomial Infections, Berlin, Germany
| | - Sven Werner
- 3Department of Medical and Financial Controlling, Charité Universitätsmedizin Berlin, Berlin, Germany
| | - Michael Behnke
- 1Charité Universitätsmedizin Berlin, Institute of Hygiene and Environmental Medicine, Berlin, Germany.,National Reference Center for the Surveillance of Nosocomial Infections, Berlin, Germany
| | - Frank Schwab
- 1Charité Universitätsmedizin Berlin, Institute of Hygiene and Environmental Medicine, Berlin, Germany.,National Reference Center for the Surveillance of Nosocomial Infections, Berlin, Germany
| | - Guido Werner
- 4Robert Koch Institute, FG13 Nosocomial Pathogens and Antibiotic Resistance, Wernigerode, Germany.,National Reference Centre for Staphylococci and Enterococci, Berlin, Germany
| | - Petra Gastmeier
- 1Charité Universitätsmedizin Berlin, Institute of Hygiene and Environmental Medicine, Berlin, Germany.,National Reference Center for the Surveillance of Nosocomial Infections, Berlin, Germany
| | - Rasmus Leistner
- 1Charité Universitätsmedizin Berlin, Institute of Hygiene and Environmental Medicine, Berlin, Germany.,National Reference Center for the Surveillance of Nosocomial Infections, Berlin, Germany
| |
Collapse
|
23
|
Cheah ALY, Cheng AC, Spelman D, Nation RL, Kong DCM, McBryde ES. Mathematical modelling of vancomycin-resistant enterococci transmission during passive surveillance and active surveillance with contact isolation highlights the need to identify and address the source of acquisition. BMC Infect Dis 2018; 18:511. [PMID: 30309313 PMCID: PMC6182842 DOI: 10.1186/s12879-018-3388-y] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2017] [Accepted: 09/17/2018] [Indexed: 01/14/2023] Open
Abstract
Background Clinical studies and mathematical simulation suggest that active surveillance with contact isolation is associated with reduced vancomycin-resistant enterococci (VRE) prevalence compared to passive surveillance. Models using pre- and post-intervention data that account for the imperfect observation and serial dependence of VRE transmission events can better estimate the effectiveness of active surveillance and subsequent contact isolation; however, such analyses have not been performed. Methods A mathematical model was fitted to surveillance data collected pre- and post-implementation of active surveillance with contact isolation in the haematology-oncology ward. We developed a Hidden Markov Model to describe undetected and observed VRE colonisation/infection status based on the detection activities in the ward. Bayesian inference was used to estimate transmission rates. The effectiveness of active surveillance was assumed to be via increased detection and subsequent contact isolation of VRE positive patients. Results We estimated that 31% (95% credible interval: 0.33–85%) of the VRE transmissions were due to cross-transmission between patients. The ratio of transmission rates from patients with contact isolation versus those without contact isolation was 0.33 (95% credible interval: 0.050–1.22). Conclusions The majority of the VRE acquisitions in the haematology-oncology ward was estimated to be due to background rates of VRE, rather than within ward patient to patient acquisition. The credible interval for cross-transmission was wide which results in a large degree of uncertainty in the estimates. Factors that could account for background VRE acquisition include endogenous acquisition from antibiotic selection pressure and VRE in the environment. Contact isolation was not significantly associated with reduced VRE transmission in settings where the majority of VRE acquisition was due to background acquisition, emphasising the need to identify and address the source of acquisition. As the credible interval for the ratio of VRE transmission in contact isolated versus non-contact isolated patients crossed 1, there is a probability that the transmission rate in contact isolation was not lower. Our finding highlights the need to optimise infection control measures other than active surveillance for VRE and subsequent contact isolation to reduce VRE transmission. Such measures could include antimicrobial stewardship, environmental cleaning, and hand hygiene. Electronic supplementary material The online version of this article (10.1186/s12879-018-3388-y) contains supplementary material, which is available to authorized users.
Collapse
Affiliation(s)
- Agnes Loo Yee Cheah
- Centre for Medicine Use and Safety, Monash University, Parkville, VIC, Australia.,Department of Infectious Diseases, Alfred Health, Prahran, VIC, Australia
| | - Allen C Cheng
- Department of Infectious Diseases, Alfred Health, Prahran, VIC, Australia.,Infection Prevention and Healthcare Epidemiology Unit, Alfred Health, Prahran, VIC, Australia.,Department of Epidemiology and Preventive Medicine, School of Public Health and Preventive Medicine, Monash University, Melbourne, VIC, Australia
| | - Denis Spelman
- Department of Infectious Diseases, Alfred Health, Prahran, VIC, Australia.,Microbiology Unit, Alfred Health, Prahran, VIC, Australia.,Department of Infectious Diseases, Monash University, Melbourne, VIC, Australia
| | - Roger L Nation
- Drug Delivery, Disposition and Dynamics, Monash Institute of Pharmaceutical Sciences, Monash University, Parkville, VIC, Australia
| | - David C M Kong
- Centre for Medicine Use and Safety, Monash University, Parkville, VIC, Australia. .,Pharmacy Department, Ballarat Health Services, Ballarat Central, VIC, Australia. .,Victorian Infectious Diseases Service, Royal Melbourne Hospital, Melbourne, VIC, Australia.
| | - Emma S McBryde
- Victorian Infectious Diseases Service, Royal Melbourne Hospital, Melbourne, VIC, Australia. .,Department of Medicine, University of Melbourne, Melbourne, VIC, Australia.
| |
Collapse
|
24
|
Zhou MJ, Li J, Salmasian H, Zachariah P, Yang YX, Freedberg DE. The local hospital milieu and healthcare-associated vancomycin-resistant enterococcus acquisition. J Hosp Infect 2018; 101:69-75. [PMID: 30026006 DOI: 10.1016/j.jhin.2018.07.018] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2018] [Accepted: 07/11/2018] [Indexed: 02/01/2023]
Abstract
BACKGROUND Vancomycin-resistant enterococcus (VRE) causes 4% of all healthcare-associated infections in the USA. The process by which the local hospital milieu contributes to VRE acquisition is not fully understood. AIM To determine the importance of specific factors within the local hospital environment for healthcare-associated VRE acquisition. METHODS This retrospective cohort study included patients admitted to six intensive care units at an academic medical centre from January 2012 to December 2016 with negative rectal VRE cultures on admission. VRE acquisition was defined as a positive surveillance swab performed at any time after the initial negative swab during the index hospitalization. The exposures of interest were VRE colonization pressure, VRE importation pressure, and use of vancomycin. Multivariable Cox proportional hazards modelling was performed, with patients followed until VRE acquisition, death, or for up to 30 days. FINDINGS Of 8485 patients who were initially VRE negative, 161 patients acquired VRE. On univariate analysis, patients with VRE acquisition were more likely to have received vancomycin, to have had a neighbouring patient who received vancomycin, to have high VRE importation pressure, or to have high VRE colonization pressure. On multivariable analysis, only high VRE colonization pressure was an independent predictor of VRE acquisition (adjusted hazard ratio: 1.79; 95% confidence interval: 1.19-2.70). CONCLUSION VRE colonization pressure was the most important risk factor for healthcare-associated VRE acquisition, regardless of VRE importation pressure. Interventions seeking to reduce VRE acquisition should focus on minimizing transmission between patients with known VRE and the local hospital environment.
