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Eichel VM, Last K, Brühwasser C, von Baum H, Dettenkofer M, Götting T, Grundmann H, Güldenhöven H, Liese J, Martin M, Papan C, Sadaghiani C, Wendt C, Werner G, Mutters NT. Epidemiology and outcomes of vancomycin-resistant enterococcus infections: a systematic review and meta-analysis. J Hosp Infect 2023; 141:119-128. [PMID: 37734679 DOI: 10.1016/j.jhin.2023.09.008] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2023] [Revised: 09/02/2023] [Accepted: 09/06/2023] [Indexed: 09/23/2023]
Abstract
Vancomycin-resistant enterococci (VRE) cause many infections in the healthcare context. Knowledge regarding the epidemiology and burden of VRE infections, however, remains fragmented. We aimed to summarize recent studies on VRE epidemiology and outcomes in hospitals, long-term-care facilities (LTCFs) and nursing homes worldwide based on current epidemiological reports. We searched MEDLINE/PubMed, the Cochrane Library, and Web of Science for observational studies, which reported on VRE faecium and faecalis infections in in-patients published between January 2014 and December 2020. Outcomes were incidence, infection rate, mortality, length of stay (LOS), and healthcare costs. We conducted a meta-analysis on mortality (PROSPERO registration number: CRD42020146389). Of 681 identified publications, 57 studies were included in the analysis. Overall quality of evidence was moderate to low. VRE incidence was rarely and heterogeneously reported. VRE infection rate differed highly (1-55%). The meta-analysis showed a higher mortality for VRE faecium bloodstream infections (BSIs) compared with VSE faecium BSIs (risk ratio, RR 1.46; 95% confidence interval (CI) 1.17-1.82). No difference was observed when comparing VRE faecium vs VRE faecalis BSI (RR 1.00, 95% CI 0.52-1.93). LOS was higher in BSIs caused by E. faecium vs E. faecalis. Only three studies reported healthcare costs. In contrast to previous findings, our meta-analysis of included studies indicates that vancomycin resistance independent of VRE species may be associated with a higher mortality. We identified a lack of standardization in reporting outcomes, information regarding healthcare costs, and state-of-the-art microbiological species identification methodology, which may inform the set-up and reporting of future studies.
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Affiliation(s)
- V M Eichel
- Heidelberg University Hospital, Center for Infectious Diseases, Section of Hospital and Environmental Hygiene, Heidelberg, Germany
| | - K Last
- Institute for Hygiene and Public Health, University Hospital Bonn, Bonn, Germany.
| | - C Brühwasser
- Heidelberg University Hospital, Center for Infectious Diseases, Section of Hospital and Environmental Hygiene, Heidelberg, Germany; Infection Prevention and Hospital Hygiene, University Hospital Innsbruck, Innsbruck, Austria
| | - H von Baum
- Institute of Medical Microbiology and Hygiene, University Hospital of Ulm, Ulm, Germany
| | | | - T Götting
- Institute for Infection Prevention and Control, Medical Center - University of Freiburg, Freiburg, Germany
| | - H Grundmann
- Institute for Infection Prevention and Control, Medical Center - University of Freiburg, Freiburg, Germany
| | - H Güldenhöven
- Institute for Infection Prevention and Control, Medical Center - University of Freiburg, Freiburg, Germany
| | - J Liese
- Institute of Medical Microbiology and Hygiene, University Hospital Tübingen, Tübingen, Germany
| | - M Martin
- Institute for Infection Prevention and Hospital Hygiene, SLK-Kliniken Heilbronn GmbH, Germany
| | - C Papan
- Institute for Hygiene and Public Health, University Hospital Bonn, Bonn, Germany
| | - C Sadaghiani
- Institute for Infection Prevention and Control, Medical Center - University of Freiburg, Freiburg, Germany
| | - C Wendt
- MVZ Labor Dr. Limbach, Department of Hygiene, Heidelberg, Germany
| | - G Werner
- Division Nosocomial Pathogens and Antibiotic Resistances, Department of Infectious Diseases, National Reference Centre for Staphylococci and Enterococci (NRC), Robert Koch Institute, Wernigerode Branch, Wernigerode, Germany
| | - N T Mutters
- Institute for Hygiene and Public Health, University Hospital Bonn, Bonn, Germany
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Rashidi A, Gao F, Fredricks DN, Pergam SA, Mielcarek M, Milano F, Sandmaier BM, Lee SJ. Analysis of Antibiotic Exposure and Development of Acute Graft-vs-Host Disease Following Allogeneic Hematopoietic Cell Transplantation. JAMA Netw Open 2023; 6:e2317188. [PMID: 37285153 PMCID: PMC10248746 DOI: 10.1001/jamanetworkopen.2023.17188] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/24/2023] [Accepted: 04/07/2023] [Indexed: 06/08/2023] Open
Abstract
Importance Certain antibiotic exposures have been associated with increased rates of acute graft-vs-host disease (aGVHD) after allogeneic hematopoietic cell transplantation (allo-HCT). Since antibiotic exposure can both affect and be affected by infections, analyzing time-dependent exposure in the presence of multiple potential confounders, including prior antibiotic exposures, poses specific analytical challenges, necessitating both a large sample size and unique approaches. Objective To identify antibiotics and antibiotic exposure timeframes associated with subsequent aGVHD. Design, Setting, and Participants This cohort study assessed allo-HCT at a single center from 2010 to 2021. Participants included all patients aged at least 18 years who underwent their first T-replete allo-HCT, with at least 6 months of follow-up. Data were analyzed from August 1 to December 15, 2022. Exposures Antibiotics between 7 days before and 30 days after transplant. Main Outcomes and Measures The primary outcome was grade II to IV aGVHD. The secondary outcome was grade III to IV aGVHD. Data were analyzed using 3 orthogonal methods: conventional Cox proportional hazard regression, marginal structural models, and machine learning. Results A total of 2023 patients (median [range] age, 55 [18-78] years; 1153 [57%] male) were eligible. Weeks 1 and 2 after HCT were the highest-risk intervals, with multiple antibiotic exposures associated with higher rates of subsequent aGVHD. In particular, exposure to carbapenems during weeks 1 and 2 after allo-HCT was consistently associated with increased risk of aGVHD (minimum hazard ratio [HR] among models, 2.75; 95% CI, 1.77-4.28), as was week 1 after allo-HCT exposure to combinations of penicillins with a β-lactamase inhibitor (minimum HR among models, 6.55; 95% CI, 2.35-18.20). Conclusions and Relevance In this cohort study of allo-HCT recipients, antibiotic choices and schedules in the early course of transplantation were associated with aGVHD rates. These findings should be considered in antibiotic stewardship programs.
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Affiliation(s)
- Armin Rashidi
- Fred Hutchinson Cancer Center, Seattle, Washington
- Division of Medical Oncology, Department of Medicine, University of Washington
| | - Fei Gao
- Biostatistics, Bioinformatics and Epidemiology Program, Vaccine and Infectious Disease Division, Fred Hutchinson Cancer Center, Seattle, Washington
| | - David N. Fredricks
- Fred Hutchinson Cancer Center, Seattle, Washington
- Division of Allergy and Infectious Diseases, Department of Medicine, University of Washington, Seattle
| | - Steven A. Pergam
- Fred Hutchinson Cancer Center, Seattle, Washington
- Division of Allergy and Infectious Diseases, Department of Medicine, University of Washington, Seattle
| | - Marco Mielcarek
- Fred Hutchinson Cancer Center, Seattle, Washington
- Division of Medical Oncology, Department of Medicine, University of Washington
| | - Filippo Milano
- Fred Hutchinson Cancer Center, Seattle, Washington
- Division of Medical Oncology, Department of Medicine, University of Washington
| | - Brenda M. Sandmaier
- Fred Hutchinson Cancer Center, Seattle, Washington
