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Gajdács M, Matuz M, Ria B, Pető Z, Hajdú E. Correlation between Stenotrophomonas maltophilia incidence and systemic antibiotic use: A 10-year retrospective, observational study in Hungary. Eur J Microbiol Immunol (Bp) 2024; 14:185-194. [PMID: 38441614 PMCID: PMC11097780 DOI: 10.1556/1886.2024.00022] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2024] [Accepted: 02/22/2024] [Indexed: 05/16/2024] Open
Abstract
Extensive use of carbapenems may lead to selection pressure for Stenotrophomonas maltophilia (SM) in hospital environments. The aim of our study was to assess the possible association between systemic antibiotic use and the incidence of SM. A retrospective, observational study was carried out in a tertiary-care hospital in Hungary, between January 1st 2010 and December 31st 2019. Incidence-density for SM and SM resistant to trimethoprim-sulfamethoxazole (SXT) was standardized for 1000 patient-days, while systemic antibiotic use was expressed as defined daily doses (DDDs) per 100 patient-days. Mean incidence density for SM infections was 0.42/1000 patient-days; 11.08% were were resistant to SXT, the mean incidence density for SXT-resistant SM was 0.047/1000 patient-days. Consumption rate for colistin, glycopeptides and carbapenems increased by 258.82, 278.94 and 372.72% from 2010 to 2019, respectively. Strong and significant positive correlations were observed with the consumption of carbapenems (r: 0.8759; P < 0.001 and r: 0.8968; P < 0.001), SXT (r: 0.7552; P = 0.011 and r: 0.7004; P = 0.024), and glycopeptides (r: 0.7542; P = 0.012 and r: 0.8138; P < 0.001) with SM and SXT-resistant SM incidence-density/1000 patient-days, respectively. Implementation of institutional carbapenem-sparing strategies are critical in preserving these life-saving drugs, and may affect the microbial spectrum of infections in clinical settings.
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Affiliation(s)
- Márió Gajdács
- Department of Oral Biology and Experimental Dental Research, Faculty of Dentistry, University of Szeged, 6720 Szeged, Tisza Lajos krt. 64-66., Hungary
| | - Mária Matuz
- Central Pharmacy Department, Albert Szent-Györgyi Medical Center, University of Szeged, 6725 Szeged, Semmelweis utca 6., Hungary
- Institute of Clinical Pharmacy, Faculty of Pharmacy, University of Szeged, 6725 Szeged, Szikra utca 8., Hungary
| | - Benkő Ria
- Central Pharmacy Department, Albert Szent-Györgyi Medical Center, University of Szeged, 6725 Szeged, Semmelweis utca 6., Hungary
- Institute of Clinical Pharmacy, Faculty of Pharmacy, University of Szeged, 6725 Szeged, Szikra utca 8., Hungary
- Department of Emergency Medicine, Albert Szent-Györgyi Medical Center, University of Szeged, 6725 Szeged, Semmelweis utca 6., Hungary
| | - Zoltán Pető
- Department of Emergency Medicine, Albert Szent-Györgyi Medical Center, University of Szeged, 6725 Szeged, Semmelweis utca 6., Hungary
| | - Edit Hajdú
- Department of Internal Medicine Infectiology Unit, Albert Szent-Györgyi Clinical Centre, University of Szeged, 6725 Szeged, Állomás Street 1–3, Hungary
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Wang J, Foxman B, Rao K, Cassone M, Gibson K, Mody L, Snitkin ES. Association of patient clinical and gut microbiota features with vancomycin-resistant enterococci environmental contamination in nursing homes: a retrospective observational study. THE LANCET. HEALTHY LONGEVITY 2023; 4:e600-e607. [PMID: 37924841 DOI: 10.1016/s2666-7568(23)00188-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2023] [Revised: 08/22/2023] [Accepted: 08/29/2023] [Indexed: 11/06/2023] Open
Abstract