Collapse
Affiliation(s)
- M J Zhou
- Department of Medicine, Columbia University Medical Center, New York, NY, USA
| | - J Li
- Biomedical Informatics, Department of Medicine, Columbia University Medical Center, New York, NY, USA
| | - H Salmasian
- Data Science and Evaluation, Brigham and Women's Hospital, Boston, MA, USA
| | - P Zachariah
- Department of Pediatrics, Columbia University Medical Center, New York, NY, USA
| | - Y-X Yang
- Division of Gastroenterology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA
| | - D E Freedberg
- Division of Digestive and Liver Diseases, Columbia University Medical Center, New York, NY, USA.
| |
Collapse
|
25
|
Gray ME, Cox HL, Donohue LE, Poulter MD, Eby JC, Mathers AJ. The effect of rapid diagnostic testing with Infectious Diseases fellow consultative intervention on the management of enterococcal bloodstream infection. Diagn Microbiol Infect Dis 2018; 92:319-324. [PMID: 30145036 DOI: 10.1016/j.diagmicrobio.2018.07.004] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2017] [Revised: 06/25/2018] [Accepted: 07/03/2018] [Indexed: 12/19/2022]
Abstract
BACKGROUND Rapid diagnostics for enterococcal bloodstream infections (E-BSIs) can decrease the time to speciation and determination of vancomycin resistance but may not lead to improved antibiotic stewardship. METHODS Over 3 years, the time to administration of institutionally preferred antibiotics (IPT) for patients with E-BSI was evaluated and compared between 3 intervention groups: before (baseline) and after implementation of a rapid diagnostic (BC-GP), and the use of BC-GP with an Infectious Diseases (ID) fellow-driven consultative intervention (BC-GP + ID). RESULTS A total of 110 patients (63 baseline, 13 BC-GP, 34 BC-GP + ID) with E-BSI were evaluated. Evaluation of Enterococcus faecium BSI showed that the time IPT was significantly reduced with BC-GP + ID by 10.6 h from baseline (P = 0.02) and 5.4 h from BC-GP (P = 0.04). CONCLUSIONS An ID fellow-driven stewardship intervention was associated with a significant improvement in time to IPT for patients with E. faecium but not E. faecalis BSI.
Collapse
Affiliation(s)
- Megan E Gray
- Division of Infectious Diseases and International Health, University of Virginia Medical Center, Charlottesville, United States.
| | - Heather L Cox
- Division of Infectious Diseases and International Health, University of Virginia Medical Center, Charlottesville, United States; Department of Pharmacy, University of Virginia Medical Center, Charlottesville, Virginia, United States
| | - Lindsay E Donohue
- Department of Pharmacy, University of Virginia Medical Center, Charlottesville, Virginia, United States
| | - Melinda D Poulter
- Clinical Microbiology Laboratory, University of Virginia Medical Center, Charlottesville, Virginia, United States
| | - Joshua C Eby
- Division of Infectious Diseases and International Health, University of Virginia Medical Center, Charlottesville, United States
| | - Amy J Mathers
- Division of Infectious Diseases and International Health, University of Virginia Medical Center, Charlottesville, United States; Clinical Microbiology Laboratory, University of Virginia Medical Center, Charlottesville, Virginia, United States.
| |
Collapse
|
26
|
Collineau L, Carmo LP, Endimiani A, Magouras I, Müntener C, Schüpbach-Regula G, Stärk KDC. Risk Ranking of Antimicrobial-Resistant Hazards Found in Meat in Switzerland. RISK ANALYSIS : AN OFFICIAL PUBLICATION OF THE SOCIETY FOR RISK ANALYSIS 2018; 38:1070-1084. [PMID: 28973821 DOI: 10.1111/risa.12901] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/06/2017] [Revised: 08/02/2017] [Accepted: 08/11/2017] [Indexed: 06/07/2023]
Abstract
Human exposure to bacteria resistant to antimicrobials and transfer of related genes is a complex issue and occurs, among other pathways, via meat consumption. In a context of limited resources, the prioritization of risk management activities is essential. Since the antimicrobial resistance (AMR) situation differs substantially between countries, prioritization should be country specific. The objective of this study was to develop a systematic and transparent framework to rank combinations of bacteria species resistant to selected antimicrobial classes found in meat, based on the risk they represent for public health in Switzerland. A risk assessment model from slaughter to consumption was developed following the Codex Alimentarius guidelines for risk analysis of foodborne AMR. Using data from the Swiss AMR monitoring program, 208 combinations of animal species/bacteria/antimicrobial classes were identified as relevant hazards. Exposure assessment and hazard characterization scores were developed and combined using multicriteria decision analysis. The effect of changing weights of scores was explored with sensitivity analysis. Attributing equal weights to each score, poultry-associated combinations represented the highest risk. In particular, contamination with extended-spectrum β-lactamase/plasmidic AmpC-producing Escherichia coli in poultry meat ranked high for both exposure and hazard characterization. Tetracycline- or macrolide-resistant Enterococcus spp., as well as fluoroquinolone- or macrolide-resistant Campylobacter jejuni, ranked among combinations with the highest risk. This study provides a basis for prioritizing future activities to mitigate the risk associated with foodborne AMR in Switzerland. A user-friendly version of the model was provided to risk managers; it can easily be adjusted to the constantly evolving knowledge on AMR.
Collapse
Affiliation(s)
| | - Luís Pedro Carmo
- Veterinary Public Health Institute, Vetsuisse, University of Bern, Bern, Switzerland
| | - Andrea Endimiani
- Institute for Infectious Diseases, University of Bern, Bern, Switzerland
| | - Ioannis Magouras
- Veterinary Public Health Institute, Vetsuisse, University of Bern, Bern, Switzerland
| | - Cedric Müntener
- Institut für Veterinärpharmakologie und -toxikologie, Vetsuisse, University of Zurich, Zurich, Switzerland
| | | | - Katharina D C Stärk
- SAFOSO AG, Bern Liebefeld, Switzerland
- Royal Veterinary College, Hawkshead Lane, North Mymms, UK
| |
Collapse
|
27
|
Choe PG, Koo HL, Yoon D, Bae JY, Lee E, Hwang JH, Song KH, Park WB, Bang JH, Kim ES, Kim HB, Park SW, Oh MD, Kim NJ. Effect of an intervention targeting inappropriate continued empirical parenteral vancomycin use: a quasi-experimental study in a region of high MRSA prevalence. BMC Infect Dis 2018; 18:178. [PMID: 29661158 PMCID: PMC5902846 DOI: 10.1186/s12879-018-3081-1] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2017] [Accepted: 04/03/2018] [Indexed: 12/13/2022] Open
Abstract
Background Despite vancomycin use is a major risk factor for the emergence of vancomycin resistance, it is frequently inappropriately prescribed, especially as empirical treatment. We evaluated the effect of an antimicrobial stewardship intervention targeting for inappropriate continued empirical vancomycin use. Methods This was a quasi-experimental study comparing vancomycin use in a 6-month pre-intervention and 6-month intervention period. If empirical vancomycin was continued for more than 96 h without documentation of beta-lactam-resistant gram-positive microorganisms, it was considered inappropriate continued empirical vancomycin use. The intervention consisted of the monitoring of appropriateness by a pharmacist and direct discussion with the prescribing physicians by infectious disease specialists when empirical vancomycin was continued inappropriately. An interrupted time series analysis was used to compare vancomycin use before and during the intervention. Results Following implementation of the intervention, overall vancomycin consumption decreased by 14.6%, from 37.6 defined daily doses (DDDs)/1000 patient-days in the pre-intervention period to 32.1 DDDs/1000 patient-days in the intervention period (P < 0.001). The inappropriate consumption of vancomycin also declined from 8.0 DDDs/1000 patient-days to 5.8 DDDs/1000 patient-days (P = 0.009). Conclusion Interventions such as direct communication with prescribing physicians and infectious disease clinicians can help reduce the inappropriate continued use of vancomycin.
Collapse
Affiliation(s)
- Pyoeng Gyun Choe
- Department of Internal Medicine, Seoul National University College of Medicine, 103 Daehak-ro Jongno-gu, Seoul, 03080, Republic of Korea.,Infection Control Office, Seoul National University Hospital, Seoul, Republic of Korea
| | - Hei Lim Koo
- Infection Control Office, Seoul National University Hospital, Seoul, Republic of Korea
| | - Doran Yoon
- Department of Internal Medicine, Seoul National University College of Medicine, 103 Daehak-ro Jongno-gu, Seoul, 03080, Republic of Korea
| | - Ji Yun Bae
- Department of Internal Medicine, Seoul National University College of Medicine, 103 Daehak-ro Jongno-gu, Seoul, 03080, Republic of Korea
| | - Eunyoung Lee
- Department of Internal Medicine, Seoul National University College of Medicine, 103 Daehak-ro Jongno-gu, Seoul, 03080, Republic of Korea
| | - Joo-Hee Hwang
- Department of Internal Medicine, Seoul National University College of Medicine, 103 Daehak-ro Jongno-gu, Seoul, 03080, Republic of Korea.,Present address: Department of Internal Medicine, Chonbuk National University Medical School, Jeonju, Republic of Korea
| | - Kyoung-Ho Song
- Department of Internal Medicine, Seoul National University College of Medicine, 103 Daehak-ro Jongno-gu, Seoul, 03080, Republic of Korea
| | - Wan Beom Park
- Department of Internal Medicine, Seoul National University College of Medicine, 103 Daehak-ro Jongno-gu, Seoul, 03080, Republic of Korea.,Infection Control Office, Seoul National University Hospital, Seoul, Republic of Korea
| | - Ji Hwan Bang
- Department of Internal Medicine, Seoul National University College of Medicine, 103 Daehak-ro Jongno-gu, Seoul, 03080, Republic of Korea
| | - Eu Suk Kim
- Department of Internal Medicine, Seoul National University College of Medicine, 103 Daehak-ro Jongno-gu, Seoul, 03080, Republic of Korea
| | - Hong Bin Kim
- Department of Internal Medicine, Seoul National University College of Medicine, 103 Daehak-ro Jongno-gu, Seoul, 03080, Republic of Korea
| | - Sang Won Park
- Department of Internal Medicine, Seoul National University College of Medicine, 103 Daehak-ro Jongno-gu, Seoul, 03080, Republic of Korea
| | - Myoung-Don Oh
- Department of Internal Medicine, Seoul National University College of Medicine, 103 Daehak-ro Jongno-gu, Seoul, 03080, Republic of Korea.,Infection Control Office, Seoul National University Hospital, Seoul, Republic of Korea
| | - Nam Joong Kim
- Department of Internal Medicine, Seoul National University College of Medicine, 103 Daehak-ro Jongno-gu, Seoul, 03080, Republic of Korea. .,Infection Control Office, Seoul National University Hospital, Seoul, Republic of Korea.
| |
Collapse
|
28
|
Genome-Based Analysis of Enterococcus faecium Bacteremia Associated with Recurrent and Mixed-Strain Infection. J Clin Microbiol 2018; 56:JCM.01520-17. [PMID: 29263205 PMCID: PMC5824064 DOI: 10.1128/jcm.01520-17] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2017] [Accepted: 12/12/2017] [Indexed: 11/20/2022] Open
Abstract
Vancomycin-resistant Enterococcus faecium (VREfm) bloodstream infections are associated with high recurrence rates. This study used genome sequencing to accurately distinguish the frequency of relapse and reinfection in patients with recurrent E. faecium bacteremia and to investigate strain relatedness in patients with apparent VREfm and vancomycin-susceptible E. faecium (VSEfm) mixed infection. A retrospective study was performed at the Cambridge University Hospitals NHS Foundation Trust (CUH) between November 2006 and December 2012. We analyzed the genomes of 44 E. faecium isolates from 21 patients (26 VREfm isolates from 12 patients with recurrent bacteremia and 18 isolates from 9 patients with putative VREfm/VSEfm mixed infection). Phenotypic antibiotic susceptibility was determined using a Vitek2 instrument. Genomes were compared with those of a further 263 E. faecium isolates associated with bacteremia in patients at CUH over the same time period. Pairwise comparison of core genomes indicated that 10 (71%) episodes of recurrent VREfm bacteremia were due to reinfection with a new strain, with reinfection being more likely with increasing time between the two positive cultures. The majority (78%) of patients with a mixed VREfm and VSEfm infection had unrelated strains. More than half (59%) of study isolates were closely related to another isolate associated with bacteremia from CUH. This included 60% of isolates associated with reinfection, indicating acquisition in the hospital. This study provides the first high-resolution insights into recurrence and mixed infection by E. faecium and demonstrates that reinfection with a new strain, often acquired from the hospital, is a driver of recurrence.
Collapse
|
29
|
Puchter L, Chaberny IF, Schwab F, Vonberg RP, Bange FC, Ebadi E. Economic burden of nosocomial infections caused by vancomycin-resistant enterococci. Antimicrob Resist Infect Control 2018; 7:1. [PMID: 29312658 PMCID: PMC5755438 DOI: 10.1186/s13756-017-0291-z] [Citation(s) in RCA: 88] [Impact Index Per Article: 14.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2017] [Accepted: 12/18/2017] [Indexed: 11/29/2022] Open
Abstract
Background Nosocomial infections due to vancomycin-resistant enterococci (VRE) have become a major problem during the last years. The purpose of this study was to investigate the economic burden of nosocomial VRE infections in a European university hospital. Methods A retrospective matched case-control study was performed including patients who acquired nosocomial infection with either VRE or vancomycin-susceptible enterococci (VSE) within a time period of 3 years. 42 cases with VRE infections and 42 controls with VSE infections were matched for age, gender, admission and discharge within the same year, time at risk for infection, Charlson comorbidity index (±1), stay on intensive care units and non-intensive care units as well as for the type of infection, using criteria of the Centers for Disease Control and Prevention. Results The median overall costs per case were significantly higher than for controls (EUR 57,675 vs. EUR 38,344; p = 0.030). Costs were similar between cases and controls before onset of infection (EUR 17,893 vs. EUR 16,600; p = 0.386), but higher after onset of infection (EUR 37,971 vs. EUR 23,025; p = 0.049). The median attributable costs per case for vancomycin-resistance were EUR 13,157 (p = 0.036). The most significant differences in costs between cases and controls turned out to be for pharmaceuticals (EUR 6030 vs. EUR 2801; p = 0.008) followed by nursing staff (EUR 8956 vs. EUR 4621; p = 0.032), medical products (EUR 3312 vs. EUR 1838; p = 0.020), and for assistant medical technicians (EUR 3766 vs. EUR 2474; p = 0.023). Furthermore, multivariate analysis revealed that costs were driven independently by vancomycin-resistance (1.4 fold; p = 0.034). Conclusions This analysis suggested that nosocomial VRE infections significantly increases hospital costs compared with VSE infections. Therefore, hospital personal should implement control measures to prevent VRE transmission.
Collapse
Affiliation(s)
- Laura Puchter
- Department of Anesthesiology and Intensive Care Medicine, KRH Klinikum Hannover, Hannover, Germany
| | - Iris Freya Chaberny
- Institute of Infection Control and Hospital Epidemiology, Leipzig University Hospital, Leipzig, Germany
| | - Frank Schwab
- Institute of Hygiene and Environmental Medicine, Charité - University Medicine, Berlin, Germany
| | - Ralf-Peter Vonberg
- Institute for Medical Microbiology and Hospital Epidemiology, Hannover Medical School, Carl-Neuberg-Straße 1, 30625 Hannover, Germany
| | - Franz-Christoph Bange
- Institute for Medical Microbiology and Hospital Epidemiology, Hannover Medical School, Carl-Neuberg-Straße 1, 30625 Hannover, Germany
| | - Ella Ebadi
- Institute for Medical Microbiology and Hospital Epidemiology, Hannover Medical School, Carl-Neuberg-Straße 1, 30625 Hannover, Germany
| |
Collapse
|
30
|
Amberpet R, Sistla S, Parija SC, Rameshkumar R. Risk factors for intestinal colonization with vancomycin resistant enterococci' A prospective study in a level III pediatric intensive care unit. J Lab Physicians 2018; 10:89-94. [PMID: 29403213 PMCID: PMC5784302 DOI: 10.4103/jlp.jlp_32_17] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2017] [Accepted: 06/07/2017] [Indexed: 12/12/2022] Open
Abstract
PURPOSE Vancomycin-resistant enterococci (VRE) emerged as one of the major nosocomial pathogens across the globe. Gut colonization rate with VRE is higher in patients admitted to intensive care units (ICUs) due to the higher antibiotic pressure. VRE colonization increases the risk of developing infection up to 5-10 folds. The aim of this study was to determine the rates of VRE colonization among the patients admitted to pediatric ICU (PICU) and risk factors associated with it. MATERIALS AND METHODS Rectal swabs were collected after 48 h of admission to PICU from 198 patients. The samples were inoculated onto bile esculin sodium azide agar with 6 mg/ml of vancomycin. Growth on this medium was identified by the standard biochemical test, and minimum inhibitory concentration of vancomycin and teicoplanin was detected by agar dilution method. Resistance genes for vancomycin were detected by polymerase chain reaction. Risk factors were assessed by logistic regression analysis. RESULTS The rates of VRE colonization in patients admitted to PICU was 18.6%. The majority of the isolates were Enterococcus faecium (75.6%) followed by Enterococcus faecalis (24.4%). One patient acquired a VRE bloodstream infection (2.6%) among colonized patients, and none of the noncolonized patients acquired the infection. Consumption of vancomycin was found to be the only risk factor significantly associated with VRE colonization. CONCLUSION Routine surveillance and isolation of patients found to be VRE colonized may not be possible in tertiary care hospitals; however, educating health-care workers, promoting handwashing with antiseptic soaps or solutions, and antibiotic Stewardship policy may help in the reduction of vancomycin resistance and VRE colonization.
Collapse
Affiliation(s)
- Rajesh Amberpet
- Department of Microbiology, Division of Pediatric Critical Care, Jawaharlal Institute of Postgraduate Medical Education and Research, Puducherry, India
| | - Sujatha Sistla
- Department of Microbiology, Division of Pediatric Critical Care, Jawaharlal Institute of Postgraduate Medical Education and Research, Puducherry, India
| | - Subhash Chandra Parija
- Department of Microbiology, Division of Pediatric Critical Care, Jawaharlal Institute of Postgraduate Medical Education and Research, Puducherry, India
| | - Ramachandran Rameshkumar
- Department of Pediatrics, Division of Pediatric Critical Care, Jawaharlal Institute of Postgraduate Medical Education and Research, Puducherry, India
| |
Collapse
|
31
|
Barrasa-Villar JI, Aibar-Remón C, Prieto-Andrés P, Mareca-Doñate R, Moliner-Lahoz J. Impact on Morbidity, Mortality, and Length of Stay of Hospital-Acquired Infections by Resistant Microorganisms. Clin Infect Dis 2017; 65:644-652. [DOI: 10.1093/cid/cix411] [Citation(s) in RCA: 107] [Impact Index Per Article: 15.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2016] [Accepted: 04/27/2017] [Indexed: 02/07/2023] Open
|
32
|
Heisel RW, Sutton RR, Mascara GP, Winger DG, Weber DR, Lim SH, Oleksiuk LM. Vancomycin-resistant enterococci in acute myeloid leukemia and myelodysplastic syndrome patients undergoing induction chemotherapy with idarubicin and cytarabine. Leuk Lymphoma 2017; 58:2565-2572. [PMID: 28351179 DOI: 10.1080/10428194.2017.1306645] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
We conducted a retrospective study to determine the risk factors associated with vancomycin-resistant enterococci (VRE) acquisition/infection in newly diagnosed acute myeloid leukemia and myelodysplastic syndrome patients undergoing chemotherapy with the 7 + 3 regimen of cytarabine and idarubicin. Although only 2.5% (6/235) patients were colonized with VRE on admission, 59% (134/229) of patients acquired VRE during their hospitalization. Multivariable analysis identified the use of intravenous vancomycin (p = .024; HR: 1.548) and cephalosporin (p = .009; HR: 1.596) as the risk factors for VRE acquisition. VRE infection developed in 14% (33/229) of patients, with bloodstream infections accounting for 82% (27/33) of cases. VRE infection occurred in 25/126 (20%) of the VRE-colonized patients, but only 8/103 (8%) of those who were not (p = .01). Our study provides the evidence for the role of intravenous cephalosporin and vancomycin in VRE acquisition and highlights the clinical significance of VRE colonization in these patients.
Collapse
Affiliation(s)
- Ronald W Heisel
- a Department of Pharmacy , University of Pittsburgh Medical Center , Pittsburgh , PA , USA
| | - Robert R Sutton
- b University of Pittsburgh School of Pharmacy , Pittsburgh , PA , USA
| | - Gerard P Mascara
- a Department of Pharmacy , University of Pittsburgh Medical Center , Pittsburgh , PA , USA
| | - Daniel G Winger
- c Clinical and Translational Science Institute, University of Pittsburgh , Pittsburgh , PA , USA
| | - David R Weber
- d Division of Infectious Diseases , University of Pittsburgh Medical Center , Pittsburgh , PA , USA
| | - Seah H Lim
- e Division of Hematology/Oncology , University of Pittsburgh Medical Center , Pittsburgh , PA , USA
| | - Louise-Marie Oleksiuk
- a Department of Pharmacy , University of Pittsburgh Medical Center , Pittsburgh , PA , USA
| |
Collapse
|
33
|
Yeung CS, Cheung CY, Chan YH, Chak WL. Risk Factors and Outcomes of Vancomycin-Resistant Enterococcus Colonization in Patients on Peritoneal Dialysis: A Single-Center Study in Hong Kong. Perit Dial Int 2017; 37:556-561. [PMID: 28348103 DOI: 10.3747/pdi.2016.00278] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2016] [Accepted: 01/16/2017] [Indexed: 12/26/2022] Open
Abstract
BACKGROUND Vancomycin-resistant Enterococcus (VRE) colonization is common among patients with chronic kidney disease. However, data concerning VRE colonization among patients receiving peritoneal dialysis (PD) is lacking. The aim of this study is to evaluate the risk factors and various clinical outcomes for VRE colonization among PD patients. METHODS This is a retrospective cohort study of 166 PD patients who were hospitalized between 1 August 2013 and 31 July 2014. They were screened for VRE colonization status during a major VRE outbreak in Hong Kong in 2013 and were then categorized into 2 groups: VRE-positive and VRE-negative. The primary outcome was all-cause mortality while the secondary outcomes included VRE infection, PD-related peritonitis, and length of hospitalization. RESULTS Twenty-eight patients (16.9%) belonged to the VRE-positive group. Multivariate analysis showed that previous contact with VRE-positive patients (odds ratio [OR]: 417.86; 95% confidence interval [CI]: 17.21 - 10,147.26, p < 0.01), vancomycin use in previous 3 months (OR: 130.32; 95% CI: 5.35 - 3,176.30, p < 0.01), and old age (OR: 1.13; 95% CI: 1.02 - 1.24, p = 0.02) were the independent risk factors for VRE colonization. Patients in the VRE-positive group had significantly longer length of hospitalization, but there was no significant difference in all-cause mortality and peritonitis-free survival. CONCLUSION Vancomycin-resistant Enterococcus colonization is important among hospitalized PD patients. Cautious use of antibiotics and infection control measures are necessary to prevent VRE spreading, especially in high-risk patients.
Collapse
Affiliation(s)
- Ching-Shan Yeung
- Renal Unit, Department of Medicine, Queen Elizabeth Hospital, Hong Kong SAR
| | - Chi-Yuen Cheung
- Renal Unit, Department of Medicine, Queen Elizabeth Hospital, Hong Kong SAR
| | - Yiu-Han Chan
- Renal Unit, Department of Medicine, Queen Elizabeth Hospital, Hong Kong SAR
| | - Wai-Leung Chak
- Renal Unit, Department of Medicine, Queen Elizabeth Hospital, Hong Kong SAR
| |
Collapse
|
34
|
Incidence and Outcomes Associated With Infections Caused by Vancomycin-Resistant Enterococci in the United States: Systematic Literature Review and Meta-Analysis. Infect Control Hosp Epidemiol 2016; 38:203-215. [DOI: 10.1017/ice.2016.254] [Citation(s) in RCA: 71] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
BACKGROUNDInformation about the health and economic impact of infections caused by vancomycin-resistant enterococci (VRE) can inform investments in infection prevention and development of novel therapeutics.OBJECTIVETo systematically review the incidence of VRE infection in the United States and the clinical and economic outcomes.METHODSWe searched various databases for US studies published from January 1, 2000, through June 8, 2015, that evaluated incidence, mortality, length of stay, discharge to a long-term care facility, readmission, recurrence, or costs attributable to VRE infections. We included multicenter studies that evaluated incidence and single-center and multicenter studies that evaluated outcomes. We kept studies that did not have a denominator or uninfected controls only if they assessed postinfection length of stay, costs, or recurrence. We performed meta-analysis to pool the mortality data.RESULTSFive studies provided incidence data and 13 studies evaluated outcomes or costs. The incidence of VRE infections increased in Atlanta and Detroit but did not increase in national samples. Compared with uninfected controls, VRE infection was associated with increased mortality (pooled odds ratio, 2.55), longer length of stay (3-4.6 days longer or 1.4 times longer), increased risk of discharge to a long-term care facility (2.8- to 6.5-fold) or readmission (2.9-fold), and higher costs ($9,949 higher or 1.6-fold more).CONCLUSIONSVRE infection is associated with large attributable burdens, including excess mortality, prolonged in-hospital stay, and increased treatment costs. Multicenter studies that use suitable controls and adjust for time at risk or confounders are needed to estimate the burden of VRE infections.Infect Control Hosp Epidemiol. 2017;38:203–215
Collapse
|
35
|
Longitudinal Multicenter Analysis of Outcomes After Cessation of Control Measures for Vancomycin-Resistant Enterococci. Infect Control Hosp Epidemiol 2016; 38:24-30. [DOI: 10.1017/ice.2016.235] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
OBJECTIVETo assess clinically relevant outcomes after complete cessation of control measures for vancomycin-resistant enterococci (VRE).DESIGNQuasi-experimental ecological study over 3.5 years.METHODSAll VRE screening and isolation practices at 4 large academic hospitals in Ontario, Canada, were stopped on July 1, 2012. In total, 618 anonymized abstracted charts of patients with VRE-positive clinical isolates identified between July 1, 2010, and December 31, 2013, were reviewed to determine whether the case was a true VRE infection, a VRE colonization or contaminant, or a true VRE bacteremia. All deaths within 30 days of the last VRE infection were also reviewed to determine whether the death was fully or partially attributable to VRE. All-cause mortality was evaluated over the study period. Generalized estimating equation methods were used to cluster outcome rates within hospitals, and negative binomial models were created for each outcome.RESULTSThe incidence rate ratio (IRR) for VRE infections was 0.59 and the associatedPvalue was .34. For VRE bacteremias, the IRR was 0.54 andP=.38; for all-cause mortality the IRR was 0.70 andP=.66; and for VRE attributable death, the IRR was 0.35 andP=.49. VRE control measures were not significantly associated with any of the outcomes. Rates of all outcomes appeared to increase during the 18-month period after cessation of VRE control measures, but none reached statistical significance.CONCLUSIONClinically significant VRE outcomes remain rare. Cessation of all control measures for VRE had no significant attributable adverse clinical impact.Infect Control Hosp Epidemiol2016;1–7
Collapse
|
36
|
A Clinician’s Guide to the Treatment of Vancomycin Resistant Enterococci Bacteremia and Endocarditis. CURRENT TREATMENT OPTIONS IN INFECTIOUS DISEASES 2016. [DOI: 10.1007/s40506-016-0082-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
|
37
|
Muto CA. Why Are Antibiotic-Resistant Nosocomial Infections Spiraling Out of Control? Infect Control Hosp Epidemiol 2016; 26:10-2. [PMID: 15693403 DOI: 10.1086/502481] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
|
38
|
Askarian M, Shiraly R, Aramesh K, McLaws ML. Knowledge, Attitude, and Practices Regarding Contact Precautions Among Iranian Physicians. Infect Control Hosp Epidemiol 2016; 27:868-72. [PMID: 16874649 DOI: 10.1086/506411] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2005] [Accepted: 03/21/2005] [Indexed: 11/03/2022]
Abstract
Objective.To assess the knowledge, attitudes, and practices of Iranian physicians regarding contact isolation precautions.Design.Data were collected between May and November 2002 using a cross-sectional survey design.Setting.Teaching hospitals in Shiraz, Iran.Participants.A total of 155 physicians: 78 attending clinicians and 77 resident physician surgeons or internists.Results.The mean scores for knowledge and attitude were acceptable, with 71% of physicians scoring the maximum for knowledge and 65% achieving the maximum scores for attitude, whereas the mean score for practice was low, with only 26% achieving the maximum score. A good level of knowledge be associated with a good attitude (odds ratio [OR], 68.4 [95% confidence interval {CI}, 20.0-285.6]; P< .001), good practices were associated with good knowledge (OR, 22.5 [95% CI, 7.1-91.3]; P< .001), and a good attitude was associated with good practice (OR, 20.0 [95% CI, 5.7-105.2]; P<.001).Conclusion.Although strong associations were found among knowledge, attitude, and practice, the level of compliance with precautions was not nearly as high as it should be.
Collapse
Affiliation(s)
- Mehrdad Askarian
- Department of Community Medicine, Shiraz University of Medical Sciences, Shiraz, Iran.
| | | | | | | |
Collapse
|
39
|
Farr BM. What To Think If the Results of the National Institutes of Health Randomized Trial of Methicillin-ResistantStaphylococcus aureusand Vancomycin-ResistantEnterococcusControl Measures Are Negative (and Other Advice to Young Epidemiologists): A Review and an Au Revoir. Infect Control Hosp Epidemiol 2016; 27:1096-106. [PMID: 17006818 DOI: 10.1086/508759] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2006] [Accepted: 08/31/2006] [Indexed: 12/27/2022]
Abstract
The incidence of methicillin-resistantStaphylococcus aureus(MRSA) and vancomycin-resistantEnterococcus(VRE) infections continues to rise in National Nosocomial Infections Surveillance system hospitals, and these pathogens are reportedly causing more than 100,000 infections and many deaths each year in US healthcare facilities. This has led some to insist that control measures are now urgently needed, but several recent articles have suggested that isolation of patients does not work, is not needed, or is unsafe, or that a single cluster-randomized trial could be used to decide such matters. At least 101 studies have reported controlling MRSA infection and 38 have reported controlling VRE infection by means of active detection by surveillance culture and use of isolation for all colonized patients in healthcare settings where the pathogens are epidemic or endemic, in academic and nonacademic hospitals, and in acute care, intensive care, and long-term care settings. MRSA colonization and infection have been controlled to exceedingly low levels in multiple nations and in the state of Western Australia for decades by use of active detection and isolation. Studies suggesting problems with using such data to control MRSA colonization and infection have their own problems, which are discussed. Randomized trials are epidemiologic tools that can sometimes provide erroneous results, and they have not been considered necessary for studying isolation before it is used to control other important infections, such as tuberculosis, smallpox, and severe acute respiratory syndrome. No single epidemiologic study should be considered definitive. One should always weigh all available evidence. Infection with antibiotic-resistant pathogens such as MRSA and VRE is controllable to a low level by active detection and isolation of colonized and infected patients. Effective measures should be used to minimize the morbidity and mortality attributable to these largely preventable infections.
Collapse
Affiliation(s)
- Barry M Farr
- Department of Medicine, University of Virginia Health System, Charlottesville, VA 22908, USA.
| |
Collapse
|
40
|
Farr BM. Doing The Right Thing (and Figuring Out What That Is). Infect Control Hosp Epidemiol 2016; 27:999-1003. [PMID: 17006804 DOI: 10.1086/508672] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2006] [Accepted: 08/28/2006] [Indexed: 11/03/2022]
|
41
|
O'Connor C, Casserly LF, Qazi J, Power L, Finnegan C, O'Connell NH, Dunne CP. A case of fatal daptomycin-resistant, vancomycin-resistant enterococcal infective endocarditis in end-stage kidney disease. JMM Case Rep 2015. [DOI: 10.1099/jmmcr.0.000089] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Affiliation(s)
- Ciara O'Connor
- Department of Clinical Microbiology, University Hospital Limerick, Limerick, Ireland
- Centre for Interventions in Infection, Inflammation & Immunity (4i), Graduate Entry Medical School, University of Limerick, Limerick, Ireland
| | - Liam F. Casserly
- Department of Renal Medicine, University Hospital Limerick, Limerick, Ireland
| | - Junaid Qazi
- Department of Renal Medicine, University Hospital Limerick, Limerick, Ireland
| | - Lorraine Power
- Department of Clinical Microbiology, University Hospital Limerick, Limerick, Ireland
| | - Cathriona Finnegan
- Department of Clinical Microbiology, University Hospital Limerick, Limerick, Ireland
| | - Nuala H. O'Connell
- Department of Clinical Microbiology, University Hospital Limerick, Limerick, Ireland
- Centre for Interventions in Infection, Inflammation & Immunity (4i), Graduate Entry Medical School, University of Limerick, Limerick, Ireland
| | - Colum P. Dunne
- Centre for Interventions in Infection, Inflammation & Immunity (4i), Graduate Entry Medical School, University of Limerick, Limerick, Ireland
| |
Collapse
|
42
|
VRE and VSE Bacteremia Outcomes in the Era of Effective VRE Therapy: A Systematic Review and Meta-analysis. Infect Control Hosp Epidemiol 2015; 37:26-35. [PMID: 26434609 PMCID: PMC4707508 DOI: 10.1017/ice.2015.228] [Citation(s) in RCA: 138] [Impact Index Per Article: 15.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
BACKGROUND Prior data suggest that vancomycin-resistant Enterococcus (VRE)
bacteremia is associated with worse outcomes than vancomycin-sensitive
Enterococcus (VSE) bacteremia. However, many studies evaluating such
outcomes were conducted prior to the availability of effective VRE therapies. OBJECTIVE To systematically review VRE and VSE bacteremia outcomes among hospital patients in the
era of effective VRE therapy. METHODS Electronic databases and grey literature published between January 1997 and December
2014 were searched to identify all primary research studies comparing outcomes of VRE
and VSE bacteremias among hospital patients, following the availability of effective VRE
therapies. The primary outcome was all-cause, in-hospital mortality, while total
hospital length of stay (LOS) was a secondary outcome. All meta-analyses were conducted
in Review Manager 5.3 using random-effects, inverse variance modeling. RESULTS Among all the studies reviewed, 12 cohort studies and 1 case control study met
inclusion criteria. Similar study designs were combined in meta-analyses for mortality
and LOS. VRE bacteremia was associated with increased mortality compared with VSE
bacteremia among cohort studies (odds ratio [OR], 1.80; 95% confidence interval [CI],
1.38–2.35; I2=0%; n=11); the case-control study estimate was similar, but not
significant (OR, 1.93; 95% CI, 0.97–3.82). LOS was greater for VRE bacteremia patients
than for VSE bacteremia patients (mean difference, 5.01 days; 95% CI, 0.58–9.44];
I2=0%; n=5). CONCLUSIONS Despite the availability of effective VRE therapy, VRE bacteremia remains associated
with an increased risk of in-hospital mortality and LOS when compared to VSE bacteremia. Infect. Control Hosp. Epidemiol. 2015;37(1):26–35
Collapse
|
43
|
Picot-Guéraud R, Batailler P, Caspar Y, Hennebique A, Mallaret MR. Bacteremia caused by multidrug-resistant bacteria in a French university hospital center: 3 years of collection. Am J Infect Control 2015; 43:960-4. [PMID: 26082260 DOI: 10.1016/j.ajic.2015.05.004] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2015] [Revised: 04/30/2015] [Accepted: 05/01/2015] [Indexed: 02/06/2023]
Abstract
BACKGROUND The aim of the study was to describe the profile of patients and the characteristics of all bacteremias caused by multidrug-resistant (MDR) bacterial strains in a teaching hospital and to assess the mortality related to these events. METHODS A monocentric retrospective observational cohort study was conducted. All patients with bacteremia caused by MDR bacteria between 2011 and 2013 were included. The characteristics of patients and bacteremias, antibiotic therapy within the first day, and 30-day mortality were collected from the electronic medical records database. RESULTS A total of 228 patients were included with bacteremias caused by Enterobacteriaceae-producing extended-spectrum β-lactamase (n = 102), Enterobacteriaceae overproducing AmpC β-lactamase (n = 59), carbapenem-resistant Enterobacteriaceae (n = 3), ceftazidime- or carbapenem-resistant Acinetobacter baumannii (n = 2), ceftazidime- or carbapenem-resistant Pseudomonas aeruginosa (n = 23), methicillin-resistant Staphylococcus aureus (n = 40), and vancomycin-resistant Enterococcus (n = 2). The median Charlson comorbidity score was 6. Inappropriate antibiotic therapy was prescribed in 41.7% of bacteremias, and 30-day mortality was 23%. For 20.9% of the patients who had had a positive bacteriologic sample in the preceding 2 months, the initial antibiotic therapy was inappropriate. CONCLUSION In this cohort of bacteremia patients, a high rate of mortality and numerous patient comorbidities were observed. Taking greater account of antecedents of MDR bacterial infections could improve the rate of appropriate initial antibiotic therapy.
Collapse
|
44
|
Britt NS, Potter EM, Patel N, Steed ME. Comparison of the Effectiveness and Safety of Linezolid and Daptomycin in Vancomycin-Resistant Enterococcal Bloodstream Infection: A National Cohort Study of Veterans Affairs Patients. Clin Infect Dis 2015; 61:871-8. [PMID: 26063715 DOI: 10.1093/cid/civ444] [Citation(s) in RCA: 89] [Impact Index Per Article: 9.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2014] [Accepted: 04/29/2015] [Indexed: 12/15/2022] Open
Abstract
BACKGROUND Vancomycin-resistant Enterococcus bloodstream infections (VRE-BSIs) are becoming increasingly common. Linezolid and daptomycin are the primary treatment options for VRE-BSI, but optimal treatment is unclear. METHODS This was a national retrospective cohort study comparing linezolid and daptomycin for the treatment of VRE-BSI among Veterans Affairs Medical Center patients admitted during 2004-2013. The primary outcome was treatment failure, defined as a composite of (1) 30-day all-cause mortality; (2) microbiologic failure; and (3) 60-day VRE-BSI recurrence. Poisson regression was conducted to determine if antimicrobial treatment was independently associated with clinical outcomes. RESULTS A total of 644 patients were included (linezolid, n = 319; daptomycin, n = 325). Overall, treatment failure was 60.9% (n = 392/644), and 30-day all-cause mortality was 38.2% (n = 246/644). Linezolid was associated with a significantly higher risk of treatment failure compared with daptomycin (risk ratio [RR], 1.37; 95% confidence interval [CI], 1.13-1.67; P = .001). After adjusting for confounding factors in Poisson regression, the relationship between linezolid use and treatment failure persisted (adjusted RR, 1.15; 95% CI, 1.02-1.30; P = .026). Linezolid was also associated with higher 30-day mortality (42.9% vs 33.5%; RR, 1.17; 95% CI, 1.04-1.32; P = .014) and microbiologic failure rates (RR, 1.10; 95% CI, 1.02-1.18; P = .011). No difference in 60-day VRE-BSI recurrence was observed between treatment groups. CONCLUSIONS Treatment with linezolid for VRE-BSI resulted in significantly higher treatment failure in comparison to daptomycin. Linezolid treatment was also associated with greater 30-day all-cause mortality and microbiologic failure in this cohort.
Collapse
Affiliation(s)
- Nicholas S Britt
- Department of Pharmacy Practice, University of Kansas School of Pharmacy, Lawrence Department of Preventive Medicine and Public Health, University of Kansas School of Medicine, Kansas City Pharmacy Service, Dwight D. Eisenhower Veterans Affairs Medical Center, Leavenworth, Kansas
| | - Emily M Potter
- Pharmacy Service, Dwight D. Eisenhower Veterans Affairs Medical Center, Leavenworth, Kansas
| | - Nimish Patel
- Albany College of Pharmacy and Health Sciences, New York
| | - Molly E Steed
- Department of Pharmacy Practice, University of Kansas School of Pharmacy, Lawrence
| |
Collapse
|
45
|
Min L, Galecki A, Mody L. Functional disability and nursing resource use are predictive of antimicrobial resistance in nursing homes. J Am Geriatr Soc 2015; 63:659-66. [PMID: 25857440 DOI: 10.1111/jgs.13353] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
OBJECTIVES To use a simple measure of activities of daily living, wounds, and indwelling devices (urinary catheter, feeding tube) to predict prevalent, new, and intermittent multidrug-resistant organism (MDRO) acquisition in nursing home (NH) residents. DESIGN Secondary analysis, prospective cohort study. SETTING Southeast Michigan NHs (n = 15). PARTICIPANTS NH residents (N = 111, mean age 81) with two or more monthly visits (729 total). MEASUREMENTS Monthly microbiological surveillance for MDROs from multiple anatomic sites from enrollment until discharge or 1 year. The Arling scale, previously developed as a measure of NH residents' need (time-intensity) for nursing resources, was used to predict prevalent and time to new or intermittent acquisition (months) of methicillin-resistant Staphylococcus aureus (MRSA), vancomycin-resistant enterococci (VRE), and antibiotic-resistant gram-negative bacteria (R-GNB) colonization using multiple-failure accelerated time-factor survival analysis, controlling for comorbidity, hospitalization, and antibiotic use in the prior month. RESULTS One-fifth of participants had a wound, and one-third had a device. There were 60 acquisitions of MRSA, 56 of R-GNB, and 15 of VRE. Expected time to acquisition was less than 1 year for MRSA (median 6.7 months) and R-GNB (median 4.5 months) and more than 1 year for VRE (median 40 months). Arling score was associated with earlier new MRSA and VRE acquisition. A resident with only mild functional impairment and no device or wound would be expected to acquire MRSA in 20 months, versus 5 months for someone needing the most-intense nursing contact. CONCLUSION MDRO acquisition is common in community NHs. Need for nursing care predicts new MDRO acquisition in NHs, suggesting potential mechanisms for MDRO acquisition and strategies for future interventions for high-risk individuals (e.g., enhanced barrier precautions).
Collapse
Affiliation(s)
- Lillian Min
- Division of Geriatric and Palliative Medicine, University of Michigan, Ann Arbor, Michigan; Geriatric Research, Education and Clinical Center, Veteran Affairs Ann Arbor Healthcare System, Ann Arbor, Michigan
| | | | | |
Collapse
|
46
|
Olivier CN, Blake RK, Steed LL, Salgado CD. Risk of Vancomycin-ResistantEnterococcus(VRE) Bloodstream Infection Among Patients Colonized With VRE. Infect Control Hosp Epidemiol 2015; 29:404-9. [DOI: 10.1086/587647] [Citation(s) in RCA: 90] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Background.Colonization with vancomycin-resistantEnterococcus(VRE) is a risk factor for subsequent VRE bloodstream infection (BSI); however, risk factors for BSI among colonized patients have not been adequately described. We sought to determine the proportion of VRE-colonized patients who subsequently develop VRE BSI and to identify risk factors for VRE BSI among these patients.Methods.Records of 768 patients colonized with VRE from January 2002 through June 2005 were reviewed. The proportion of patients who developed VRE BSI was calculated, and the characteristics of these patients were compared, in a 2 : 1 ratio, with those of patients who did not develop VRE BSI. To identify risk factors for VRE BSI and for death, we used univariate logistic regression analysis and then multivariate logistic regression analysis. Using pulsed-field gel electrophoresis (PFGE), we compared the isolate recovered when the patient was colonized and the isolate recovered when the patient developed VRE BSI.Results.Of the 768 patients colonized with VRE, 31 (4.0%) developed VRE BSI. Multivariate analysis identified the following idependent risk factors for developing VRE BSI: infection of an additional body site other than blood (adjusted odds ratio [aOR], 3.9;P= .04), admission to the hospital from a long-term care facility (aOR, 12.6;P= .04), and receipt of vancomycin (aOR, 10.6;P< .001). The independent risk factors for death among patients colonized with VRE were immunosuppression (aOR, 12.9;P= .001 ) and VRE BSI (aOR, 9.1;P= .002). Of the 31 patients who developed VRE BSI, 23 (74%) had a pair of isolates representing VRE colonization and VRE BSI. For 19 (83%) of these 23 patients, the isolate representing BSI was genetically related to the isolate representing VRE colonization: 12 pairs of isolates (52%) had identical banding patterns, 5 had closely related patterns, and 2 had possibly related patterns.Conclusion.Of the 768 patients colonized with VRE, 31 (4.0%) usually developed VRE BSI due to a related strain. Independent risk factors for BSI among colonized patients were admission from a long-term care facility, infection of an additional body site, and exposure to vancomycin. Independent risk factors for death were immunosuppression and VRE BSI.
Collapse
|
47
|
Affiliation(s)
- Younghee Jung
- Department of Internal Medicine, Seoul National University College of Medicine, Seoul, Korea
- Division of Infectious Diseases, Seoul National University Bundang Hospital, Seongnam, Korea
- Department of Internal Medicine, Konyang University Hospital, Konyang University College of Medicine, Daejeon, Korea
| | - Hong Bin Kim
- Department of Internal Medicine, Seoul National University College of Medicine, Seoul, Korea
- Division of Infectious Diseases, Seoul National University Bundang Hospital, Seongnam, Korea
| |
Collapse
|
48
|
Huh HJ, Jang MA, Seo JY, Kim JY, Ki CS, Kim JW, Lee NY. Evaluation of the iNtRON VRE vanA/vanB real-time PCR assay for detection of vancomycin-resistant enterococci. Ann Lab Med 2014; 35:76-81. [PMID: 25553284 PMCID: PMC4272969 DOI: 10.3343/alm.2015.35.1.76] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2014] [Revised: 06/28/2014] [Accepted: 10/13/2014] [Indexed: 11/19/2022] Open
Abstract
BACKGROUND Recently, the iNtRON VRE vanA/vanB real-time PCR (iNtRON; iNtRON Biotechnology, Korea) assay, a multiplex real-time PCR method, was introduced. In this prospective study, we compared the iNtRON assay with the Seeplex VRE ACE detection kit (Seeplex; Seegene, Korea), a conventional multiplex PCR assay. METHODS A chromogenic agar-based culture, in which pre-selected vancomycin-resistant enterococci (VRE) was grown and subsequently plated on blood agar with vancomycin disks, was regarded as the reference method. A total of 304 consecutive rectal swab specimens were tested for VRE by culture and by iNtRON and Seeplex PCR assays. For the PCR assays, specimens were enriched for 16-24 hr before PCR. RESULTS VRE were isolated from 44 (14.5%) specimens by chromogenic agar-based culture. The clinical sensitivity, specificity, positive predictive value (PPV), and negative predictive value (NPV) of the iNtRON assay were 100% (95% confidence interval: 89.8%-100%), 99.2% (96.9%-99.9%), 95.6% (83.6%-99.2%), and 100% (98.2%-100%), respectively, while those of the Seeplex assay were 97.7% (86.2%-99.9%), 99.6% (97.5%-99.9%), 97.7% (86.2%-99.9%), and 99.6% (97.5%-99.9%), respectively. The iNtRON assay had a detection limit of 3,159 copies/µL and 13,702 copies/µL for the vanA and vanB genes, respectively. No cross-reactivity was observed in 11 non-VRE bacterial culture isolates. CONCLUSIONS The overall performance of the iNtRON assay was comparable to that of a chromogenic agar-based culture method for prompt identification of VRE-colonized patients in hospitals. This assay could be an alternative or supportive method for the effective control of nosocomial VRE infection.
Collapse
Affiliation(s)
- Hee Jae Huh
- Department of Laboratory Medicine and Genetics, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Mi-Ae Jang
- Department of Laboratory Medicine and Genetics, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Ja Young Seo
- Department of Laboratory Medicine, Gachon University Gil Hospital, Incheon, Korea
| | - Ji-Youn Kim
- Center for Clinical Medicine, Samsung Biomedical Research Institute, Samsung Medical Center, Seoul, Korea
| | - Chang-Seok Ki
- Department of Laboratory Medicine and Genetics, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Jong-Won Kim
- Department of Laboratory Medicine and Genetics, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Nam Yong Lee
- Department of Laboratory Medicine and Genetics, Sungkyunkwan University School of Medicine, Seoul, Korea
| |
Collapse
|
49
|
Gedik H, Şimşek F, Kantürk A, Yıldırmak T, Arıca D, Aydın D, Yokuş O, Demirel N. Vancomycin-resistant enterococci colonization in patients with hematological malignancies: screening and its cost-effectiveness. Afr Health Sci 2014; 14:899-905. [PMID: 25834499 PMCID: PMC4370069 DOI: 10.4314/ahs.v14i4.18] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
BACKGROUND AND OBJECTIVE We evaluated the rates of vancomycin-resistant enterococci (VRE) colonization and VRE-related bacteremia in patients with hematological malignancies in terms of routine screening culture and its cost-effectiveness. MATERIALS AND METHODS All patients of the hematology department who were older than 14 years of age and who developed at least one febrile neutropenia episode during chemotherapy for hematological cancers between November 2010 and November 2012 were evaluated retrospectively. RESULTS We retrospectively analyzed 282 febrile episodes in 126 neutropenic patients during a two-year study period. The study included 65 cases in the first study-year and 78 cases in the second study-year. The numbers of colonization days and colonized patient were748 days of colonization in 29 patients (44%) in the first study-year and 547 colonization days in 21 patients (26%) in the second study-year, respectively. Routine screening culture for VRE cost $4516,4 (427 cultures) in the first study-year, $5082,7 (504 cultures) in the second study-year depending on the number of patients and their length of stay. CONCLUSION In line with our study results, routine screening of hematological patients for VRE colonization is not costeffective. Routine surveillance culture for VRE should be considered with respect to the conditions of health care setting.
Collapse
Affiliation(s)
- Habip Gedik
- Department of Infectious Diseases and Clinical Microbiology, Ministry of Health Okmeydanı Training and Research Hospital, Istanbul
| | - Funda Şimşek
- Department of Infectious Diseases and Clinical Microbiology, Ministry of Health Okmeydanı Training and Research Hospital, Istanbul
| | - Arzu Kantürk
- Department of Infectious Diseases and Clinical Microbiology, Ministry of Health Okmeydanı Training and Research Hospital, Istanbul
| | - Taner Yıldırmak
- Department of Infectious Diseases and Clinical Microbiology, Ministry of Health Okmeydanı Training and Research Hospital, Istanbul
| | - Deniz Arıca
- Department of Hematology, Ministry of Health Okmeydanı Training and Research Hospital, Istanbul
| | - Demet Aydın
- Department of Hematology, Ministry of Health Okmeydanı Training and Research Hospital, Istanbul
| | - Osman Yokuş
- Department of Hematology, Ministry of Health Okmeydanı Training and Research Hospital, Istanbul
| | - Naciye Demirel
- Department of Hematology, Ministry of Health Okmeydanı Training and Research Hospital, Istanbul
| |
Collapse
|
50
|
Barie PS, Wilson SE. Impact of evolving epidemiology on treatments for complicated skin and skin structure infections: the surgical perspective. J Am Coll Surg 2014; 220:105-116.e6. [PMID: 25459370 DOI: 10.1016/j.jamcollsurg.2014.02.039] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2013] [Revised: 02/24/2014] [Accepted: 02/24/2014] [Indexed: 01/08/2023]
Affiliation(s)
- Philip S Barie
- Department of Surgery and Department of Healthcare Policy and Research, Joan and Sanford I Weill Medical College of Cornell University, New York, NY.
| | - Samuel E Wilson
- Department of Surgery, University of California, Irvine School of Medicine, Orange, CA
| |
Collapse
|