- Division of Medical Oncology, Department of Medicine, University of Washington
| | - Stephanie J. Lee
- Fred Hutchinson Cancer Center, Seattle, Washington
- Division of Medical Oncology, Department of Medicine, University of Washington
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Willems RPJ, van Dijk K, Vehreschild MJGT, Biehl LM, Ket JCF, Remmelzwaal S, Vandenbroucke-Grauls CMJE. Incidence of infection with multidrug-resistant Gram-negative bacteria and vancomycin-resistant enterococci in carriers: a systematic review and meta-regression analysis. THE LANCET. INFECTIOUS DISEASES 2023; 23:719-731. [PMID: 36731484 DOI: 10.1016/s1473-3099(22)00811-8] [Citation(s) in RCA: 12] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/25/2022] [Revised: 11/17/2022] [Accepted: 11/29/2022] [Indexed: 02/01/2023]
Abstract
BACKGROUND Carriers of multidrug-resistant bacteria are at risk of infections with these bacteria; the precise size of this risk is unclear. We aimed to quantify the effect of gut colonisation on subsequent risk of infection with multidrug-resistant bacteria. METHODS We performed a systematic review and meta-regression analysis. We searched PubMed, Embase, Web of Science Core Collection, and Google Scholar for follow-up studies published from Jan 1, 1995, to March 17, 2022, that measured the incidence of infections with multidrug-resistant Gram-negative bacteria (MDR-GNB) and from Jan 1, 1995, to March 15, 2022, that measured the incidence of infections with vancomycin-resistant enterococci (VRE). We included original cohort studies and case-control studies that used incidence-density sampling, included 50 or more patients with enteric colonisation or positive urinary samples as a surrogate marker of colonisation, or both, and analysed infections clearly preceded by colonisation. We did not use any language restrictions. We excluded studies not reporting length of follow-up. Summary data were extracted and independently cross-verified by two authors. Carriage was defined as MDR-GNB or VRE, detected in faecal or urinary cultures. Our primary outcomes were cumulative incidence and incidence density of infection in patients colonised by multidrug-resistant bacteria. To estimate pooled incidences, general linearised mixed-effects meta-regressions were used, adjusting for varying follow-up durations. This study is registered with PROSPERO, CRD42020222415. FINDINGS Of the 301 studies identified, 44 studies (26 on MDR-GNB, 14 on VRE, and four on both MDR-GNB and VRE) from 14 countries were retained for qualitative synthesis, 40 of which were analysed with meta-regression, comprising data for 14 049 patients colonised with multidrug-resistant bacteria. The pooled cumulative incidence of infection was 14% (95% CI 10-18; p<0·0001) at a median follow-up time of 30 days for MDR-GNB (845 cases of infection in 9034 patients colonised) and 8% (5-13; p<0·0001) at 30 days for VRE (229 cases of infection in 4747 patients colonised). Infection incidence density (4·26 infections per 1000 patient-days; 95% CI 1·69-6·82) and cumulative incidence of infection (19%, 95% CI 15-25; p<0·0001; 602 cases of infection in 4547 patients colonised) were highest for carbapenem-resistant Gram-negative bacteria at 30 days. Risk of bias was rated low to moderate. INTERPRETATION The risk of infection was substantial, with the highest risk for patients colonised with carbapenem-resistant Gram-negative bacteria and the lowest in patients with VRE. These data might help to guide prophylactic and treatment decisions and form a valuable resource for planning clinical trials on targeted prevention. FUNDING The Netherlands Organization for Health Research and Development.
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Affiliation(s)
- Roel P J Willems
- Department of Medical Microbiology and Infection Control, Amsterdam University Medical Centers, location Academic Medical Center, Amsterdam Infection and Immunity Institute, Amsterdam, Netherlands.
| | - Karin van Dijk
- Department of Medical Microbiology and Infection Control, Amsterdam University Medical Centers, location Academic Medical Center, Amsterdam Infection and Immunity Institute, Amsterdam, Netherlands
| | - Maria J G T Vehreschild
- Department I of Internal Medicine, Faculty of Medicine and University Hospital of Cologne, University of Cologne, Cologne, Germany; German Centre of Infection Research (partner site Bonn-Cologne), Cologne, Germany; Department of Internal Medicine, Infectious Diseases, University Hospital Frankfurt, Goethe University Frankfurt, Frankfurt, Germany
| | - Lena M Biehl
- Department I of Internal Medicine, Faculty of Medicine and University Hospital of Cologne, University of Cologne, Cologne, Germany; German Centre of Infection Research (partner site Bonn-Cologne), Cologne, Germany
| | - Johannes C F Ket
- Medical Library, Vrije Universiteit Amsterdam, Amsterdam, Netherlands
| | - Sharon Remmelzwaal
- Department of Epidemiology and Data Science, Amsterdam University Medical Centers, Vrije Universiteit Amsterdam, Amsterdam Public Health Research Institute, Amsterdam, Netherlands
| | - Christina M J E Vandenbroucke-Grauls
- Department of Medical Microbiology and Infection Control, Amsterdam University Medical Centers, location Academic Medical Center, Amsterdam Infection and Immunity Institute, Amsterdam, Netherlands; Department of Clinical Medicine and Department of Clinical Epidemiology, Aarhus University, Aarhus, Denmark
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Contreras GA, Munita JM, Simar S, Luterbach C, Dinh AQ, Rydell K, Sahasrabhojane PV, Rios R, Diaz L, Reyes K, Zervos M, Misikir HM, Sanchez-Petitto G, Liu C, Doi Y, Abbo LM, Shimose L, Seifert H, Gudiol C, Barberis F, Pedroza C, Aitken SL, Shelburne SA, van Duin D, Tran TT, Hanson BM, Arias CA. Contemporary Clinical and Molecular Epidemiology of Vancomycin-Resistant Enterococcal Bacteremia: A Prospective Multicenter Cohort Study (VENOUS I). Open Forum Infect Dis 2021; 9:ofab616. [PMID: 35155713 PMCID: PMC8830530 DOI: 10.1093/ofid/ofab616] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2021] [Accepted: 12/06/2021] [Indexed: 11/25/2022] Open
Abstract
Background Vancomycin-resistant enterococci (VRE) are major therapeutic challenges. Prospective contemporary data characterizing the clinical and molecular epidemiology of VRE bloodstream infections (BSIs) are lacking. Methods The Vancomycin-Resistant Enterococcal BSI Outcomes Study (VENOUS I) is a prospective observational cohort of adult patients with enterococcal BSI in 11 US hospitals. We included patients with Enterococcus faecalis or Enterococcus faecium BSI with ≥1 follow-up blood culture(s) within 7 days and availability of isolate(s) for further characterization. The primary study outcome was in-hospital mortality. Secondary outcomes were mortality at days 4, 7, 10, 12, and 15 after index blood culture. A desirability of outcome ranking was constructed to assess the association of vancomycin resistance with outcomes. All index isolates were subjected to whole genome sequencing. Results Forty-two of 232 (18%) patients died in hospital and 39 (17%) exhibited microbiological failure (lack of clearance in the first 4 days). Neutropenia (hazard ratio [HR], 3.13), microbiological failure (HR, 2.4), VRE BSI (HR, 2.13), use of urinary catheter (HR, 1.85), and Pitt BSI score ≥2 (HR, 1.83) were significant predictors of in-hospital mortality. Microbiological failure was the strongest predictor of in-hospital mortality in patients with E faecium bacteremia (HR, 5.03). The impact of vancomycin resistance on mortality in our cohort changed throughout the course of hospitalization. Enterococcus faecalis sequence type 6 was a predominant multidrug-resistant lineage, whereas a heterogeneous genomic population of E faecium was identified. Conclusions Failure of early eradication of VRE from the bloodstream is a major factor associated with poor outcomes.
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Affiliation(s)
- German A Contreras
- Division of Infectious Diseases, Department of Internal Medicine, McGovern Medical School, University of Texas Health Science Center, Houston, Texas, USA
- Center for Antimicrobial Resistance and Microbial Genomics, McGovern Medical School, University of Texas Health Science Center, Houston, Texas, USA
- Molecular Genetics and Antimicrobial Resistance Unit, International Center for Microbial Genomics, Universidad El Bosque, Bogotá, Colombia
| | - Jose M Munita
- Center for Antimicrobial Resistance and Microbial Genomics, McGovern Medical School, University of Texas Health Science Center, Houston, Texas, USA
- Genomics and Resistant Microbes (GeRM) Group, Facultad de Medicina Clínica Alemana de Santiago, Universidad del Desarrollo, Santiago, Chile
- Millennium Initiative for Collaborative Research On Bacterial Resistance (MICROB-R), Santiago, Chile
| | - Shelby Simar
- Center for Antimicrobial Resistance and Microbial Genomics, McGovern Medical School, University of Texas Health Science Center, Houston, Texas, USA
- Center for Infectious Diseases, School of Public Health, University of Texas Health Science Center at Houston, Houston, Texas, USA
| | - Courtney Luterbach
- Division of Pharmacotherapy and Experimental Therapeutics, University of North Carolina, Chapel Hill, North Carolina, USA
| | - An Q Dinh
- Center for Infectious Diseases Research, Houston Methodist Research Institute, Houston, Texas, USA
| | - Kirsten Rydell
- Division of Infectious Diseases, Houston Methodist Hospital, Houston, Texas, USA
| | | | - Rafael Rios
- Molecular Genetics and Antimicrobial Resistance Unit, International Center for Microbial Genomics, Universidad El Bosque, Bogotá, Colombia
| | - Lorena Diaz
- Molecular Genetics and Antimicrobial Resistance Unit, International Center for Microbial Genomics, Universidad El Bosque, Bogotá, Colombia
| | - Katherine Reyes
- Department of Internal Medicine, Division of Infectious Diseases, Henry Ford Hospital, Detroit, MI, USA
| | - Marcus Zervos
- Department of Internal Medicine, Division of Infectious Diseases, Henry Ford Hospital, Detroit, MI, USA
| | - Helina M Misikir
- Department of Internal Medicine, Division of Infectious Diseases, Henry Ford Hospital, Detroit, MI, USA
| | - Gabriela Sanchez-Petitto
- Department of Medicine, Division of Hematology / Oncology, University of Maryland School of Medicine, Baltimore, MD, USA
| | - Catherine Liu
- Department of Medicine, Division of Allergy and Infectious Diseases, School of Medicine, University of Washington, Seattle, WA, USA
- Vaccine and Infectious Disease Division, Fred Hutchinson Cancer Research Center, Seattle, WA, USA
| | - Yohei Doi
- Division of Infectious Diseases, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA
| | - Lilian M Abbo
- Division of Infectious Disease, Department of Medicine, University of Miami Miller School of Medicine Miami, Miami, FL, USA
- Jackson Health System, Miami Transplant Institute, Miami, FL, USA
| | - Luis Shimose
- Division of Infectious Disease, Department of Medicine, University of Mississippi Medical Center, Jackson, MS, USA
| | - Harald Seifert
- University of Cologne, Institute for Medical Microbiology, Immunology and Hygiene, University Hospital of Cologne, Cologne, Germany
| | - Carlota Gudiol
- Department of Infectious Diseases, Bellvitge University Hospital, Bellvitge Biomedical Research Institute (IDIBELL), l’Hospitalet de Llobregat, Barcelona, Spain. Spanish Network for Research in Infectious Disease (REIPI), Instituto de Salud Carlos III, Madrid, Spain
| | - Fernanda Barberis
- Unidad de Infectología, Sanatorio Dr. Julio Méndez, CABA. Buenos Aires, Argentina
| | - Claudia Pedroza
- Center for Clinical Research and Evidence-Based Medicine, The University of Texas Health Science Center at Houston, Houston, TX USA
| | - Samuel L Aitken
- Center for Antimicrobial Resistance and Microbial Genomics, McGovern Medical School, University of Texas Health Science Center, Houston, Texas, USA
- The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Samuel A Shelburne
- Center for Antimicrobial Resistance and Microbial Genomics, McGovern Medical School, University of Texas Health Science Center, Houston, Texas, USA
- The University of Texas MD Anderson Cancer Center, Houston, TX, USA
- Department of Genomic Medicine, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - David van Duin
- Division of Infectious Diseases, University of North Carolina, Chapel Hill, North Carolina, USA
| | - Truc T Tran
- Center for Infectious Diseases Research, Houston Methodist Research Institute, Houston, Texas, USA
| | - Blake M Hanson
- Center for Antimicrobial Resistance and Microbial Genomics, McGovern Medical School, University of Texas Health Science Center, Houston, Texas, USA
- Center for Infectious Diseases, School of Public Health, University of Texas Health Science Center at Houston, Houston, Texas, USA
| | - Cesar A Arias
- Center for Infectious Diseases Research, Houston Methodist Research Institute, Houston, Texas, USA
- Division of Infectious Diseases, Houston Methodist Hospital, Houston, Texas, USA
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Olson AL, Politikos I, Brunstein C, Milano F, Barker J, Hill JA. Guidelines for Infection Prophylaxis, Monitoring and Therapy in Cord Blood Transplantation. Transplant Cell Ther 2021; 27:359-362. [PMID: 33965172 DOI: 10.1016/j.jtct.2021.01.024] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2021] [Accepted: 01/27/2021] [Indexed: 12/14/2022]
Abstract
As an alternative stem cell source, cord blood (CB) has many advantages. However, delayed engraftment, lack of transferred immunity, and a significant incidence of acute graft-versus-host disease renders CB transplant (CBT) recipients at high risk of infectious complications. This guidance written by CBT and infectious disease experts outlines evidence-based recommendations for the prevention and treatment of opportunistic infections in adult patients undergoing CBT. Topics addressed include bacterial, fungal, viral, pneumocystis jirovcii and toxoplasmosis prophylaxis, suggested PCR monitoring for viruses, therapy for the most commonly encountered infections after CBT. We review key concepts including the recent important role of letermovir in the prevention of CMV reactivation. In instances where there is a paucity of data, practice recommendations are provided, including the duration of antimicrobial prophylaxis.
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Affiliation(s)
- Amanda L Olson
- The University of Texas MD Anderson Cancer Center, Houston, Texas.
| | | | | | - Fillipo Milano
- The Fred Hutchinson Cancer Research Center, Seattle, Washington
| | - Juliet Barker
- Memorial Sloan Kettering Cancer Center, New York, New York
| | - Joshua A Hill
- The Fred Hutchinson Cancer Research Center, Seattle, Washington
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Infection-Related Mortality in Adults and Children Undergoing Allogeneic Hematopoietic Cell Transplantation: An Australian Registry Report. Transplant Cell Ther 2021; 27:798.e1-798.e10. [PMID: 34111574 DOI: 10.1016/j.jtct.2021.05.028] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2021] [Revised: 05/18/2021] [Accepted: 05/31/2021] [Indexed: 11/21/2022]
Abstract
Infection-related mortality (IRM) is the most common non-relapse-related cause of death reported after allogeneic hematopoietic cell transplantation (HCT). Information on the incidence and timing of specific infective organisms and the risk factors for IRM is essential to developing prevention strategies. This report provides the first account of IRM in adults and children undergoing HCT in Australia. Between 2013 and 2018, 2705 adult and 689 pediatric first HCTs were identified from the Australasian Bone Marrow Transplant Recipient Registry database, associated with 1075 (39.7%) total overall deaths in adults and 134 (19.4%) in children. Demographics and causes of death, including infectious etiology and causative organisms, were extracted from the database for adults and children for analysis. At day +100 and 1 year post-HCT, IRM was the leading cause of early post-HCT mortality in adults, accounting for 6.2% and 9.8%, respectively; in children, IRM was the leading cause of post-HCT mortality at day +100 at 2.5% and the second highest cause of post-HCT mortality at 1 year post-HCT at 4.9%, following relapse at 5.8%. In adults, older age, transplantation not in a first complete remission (non-CR1), the use of antithymocyte globulin (ATG) or alemtuzumab, donor-positive/recipient-negative cytomegalovirus (CMV) serostatus, and acute graft-versus-host disease were significant risk factors for IRM. However, in children, age >5 years, acute lymphocytic leukemia as the primary disease, and mismatched unrelated or haploidentical donor source were predictive of IRM. Of the deaths in which an infectious etiology was reported in adults (52.4%), 49.3% were attributed to bacteria, 25.3% to fungus, 21.7% to viruses, and 3.6% to post-transplantation lymphoproliferative disorder (PTLD). The most common organisms were Pseudomonas spp, Enterococcus spp, Candida spp, Aspergillus spp, and CMV. In children where an infectious etiology was reported (64%), 13% were attributed to bacteria, 26% to fungus, 45% to viruses, and 16% to PTLD. This report highlights that IRM was the leading cause of death early post-HCT in Australia. Strategies to reduce IRM, such as individualized pre-transplantation infection risk assessment, rapid diagnostics, and prevention management strategies should be explored to determine whether these outcomes can be improved. In addition, improving the completeness and accuracy of reported data, particularly for infectious pathogens, could assist in directing management strategies to reduce IRM in HCT.
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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.
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8
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Xie O, Slavin MA, Teh BW, Bajel A, Douglas AP, Worth LJ. Epidemiology, treatment and outcomes of bloodstream infection due to vancomycin-resistant enterococci in cancer patients in a vanB endemic setting. BMC Infect Dis 2020; 20:228. [PMID: 32188401 PMCID: PMC7079500 DOI: 10.1186/s12879-020-04952-5] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2019] [Accepted: 03/09/2020] [Indexed: 12/21/2022] Open
Abstract
Background Vancomycin-resistant enterococcus (VRE) is an important cause of infection in immunocompromised populations. Few studies have described the characteristics of vanB VRE infection. We sought to describe the epidemiology, treatment and outcomes of VRE bloodstream infections (BSI) in a vanB predominant setting in malignant hematology and oncology patients. Methods A retrospective review was performed at two large Australian centres and spanning a 6-year period (2008–2014). Evaluable outcomes were intensive care admission (ICU) within 48 h of BSI, all-cause mortality (7 and 30 days) and length of admission. Results Overall, 106 BSI episodes were observed in 96 patients, predominantly Enterococcus faecium vanB (105/106, 99%). Antibiotics were administered for a median of 17 days prior to BSI, and 76/96 (79%) were neutropenic at BSI onset. Of patients screened before BSI onset, 49/72 (68%) were found to be colonised. Treatment included teicoplanin (59), linezolid (6), daptomycin (2) and sequential/multiple agents (21). Mortality at 30-days was 31%. On multivariable analysis, teicoplanin was not associated with mortality at 30 days. Conclusions VRE BSI in a vanB endemic setting occurred in the context of substantive prior antibiotic use and was associated with high 30-day mortality. Targeted screening identified 68% to be colonised prior to BSI. Teicoplanin therapy was not associated with poorer outcomes and warrants further study for vanB VRE BSI in cancer populations.
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Affiliation(s)
- Ouli Xie
- Victorian Infectious Disease Service, Royal Melbourne Hospital, 300 Grattan St, Parkville, 3050, Australia.
| | - Monica A Slavin
- Victorian Infectious Disease Service, Royal Melbourne Hospital, 300 Grattan St, Parkville, 3050, Australia.,Department of Infectious Diseases and Infection Prevention, Peter MacCallum Cancer Centre, Parkville, Australia.,National Centre for Infections in Cancer, Melbourne, Australia
| | - Benjamin W Teh
- Department of Infectious Diseases and Infection Prevention, Peter MacCallum Cancer Centre, Parkville, Australia.,National Centre for Infections in Cancer, Melbourne, Australia
| | - Ashish Bajel
- Department of Haematology, The Royal Melbourne Hospital, Parkville, Australia.,Department of Haematology, Peter MacCallum Cancer Centre, Parkville, Australia
| | - Abby P Douglas
- Department of Infectious Diseases and Infection Prevention, Peter MacCallum Cancer Centre, Parkville, Australia.,National Centre for Infections in Cancer, Melbourne, Australia
| | - Leon J Worth
- Department of Infectious Diseases and Infection Prevention, Peter MacCallum Cancer Centre, Parkville, Australia.,National Centre for Infections in Cancer, Melbourne, Australia
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