BACKGROUND Preventing transmission is crucial for reducing infections with multidrug-resistant organisms (MDROs) in nursing homes. To identify resident characteristics associated with MDRO spread, we investigated associations between patient characteristics and contamination of their proximate room surfaces with vancomycin-resistant enterococci (VRE). METHODS In this retrospective observational study, we used demographic and clinical data (including data on comorbidities, physical independence, catheter use within the past 30 days, and antibiotic exposure within the past 30 days) and surveillance cultures of patient body sites and room surfaces at enrolment and during weekly follow-up visits within the first month, and monthly thereafter (up to 6 months), in six US nursing homes collected in a previous clinical trial (September, 2016, to August, 2018). We did 16S rRNA gene sequencing on perirectal surveillance swabs to investigate the association between the gut microbiota and the culture status of participants and their rooms. FINDINGS We included 245 participants (mean age 72·5 years [SD 13·6]; 111 [45%] were men, 134 [55%] were women, 132 [54%] were non-Hispanic white, and 112 [46%] were African American). We collected 2802 participant samples and 5592 environmental samples. At baseline, VRE colonisation was present in 49 (20%) participants, with environmental surfaces being contaminated in 36 (73%) of these patients. Hand contamination among VRE-colonised participants was more common in those with environmental contamination compared with those without (50 [51%] of 99 vs seven [13%] of 55; p<0·0001). We found a correlation between hand contamination and both groin and perirectal colonisation and contamination of various high-touch room surfaces (Cohen's κ 0·43). We found participant microbiota composition to be associated with antibiotic receipt within the past 30 days (high-risk antibiotics p=0·011 and low-risk antibiotics p=0·0004) and participant VRE colonisation status, but not environmental contamination among VRE-colonised participants (participant only vs uncolonised p=0·071, both participant and environment vs uncolonised p=0·025, and participant only vs participant and environment p=0·29). Multivariable analysis to identify independent factors associated with VRE-colonised participants contaminating their environment identified antibiotic exposure (adjusted odds ratio 2·75 [95% CI 1·22-6·16]) and male sex (2·75 [1·24-6·08]) as being associated with increased risk of environmental contamination, and physical dependence as being associated with a reduced risk of environmental contamination (0·91 [0·83-0·99]). INTERPRETATION Our data support antibiotic use and interaction with proximal surfaces by physically independent nursing home residents as under-appreciated drivers of environmental contamination among VRE-colonised residents. Integrating resident hand-hygiene education and antimicrobial stewardship will strengthen efforts to reduce MDROs in nursing homes. FUNDING US Centers for Disease Control and Prevention, National Institute of Health, Canadian Institutes of Health Research, and University of Michigan.
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Affiliation(s)
- Joyce Wang
- Department of Microbiology and Immunology, University of Michigan Medical School, Ann Arbor, MI, USA
| | - Betsy Foxman
- Center for Molecular and Clinical Epidemiology of Infectious Diseases, Department of Epidemiology, University of Michigan School of Public Health, Ann Arbor, MI, USA
| | - Krishna Rao
- Division of Infectious Diseases, Department of Medicine, University of Michigan Medical School, Ann Arbor, MI, USA
| | - Marco Cassone
- Division of Geriatrics and Palliative Care Medicine, University of Michigan Medical School, Ann Arbor, MI, USA
| | - Kristen Gibson
- Division of Geriatrics and Palliative Care Medicine, University of Michigan Medical School, Ann Arbor, MI, USA
| | - Lona Mody
- Division of Geriatrics and Palliative Care Medicine, University of Michigan Medical School, Ann Arbor, MI, USA; Geriatric Research Education and Clinical Center, VA Ann Arbor Healthcare System, Ann Arbor, MI, USA
| | - Evan S Snitkin
- Department of Microbiology and Immunology, University of Michigan Medical School, Ann Arbor, MI, USA; Division of Infectious Diseases, Department of Medicine, University of Michigan Medical School, Ann Arbor, MI, USA.
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Kanamori H, Rutala WA, Sickbert-Bennett EE, Weber DJ. Role of the contaminated environment in transmission of multidrug-resistant organisms in nursing homes and infection prevention. Am J Infect Control 2023; 51:A151-A157. [PMID: 37890946 DOI: 10.1016/j.ajic.2023.01.003] [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: 12/31/2022] [Accepted: 01/05/2023] [Indexed: 10/29/2023]
Abstract
BACKGROUND With aging of the population in the United States, there are more people in long-term care facilities than in hospitals. Nursing home residents have a high prevalence of colonization with multidrug-resistant organisms (MDROs). A shared environment with vulnerable patients can facilitate intra- and inter-facility transmission of MDROs. The aim of this paper is to examine the role of the nursing home environment in MDRO transmission and provide infection prevention strategies. METHODS We searched the published literature and reviewed selected articles on contamination, transmission, and infection associated with the nursing home environment. RESULTS Nursing home residents were frequently colonized with MDROs, leading to contamination of the surrounding environment with the same pathogen. Surface contamination with MDROs was common in nursing home patient rooms, and to a substantial but lesser frequency in common rooms. Shared rooms were a risk factor for MDRO transmission between patients. CONCLUSIONS Since outbreaks and infections via the environmental contamination cause substantial burden of morbidity and mortality in the nursing home residents, it is essential for healthcare personnel to recognize the role of the nursing home environment in infection transmission and adhere to the current infection prevention guidelines for cleaning and disinfection of environmental surfaces.
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Affiliation(s)
- Hajime Kanamori
- Department of Infectious Diseases, Internal Medicine, Tohoku University Graduate School of Medicine, Sendai, Japan; Division of Infectious Diseases, University of North Carolina School of Medicine, Chapel Hill, NC.
| | - William A Rutala
- Division of Infectious Diseases, University of North Carolina School of Medicine, Chapel Hill, NC
| | - Emily E Sickbert-Bennett
- Division of Infectious Diseases, University of North Carolina School of Medicine, Chapel Hill, NC; Infection Prevention Department, UNC Medical Center, Chapel Hill, NC
| | - David J Weber
- Division of Infectious Diseases, University of North Carolina School of Medicine, Chapel Hill, NC; Infection Prevention Department, UNC Medical Center, Chapel Hill, NC
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Blane B, Coll F, Raven K, Allen O, Kappeler ARM, Pai S, Floto RA, Peacock SJ, Gouliouris T. Impact of a new hospital with close to 100% single-occupancy rooms on environmental contamination and incidence of vancomycin-resistant Enterococcus faecium colonization or infection: a genomic surveillance study. J Hosp Infect 2023; 139:192-200. [PMID: 37451408 DOI: 10.1016/j.jhin.2023.06.025] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2023] [Revised: 06/28/2023] [Accepted: 06/29/2023] [Indexed: 07/18/2023]
Abstract
BACKGROUND Vancomycin-resistant Enterococcus faecium (VRE) is a leading cause of nosocomial infection, driven by its ability to spread between patients and persist in the hospital environment. AIM To investigate the impact of a long-established cardiothoracic hospital moving to new premises with close to 100% single-occupancy rooms on the rates of environmental contamination and infection or colonization by VRE. METHODS Prospective environmental surveillance for VRE was conducted at five time-points between April and November 2019, once in the original building, and four times in the new building. Incidence rate ratios (IRRs) of VRE infection/colonization were determined for the one-year period before and after the hospital move, and compared to a nearby hospital. FINDINGS In the original location, the first environmental screen found 29% VRE positivity. The following four screens in the new location showed a significant reduction in positivity (1-6%; P<0.0001). The VRE infection/colonization rates were halved in the new location (IRR: 0.56; 95% confidence interval: 0.38-0.84), compared to the original location, contrasting with an increase in a nearby hospital (1.62; 1.17-2.27) over the same time-period. Genomic analysis of the environmental isolates was consistent with reduced transmission in the new hospital. CONCLUSION The use of single-occupancy rooms was associated with reduced environmental contamination with VRE, and lower transmission and isolation of VRE from clinical samples. The cost-effectiveness of single-occupancy room hospitals in reducing healthcare-associated infections should be reassessed in the context of operational costs of emerging pandemic and increasing antimicrobial resistance threats.
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Affiliation(s)
- B Blane
- Department of Medicine, Addenbrooke's Hospital, Cambridge, UK.
| | - F Coll
- Department of Infection Biology, Faculty of Infectious and Tropical Diseases, London School of Hygiene & Tropical Medicine, London, UK
| | - K Raven
- Department of Medicine, Addenbrooke's Hospital, Cambridge, UK
| | - O Allen
- Royal Papworth Hospital NHS Foundation Trust, Cambridge, UK
| | - A R M Kappeler
- Royal Papworth Hospital NHS Foundation Trust, Cambridge, UK
| | - S Pai
- Royal Papworth Hospital NHS Foundation Trust, Cambridge, UK
| | - R A Floto
- Royal Papworth Hospital NHS Foundation Trust, Cambridge, UK; Victor Phillip Dahdaleh Heart and Lung Research Institute, University of Cambridge, Cambridge, UK
| | - S J Peacock
- Department of Medicine, Addenbrooke's Hospital, Cambridge, UK; Cambridge University Hospitals NHS Foundation Trust, UK
| | - T Gouliouris
- Department of Medicine, Addenbrooke's Hospital, Cambridge, UK; Cambridge University Hospitals NHS Foundation Trust, UK
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Cassone M, Wang J, Lansing BJ, Mantey J, Gibson KE, Gontjes KJ, Mody L. Diversity and Persistence of MRSA and VRE in Skilled Nursing Facilities: Environmental Screening, Whole Genome Sequencing, Development of a Dispersion Index. J Hosp Infect 2023:S0195-6701(23)00140-8. [PMID: 37160232 DOI: 10.1016/j.jhin.2023.04.015] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2023] [Revised: 04/28/2023] [Accepted: 04/30/2023] [Indexed: 05/11/2023]
Abstract
BACKGROUND Environmental contamination with methicillin-resistant Staphylococcus aureus (MRSA) and vancomycin-resistant Enterococcus (VRE) in skilled nursing facilities (SNFs) may contribute to patient acquisition. We assessed diversity and association of MRSA and VRE isolates in a SNF wing and developed a mathematical index to define each strain's tendency to persist in rooms and spread horizontally. METHODS Longitudinal study of MRSA and VRE colonization and contamination among successive patient occupancies in a cluster of nine SNF private rooms during eight months characterized by microbiological testing and whole genome isolate typing. 'Dispersion index" of a strain is defined as the number of rooms it was found in (including the patient), divided by the average of times it was found consecutively in the same room. FINDINGS MRSA (ten strain types) and VRE (seven types) were recovered from room or patient in 16.4% and 35.6% of the occupancies, respectively. MRSA showed moderate horizontal spread and several episodes of same-room persistence (three distinct strain types) (overall dispersion index: 1.08). VRE showed high tendency towards horizontal spread /new introductions (overall dispersion index: 3.25), and only one confirmed persistence episode. INTERPRETATION The emerging picture of high diversity among contaminating strains and high likelihood of room persistence despite terminal cleaning (MRSA) and horizontal spread between rooms (VRE) in this setting calls for improved cleaning practices, heightened contact precautions, and most of all to establish individually tailored facility screening programs to enable informed choices based on local, measurable and actionable epidemiologic parameters. FUNDING University of Michigan OAIC REC Scholarship to M.C. National Institutes of Health K24 AG050685 to L.M.
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Affiliation(s)
- M Cassone
- Division of Geriatric & Palliative Medicine, Michigan Medicine.
| | - J Wang
- Department of Microbiology and Immunology, Michigan Medicine
| | - B J Lansing
- Division of Geriatric & Palliative Medicine, Michigan Medicine
| | - J Mantey
- Division of Geriatric & Palliative Medicine, Michigan Medicine
| | - K E Gibson
- Division of Geriatric & Palliative Medicine, Michigan Medicine
| | - K J Gontjes
- Division of Geriatric & Palliative Medicine, Michigan Medicine; Department of Epidemiology, University of Michigan School of Public Health
| | - L Mody
- Division of Geriatric & Palliative Medicine, Michigan Medicine; Geriatrics Research Education & Clinical Center, VA Ann Arbor Healthcare System
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Ullrich C, Luescher AM, Koch J, Grass RN, Sax H. Silica nanoparticles with encapsulated DNA (SPED) to trace the spread of pathogens in healthcare. Antimicrob Resist Infect Control 2022; 11:4. [PMID: 35012659 PMCID: PMC8743744 DOI: 10.1186/s13756-021-01041-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2021] [Accepted: 12/06/2021] [Indexed: 01/05/2023] Open
Abstract
Background To establish effective infection control protocols, understanding pathogen transmission pathways is essential. Non-infectious surrogate tracers may safely explore these pathways and challenge pre-existing assumptions. We used silica nanoparticles with encapsulated DNA (SPED) for the first time in a real-life hospital setting to investigate potential transmission routes of vancomycin-resistant enterococci in the context of a prolonged outbreak. Methods The two study experiments took place in the 900-bed University Hospital Zurich, Switzerland. A three-run ‘Patient experiment’ investigated pathogen transmission via toilet seats in a two-patient room with shared bathroom. First, various predetermined body and fomite sites in a two-bed patient room were probed at baseline. Then, after the first patient was contaminated with SPED at the subgluteal region, both patients sequentially performed a toilet routine. All sites were consequently swabbed again for SPED contamination. Eight hours later, further spread was tested at predefined sites in the patient room and throughout the ward. A two-run ‘Mobile device experiment’ explored the potential transmission by mobile phones and stethoscopes in a quasi-realistic setting. All SPED contamination statuses and levels were determined by real-time qPCR. Results Over all three runs, the ‘Patient experiment’ yielded SPED in 59 of 73 (80.8%) predefined body and environmental sites. Specifically, positivity rates were 100% on subgluteal skin, toilet seats, tap handles, and entertainment devices, the initially contaminated patients’ hands; 83.3% on patient phones and bed controls; 80% on intravenous pumps; 75% on toilet flush plates and door handles, and 0% on the initially not contaminated patients’ hands. SPED spread as far as doctor’s keyboards (66.6%), staff mobile phones (33.3%) and nurses’ keyboards (33.3%) after eight hours. The ‘Mobile device experiment’ resulted in 16 of 22 (72.7%) positive follow-up samples, and transmission to the second patient occurred in one of the two runs. Conclusions For the first time SPED were used to investigate potential transmission pathways in a real hospital setting. The results suggest that, in the absence of targeted cleaning, toilet seats and mobile devices may result in widespread transmission of pathogens departing from one contaminated patient skin region.
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Can alternative anatomical sites and environmental surveillance replace perianal screening for multidrug-resistant organisms in nursing homes? Infect Control Hosp Epidemiol 2022; 43:1063-1066. [PMID: 34016196 PMCID: PMC9190292 DOI: 10.1017/ice.2021.134] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
Perianal screening can be intrusive. The sensitivities of multianatomical, nonperianal surveillance were 92.3% for methicillin-resistant Staphylococcus aureus (MRSA), 58.7% for vancomycin-resistant enterococci (VRE), and 54.9% for resistant Gram-negative bacilli (R-GNB). