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Knudsen MJS, Rubin IMC, Petersen AM. The Effect of Antibiotics on the Eradication of Multidrug-Resistant Organisms in Intestinal Carriers-A Systematic Review with Meta-Analysis. Antibiotics (Basel) 2024; 13:747. [PMID: 39200047 PMCID: PMC11350669 DOI: 10.3390/antibiotics13080747] [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: 06/25/2024] [Revised: 07/25/2024] [Accepted: 08/02/2024] [Indexed: 09/01/2024] Open
Abstract
OBJECTIVES The aim of this systematic review was to investigate the effect of antibiotics on the eradication of multidrug-resistant organisms (MRO) in intestinal carriers. We defined multidrug-resistant organisms as vancomycin-resistant Enterococcus faecium (VREfm), and multidrug-resistant Gram-negative Enterobacterales. Methods: We searched the EMBASE, Cochrane Central, and PubMed databases from inception to medio November 2023. We included randomised and controlled clinical trials (RCTs), that investigated the effect of antibiotics on the eradication of multidrug-resistant organisms in intestinal carriers. Finally, we performed a meta-analysis. RESULTS We included five RTCs in the systematic review. In four studies an effect of antibiotics on the eradication of MRO was shown at the end of intervention, but it was not sustained at follow-up. In the fifth study, the effect at the end of intervention was not reported, and there was no observed effect of the intervention at follow-up. We included four studies in the meta-analysis, and it suggests an effect of antibiotics on the eradication of MRO in intestinal carriers at the end of follow-up with a p-value of 0.04 (95% confidence interval 1.02-1.95). None of the studies reported a significant increase in resistance to the study drug. Gastrointestinal disorders were the most frequent non-severe adverse event. CONCLUSIONS The effect of antibiotics on the eradication of multidrug-resistant organisms in intestinal carriers was not statistically significant in any of the five included studies; however, we found a significant effect in the pooled meta-analysis. As the confidence interval is large, we cannot determine the clinical importance of this finding, and it should be further investigated.
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Affiliation(s)
| | - Ingrid Maria Cecilia Rubin
- Department of Clinical Microbiology, Copenhagen University Hospital–Amager and Hvidovre, 2650 Hvidovre, Denmark; (M.J.S.K.)
| | - Andreas Munk Petersen
- Department of Clinical Microbiology, Copenhagen University Hospital–Amager and Hvidovre, 2650 Hvidovre, Denmark; (M.J.S.K.)
- Gastrounit, Medical Section, Copenhagen University Hospital-Amager and Hvidovre, 2650 Hvidovre, Denmark
- Department of Clinical Medicine, University of Copenhagen, 2200 Copenhagen, Denmark
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2
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Shen H, Xiao D, Zhang Q, Li S, He H, Dai X, Huang H, Ma W. The features of multidrug-resistant organisms between 2016 and March 2023 and its change after the end of zero-COVID-19 policy in a teaching hospital in Shenzhen, China. J Glob Antimicrob Resist 2024; 37:91-92. [PMID: 38458536 DOI: 10.1016/j.jgar.2024.02.021] [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: 10/01/2023] [Revised: 02/21/2024] [Accepted: 02/22/2024] [Indexed: 03/10/2024] Open
Abstract
BACKGROUND To investigate the clinical distribution and changing trend of antibiotic resistance profiles of multidrug-resistant organisms (MDROs), a retrospective study was undertaken. METHODS The characteristics of MDROs isolated from 2016 to March 2023 were retrospectively analysed. The detection rate of these MDROs was compared prior to COVID-19 (Period 1, 2016-2019), during the COVID-19 pandemic with restrictions (Period 2, 2020-2022), and after the end of zero-policy (Period 3, Jan-March, 2023). Antibiotic-resistant genes were detected. RESULTS The overall detection rates of CRPA, CRAB, CREC, CRKP, MRSA, and VREfm were 22.6%, 22.6%, 1.3%, 4.0%, 19.5%, and 3.1%, respectively. The detection rate of CRAB was significantly lower in Period 2 and 3 compared with Period 1 (P < 0.0001). The detection rate of CRPA and VREfm was significantly increased in Period 3 compared with Period 1 and 2 (P < 0.0001). The resistance rate to ticarcillin/clavulanic acid (TIM) and piperacillin/tazobactam (TZP) has gradually increased in CRPA since 2018. NDM and KPC were the most common carbapenemase genes identified in CREC (60.0%) and CRKP isolates (47.8%), respectively. All the 10 VREfm isolates carried the vanA gene. CONCLUSIONS The detection rate of CRAB has decreased since 2018, but a significantly increased prevalence of CRPA and VREfm was seen after the end of zero-policy. An increasing resistance rate to TIM and TZP was seen in CRPA. NDM, KPC, and vanA were the common genes harboured by CREC, CRKP, and VREfm, respectively. Ongoing surveillance after the COVID-19 era is suggested.
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Affiliation(s)
- Hongwei Shen
- Shenzhen Hospital of Southern Medical University, Shenzhen, China.
| | - Danli Xiao
- Southern Medical University, Guangzhou, China
| | - Qiaomin Zhang
- Shenzhen Hospital of Southern Medical University, Shenzhen, China
| | - Shaobo Li
- Shenzhen Hospital of Southern Medical University, Shenzhen, China
| | - Haihong He
- Shenzhen Hospital of Southern Medical University, Shenzhen, China
| | - Xiaoyan Dai
- Shenzhen Hospital of Southern Medical University, Shenzhen, China
| | - Hanlian Huang
- Shenzhen Hospital of Southern Medical University, Shenzhen, China
| | - Wen Ma
- Shenzhen Hospital of Southern Medical University, Shenzhen, China.
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3
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Ciccacci F, De Santo C, Mosconi C, Orlando S, Carestia M, Guarente L, Liotta G, Palombi L, Emberti Gialloreti L. Not only COVID-19: a systematic review of anti-COVID-19 measures and their effect on healthcare-associated infections. J Hosp Infect 2024; 147:133-145. [PMID: 38423132 DOI: 10.1016/j.jhin.2024.02.008] [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: 11/13/2023] [Revised: 02/19/2024] [Accepted: 02/20/2024] [Indexed: 03/02/2024]
Abstract
BACKGROUND Healthcare-associated infections (HAIs) burden healthcare globally. Amid the SARS-CoV-2 pandemic, intensified infection control measures, such as mask usage and hand hygiene, were implemented. AIM To assess the efficacy of these measures in preventing HAIs among hospitalized patients. METHODS Using the PICO framework (Population, Intervention, Comparison, Outcome), the study focused on hospitalized patients and the effectiveness of anti-COVID-19 measures in preventing HAIs. A systematic review of literature published in 2020-2022 was conducted, examining interventions such as mask usage, hand hygiene, and environmental cleaning. FINDINGS This systematic review analysed 42 studies: two in 2020, 21 in 2021, and 19 in 2022. Most studies were from high-income countries (28). Most studies (30 out of 42) reported a reduction in HAIs after implementing anti-COVID-19 measures. Gastrointestinal infections and respiratory tract infections showed significant reduction, unlike bloodstream infections and urinary tract infections. Some wards, like cardiology and neurology, experienced reduced HAIs, unlike intensive care units and coronary care units. There was an increase in studies reporting no effect of hygiene measures on HAIs in 2022, eventually indicating a shift in effectiveness over time. CONCLUSION Anti-COVID-19 measures have shown selective efficacy in preventing HAIs. The study emphasizes the need for context-specific strategies and increased focus on regions with limited resources. Continued research is essential to refine infection control practices, especially in high-risk settings.
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Affiliation(s)
- F Ciccacci
- Departmental Faculty of Medicine and Surgery, Saint Camillus International University of Health and Medical Sciences, Rome, Italy
| | - C De Santo
- Department of Biomedicine and Prevention, University of Rome Tor Vergata, Rome, Italy
| | - C Mosconi
- Department of Biomedicine and Prevention, University of Rome Tor Vergata, Rome, Italy
| | - S Orlando
- Department of Biomedicine and Prevention, University of Rome Tor Vergata, Rome, Italy.
| | - M Carestia
- Department of Biomedicine and Prevention, University of Rome Tor Vergata, Rome, Italy
| | - L Guarente
- Department of Biomedicine and Prevention, University of Rome Tor Vergata, Rome, Italy
| | - G Liotta
- Department of Biomedicine and Prevention, University of Rome Tor Vergata, Rome, Italy
| | - L Palombi
- Department of Biomedicine and Prevention, University of Rome Tor Vergata, Rome, Italy; Catholic University Our Lady of Good Counsel, Tirana, Albania
| | - L Emberti Gialloreti
- Department of Biomedicine and Prevention, University of Rome Tor Vergata, Rome, Italy
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Boccabella L, Palma EG, Abenavoli L, Scarlata GGM, Boni M, Ianiro G, Santori P, Tack JF, Scarpellini E. Post-Coronavirus Disease 2019 Pandemic Antimicrobial Resistance. Antibiotics (Basel) 2024; 13:233. [PMID: 38534668 DOI: 10.3390/antibiotics13030233] [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: 01/07/2024] [Revised: 02/04/2024] [Accepted: 02/28/2024] [Indexed: 03/28/2024] Open
Abstract
BACKGROUND AND AIM Antimicrobial resistance (AMR) is a chronic issue of our Westernized society, mainly because of the uncontrolled and improper use of antimicrobials. The coronavirus disease 2019 (COVID-19) pandemic has triggered and expanded AMR diffusion all over the world, and its clinical and therapeutic features have changed. Thus, we aimed to review evidence from the literature on the definition and causative agents of AMR in the frame of the COVID-19 post-pandemic era. METHODS We conducted a search on PubMed and Medline for original articles, reviews, meta-analyses, and case series using the following keywords, their acronyms, and their associations: antibiotics, antimicrobial resistance, severe acute respiratory syndrome coronavirus 2 (SARS-CoV2), COVID-19 pandemic, personal protective equipment. RESULTS AMR had a significant rise in incidence both in in-hospital and outpatient populations (ranging from 5 up to 50%) worldwide, but with a variegated profile according to the germ and microorganism considered. Not only bacteria but also fungi have developed more frequent and diffuse AMR. These findings are explained by the increased use and misuse of antibiotics and preventive measures during the first waves of the SARS-CoV2 pandemic, especially in hospitalized patients. Subsequently, the reduction in and end of the lockdown and the use of personal protective equipment have allowed for the indiscriminate circulation of resistant microorganisms from low-income countries to the rest of the world with the emergence of new multi- and polyresistant organisms. However, there is not a clear association between COVID-19 and AMR changes in the post-pandemic period. CONCLUSIONS AMR in some microorganisms has significantly increased and changed its characteristics during and after the end of the pandemic phase of COVID-19. An integrated supranational monitoring approach to this challenge is warranted in the years to come. In detail, a rational, personalized, and regulated use of antibiotics and antimicrobials is needed.
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Affiliation(s)
- Lucia Boccabella
- Internal Medicine Unit, Madonna del Soccorso General Hospital, Via Luciano Manara 7, 63074 San Benedetto del Tronto, Italy
| | - Elena Gialluca Palma
- Internal Medicine Clinics, Riuniti University Hospital, Polytechnics University of Marche, 60121 Ancona, Italy
| | - Ludovico Abenavoli
- Department of Health Sciences, University "Magna Graecia", 88100 Catanzaro, Italy
| | | | - Mariavirginia Boni
- Vascular Medicine Unit, "C. and G. Mazzoni" General Hospital, 63076 Ascoli Piceno, Italy
| | - Gianluca Ianiro
- Gastroenterology Unit, Fondazione Policlinico Gemelli, Catholic University of Sacred Heart, 00168 Rome, Italy
| | - Pierangelo Santori
- Internal Medicine Unit, Madonna del Soccorso General Hospital, Via Luciano Manara 7, 63074 San Benedetto del Tronto, Italy
| | - Jan F Tack
- Translational Research in GastroIntestinal Disorders (T.A.R.G.I.D.), Gasthuisberg University Hospital, KU Leuven, Herestraat 49, 3000 Leuven, Belgium
| | - Emidio Scarpellini
- Internal Medicine Unit, Madonna del Soccorso General Hospital, Via Luciano Manara 7, 63074 San Benedetto del Tronto, Italy
- Translational Research in GastroIntestinal Disorders (T.A.R.G.I.D.), Gasthuisberg University Hospital, KU Leuven, Herestraat 49, 3000 Leuven, Belgium
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Mitchell BG, Stewardson AJ, Kerr L, Ferguson JK, Curtis S, Busija L, Lydeamore MJ, Graham K, Russo PL. The incidence of nosocomial bloodstream infection and urinary tract infection in Australian hospitals before and during the COVID-19 pandemic: an interrupted time series study. Antimicrob Resist Infect Control 2023; 12:61. [PMID: 37400858 DOI: 10.1186/s13756-023-01268-2] [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: 03/15/2023] [Accepted: 06/20/2023] [Indexed: 07/05/2023] Open
Abstract
BACKGROUND The COVID-19 pandemic has had a significant impact on healthcare including increased awareness of infection prevention and control (IPC). The aim of this study was to explore if the heightened awareness of IPC measures implemented in response to the pandemic influenced the rates of healthcare associated infections (HAI) using positive bloodstream and urine cultures as a proxy measure. METHODS A 3 year retrospective review of laboratory data from 5 hospitals (4 acute public, 1 private) from two states in Australia was undertaken. Monthly positive bloodstream culture data and urinary culture data were collected from January 2017 to March 2021. Occupied bed days (OBDs) were used to generate monthly HAI incidence per 10,000 OBDs. An interrupted time series analysis was undertaken to compare incidence pre and post February 2020 (the pre COVID-19 cohort and the COVID-19 cohort respectively). A HAI was assumed if positive cultures were obtained 48 h after admission and met other criteria. RESULTS A total of 1,988 bloodstream and 7,697 urine positive cultures were identified. The unadjusted incident rate was 25.5 /10,000 OBDs in the pre-COVID-19 cohort, and 25.1/10,000 OBDs in the COVID-19 cohort. The overall rate of HAI aggregated for all sites did not differ significantly between the two periods. The two hospitals in one state which experienced an earlier and larger outbreak demonstrated a significant downward trend in the COVID-19 cohort (p = 0.011). CONCLUSION These mixed findings reflect the uncertainty of the effect the pandemic has had on HAI's. Factors to consider in this analysis include local epidemiology, differences between public and private sector facilities, changes in patient populations and profiles between hospitals, and timing of enhanced IPC interventions. Future studies which factor in these differences may provide further insight on the effect of COVID-19 on HAIs.
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Affiliation(s)
- Brett G Mitchell
- School of Nursing, Avondale University, Cooranbong, NSW, 2265, Australia
- Nursing and Midwifery, Monash University, Frankston, VIC, 3199, Australia
- Gosford Hospital, Central Coast Local Health District, NSW, 2250, Australia
| | - Andrew J Stewardson
- Department of Infectious Diseases, The Alfred and Central Clinical School, Monash University, Melbourne, VIC, 3004, Australia
| | - Lucille Kerr
- Nursing and Midwifery, Monash University, Frankston, VIC, 3199, Australia
- Department of Nursing Research, Cabrini Institute, Malvern, VIC, 3144, Australia
- School of Nursing and Midwifery, Deakin University, Burwood, Australia
| | - John K Ferguson
- Division of Medicine, John Hunter Hospital, Newcastle Regional Mail Centre, 2310, NSW, Australia
- University of Newcastle, Callaghan, NSW, 2308, Australia
- Infection Prevention Service, Hunter New England Health, John Hunter Hospital, NSW, 2310, Australia
| | - Stephanie Curtis
- Department of Infectious Diseases, The Alfred and Central Clinical School, Monash University, Melbourne, VIC, 3004, Australia
| | - Ljoudmila Busija
- Department of Epidemiology and Preventive Medicine, School of Public Health and Preventive Medicine, Monash University, Melbourne, VIC, 3004, Australia
| | - Michael J Lydeamore
- Department of Econometrics and Business Statistics, Monash University, Melbourne, 3800, Australia
| | - Kirsty Graham
- Infection Prevention and Control, Central Coast Local Health District, Gosford, NSW, 2250, Australia
| | - Philip L Russo
- School of Nursing, Avondale University, Cooranbong, NSW, 2265, Australia.
- Nursing and Midwifery, Monash University, Frankston, VIC, 3199, Australia.
- Department of Nursing Research, Cabrini Institute, Malvern, VIC, 3144, Australia.
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Misiakou MA, Hertz FB, Schønning K, Häussler S, Nielsen KL. Emergence of linezolid-resistant Enterococcus faecium in a tertiary hospital in Copenhagen. Microb Genom 2023; 9:mgen001055. [PMID: 37410656 PMCID: PMC10438815 DOI: 10.1099/mgen.0.001055] [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: 02/13/2023] [Accepted: 05/26/2023] [Indexed: 07/08/2023] Open
Abstract
Linezolid is used as first-line treatment of infections caused by vancomycin-resistant Enterococcus faecium. However, resistance to linezolid is increasingly detected. The aim of the present study was to elucidate the causes and mechanisms for the increase in linezolid-resistant E. faecium at Copenhagen University Hospital - Rigshospitalet. We therefore combined patient information on linezolid treatment with whole-genome sequencing data for vancomycin- or linezolid-resistant E. faecium isolates that had been systematically collected since 2014 (n=458). Whole-genome sequencing was performed for multilocus sequence typing (MLST), identification of linezolid resistance-conferring genes/mutations and determination of phylogenetically closely related strains. The collection of E. faecium isolates belonged to prevalent vancomycin-resistant MLST types. Among these, we identified clusters of closely related linezolid-resistant strains compatible with nosocomial transmission. We also identified linezolid-resistant enterococcus isolates not genetically closely related to other isolates compatible with de novo generation of linezolid resistance. Patients with the latter isolates were significantly more frequently exposed to linezolid treatment than patients with related linezolid-resistant enterococcus isolates. We also identified six patients who initially carried a vancomycin-resistant, linezolid-sensitive enterococcus, but from whom vancomycin-resistant, linezolid-resistant enterococci (LVRE) closely related to their initial isolate were recovered after linezolid treatment. Our data illustrate that linezolid resistance may develop in the individual patient subsequent to linezolid exposure and can be transmitted between patients in a hospital setting.
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Affiliation(s)
| | | | - Kristian Schønning
- Department of Clinical Microbiology, Rigshospitalet, Copenhagen, Denmark
- Department of Clinical Medicine, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Susanne Häussler
- Department of Clinical Microbiology, Rigshospitalet, Copenhagen, Denmark
- Twincore, Centre for Experimental and Clinical Infection Research, Hannover, Germany
| | - Karen Leth Nielsen
- Department of Clinical Microbiology, Rigshospitalet, Copenhagen, Denmark
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7
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Langford BJ, Soucy JPR, Leung V, So M, Kwan AT, Portnoff JS, Bertagnolio S, Raybardhan S, MacFadden DR, Daneman N. Antibiotic resistance associated with the COVID-19 pandemic: a systematic review and meta-analysis. Clin Microbiol Infect 2023; 29:302-309. [PMID: 36509377 PMCID: PMC9733301 DOI: 10.1016/j.cmi.2022.12.006] [Citation(s) in RCA: 59] [Impact Index Per Article: 59.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2022] [Revised: 11/29/2022] [Accepted: 12/02/2022] [Indexed: 12/13/2022]
Abstract
BACKGROUND COVID-19 and antimicrobial resistance (AMR) are two intersecting global public health crises. OBJECTIVE We aimed to describe the impact of the COVID-19 pandemic on AMR across health care settings. DATA SOURCE A search was conducted in December 2021 in WHO COVID-19 Research Database with forward citation searching up to June 2022. STUDY ELIGIBILITY Studies evaluating the impact of COVID-19 on AMR in any population were included and influencing factors were extracted. Reporting of enhanced infection prevention and control and/or antimicrobial stewardship programs was noted. METHODS Pooling was done separately for Gram-negative and Gram-positive organisms. Random-effects meta-analysis was performed. RESULTS Of 6036 studies screened, 28 were included and 23 provided sufficient data for meta-analysis. The majority of studies focused on hospital settings (n = 25, 89%). The COVID-19 pandemic was not associated with a change in the incidence density (incidence rate ratio 0.99, 95% CI: 0.67-1.47) or proportion (risk ratio 0.91, 95% CI: 0.55-1.49) of methicillin-resistant Staphylococcus aureus or vancomycin-resistant enterococci cases. A non-statistically significant increase was noted for resistant Gram-negative organisms (i.e. extended-spectrum beta-lactamase, carbapenem-resistant Enterobacterales, carbapenem or multi-drug resistant or carbapenem-resistant Pseudomonas aeruginosa or Acinetobacter baumannii, incidence rate ratio 1.64, 95% CI: 0.92-2.92; risk ratio 1.08, 95% CI: 0.91-1.29). The absence of reported enhanced infection prevention and control and/or antimicrobial stewardship programs initiatives was associated with an increase in gram-negative AMR (risk ratio 1.11, 95% CI: 1.03-1.20). However, a test for subgroup differences showed no statistically significant difference between the presence and absence of these initiatives (p 0.40). CONCLUSION The COVID-19 pandemic may have hastened the emergence and transmission of AMR, particularly for Gram-negative organisms in hospital settings. But there is considerable heterogeneity in both the AMR metrics used and the rate of resistance reported across studies. These findings reinforce the need for strengthened infection prevention, antimicrobial stewardship, and AMR surveillance in the context of the COVID-19 pandemic.
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Affiliation(s)
- Bradley J. Langford
- Public Health Ontario, Toronto, Ontario, Canada,Dalla Lana School of Public Health, University of Toronto, Toronto, Ontario, Canada,Corresponding author. Bradley J. Langford, Public Health Ontario, Health Protection, 480 University Avenue, Toronto, Ontario M5G 1V2, Canada
| | - Jean-Paul R. Soucy
- Dalla Lana School of Public Health, University of Toronto, Toronto, Ontario, Canada
| | - Valerie Leung
- Public Health Ontario, Toronto, Ontario, Canada,Toronto East Health Network, Toronto, Ontario, Canada
| | - Miranda So
- Leslie Dan Faculty of Pharmacy, University of Toronto, Toronto, Ontario, Canada
| | - Angela T.H. Kwan
- Department of Medicine, University of Ottawa, Ottawa, Ontario, Canada
| | - Jacob S. Portnoff
- Faculty of Medicine, University of Queensland, Brisbane, Queensland, Australia
| | - Silvia Bertagnolio
- Department of Surveillance, Prevention and Control, Division of Antimicrobial Resistance, World Health Organization, Geneva, Switzerland
| | | | - Derek R. MacFadden
- Department of Medicine, University of Ottawa, Ottawa, Ontario, Canada,The Ottawa Hospital, Ottawa, Ontario, Canada
| | - Nick Daneman
- Public Health Ontario, Toronto, Ontario, Canada,Institute of Health Policy, Management and Evaluation, University of Toronto, Toronto, Ontario, Canada,Sunnybrook Health Sciences Centre, Toronto, Ontario, Canada
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8
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No Effect of Lactobacillus rhamnosus GG on Eradication of Colonization by Vancomycin-Resistant Enterococcus faecium or Microbiome Diversity in Hospitalized Adult Patients. Microbiol Spectr 2022; 10:e0234821. [PMID: 35475684 PMCID: PMC9241610 DOI: 10.1128/spectrum.02348-21] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
The purpose of this trial was to evaluate the efficacy of a 4-week supplementation of Lactobacillus rhamnosus GG (LGG) in eliminating the gastrointestinal carrier state of vancomycin-resistant Enterococcus faecium (VREfm) in hospitalized adults. The primary outcome of the study was the number of patients with cleared VREfm colonization after the 4-week intervention. Secondary outcomes were clearance of VREfm colonization at weeks 8, 16, and 24, number of VREfm infections (isolated from nonintestinal foci), and changes in fecal microbiome diversity after the intervention. The trial was a multicenter, randomized, double-blind, placebo-controlled trial in hospitalized adult VREfm carriers. Patients were enrolled and randomized to receive 60 billion CFU of LGG daily or placebo for 4 weeks. For a subgroup of patients, rectal swabs for VREfm were collected also at 8, 16, and 24 weeks and analyzed using shotgun metagenomics. Patients ingesting a minimum of 50% of the probiotic during the 4-week intervention were included in subsequent outcome analyses (48 of 81 patients). Twelve of 21 patients in the LGG group (57%) compared to 15 of 27 patients in the placebo group (56%) cleared their VREfm carriage. Eighteen patients completed the entire 24-week intervention with the same minimum compliancy. Of these, almost 90% in both groups cleared their VREfm carriage. We found a statistically significant difference between VREfm clearers and nonclearers regarding metronidazole and vancomycin usage as well as length of hospitalization after inclusion. The microbiome analyses revealed no significant difference in alpha diversity between the LGG and the placebo group. Beta diversity differed between the groups and the different time points. This study did not show an effect of LGG in eradication of VREfm after a 4-week intervention. IMPORTANCE Whereas other studies exploring the effect of L. rhamnosus in clearing VREfm from the intestine included children and adults, with a wider age range, our study consisted of a geriatric patient cohort. The natural clearance of VREfm in this study was almost 60% after 4 weeks, thus much higher than described previously. Also, this study characterizes the microbiome of VREfm patients in detail. This article showed no effect of the probiotic L. rhamnosus in clearing VREfm from the intestine of patients.
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9
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Knudsen MJS, Rubin IMC, Gisselø K, Mollerup S, Petersen AM, Pinholt M, Westh H, Bartels MD. The use of core genome multilocus sequence typing to determine the duration of vancomycin-resistant Enterococcus faecium outbreaks. APMIS 2022; 130:323-329. [PMID: 35253272 DOI: 10.1111/apm.13216] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2021] [Accepted: 02/20/2022] [Indexed: 11/29/2022]
Abstract
The prevalence of vancomycin-resistant Enterococcus faecium has increased rapidly, and in Denmark, we are facing an endemic outbreak situation in hospitals. The aim of this study was to use whole-genome sequencing (WGS) and core genome multilocus sequencing typing (cgMLST) to determine the duration of VREfm outbreaks and thereby evaluate the effect of our infection control strategies. We included all VREfm isolates from six hospitals in the Capital Region of Denmark that were sequenced between 2012 and 2020. Ward data were collected from our laboratory information system. A ward outbreak was defined as two patient samples from the same ward within a period of 30 days belonging to the same cgMLST cluster. cgMLST complex types were determined using Ridom SeqSphere v7.2.3, where a maximum of 20 allelic differences between isolates defines a cluster. We included 1690 patient isolates between 2012 and 2020. Our collection consisted of 45 unique clusters and 227 ward outbreaks. The median duration of outbreaks was 20 days. We reported a median outbreak duration of VREfm outbreaks based on WGS data to be 20 days, and thus concluded that our infection control precautions are adequate.
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Affiliation(s)
| | - Ingrid Maria Cecilia Rubin
- Department of Clinical Microbiology, Copenhagen University Hospital - Amager and Hvidovre, Copenhagen, Denmark.,Department of Gastroenterology, Copenhagen University Hospital - Amager and Hvidovre, Copenhagen, Denmark
| | - Katrine Gisselø
- Department of Clinical Microbiology, Copenhagen University Hospital - Amager and Hvidovre, Copenhagen, Denmark
| | - Sarah Mollerup
- Department of Clinical Microbiology, Copenhagen University Hospital - Amager and Hvidovre, Copenhagen, Denmark
| | - Andreas Munk Petersen
- Department of Clinical Microbiology, Copenhagen University Hospital - Amager and Hvidovre, Copenhagen, Denmark.,Department of Gastroenterology, Copenhagen University Hospital - Amager and Hvidovre, Copenhagen, Denmark.,Department of Clinical Medicine, University of Copenhagen, Copenhagen, Denmark
| | - Mette Pinholt
- Department of Clinical Microbiology, Copenhagen University Hospital - Amager and Hvidovre, Copenhagen, Denmark
| | - Henrik Westh
- Department of Clinical Microbiology, Copenhagen University Hospital - Amager and Hvidovre, Copenhagen, Denmark.,Department of Clinical Medicine, University of Copenhagen, Copenhagen, Denmark
| | - Mette Damkjaer Bartels
- Department of Clinical Microbiology, Copenhagen University Hospital - Amager and Hvidovre, Copenhagen, Denmark.,Department of Clinical Medicine, University of Copenhagen, Copenhagen, Denmark
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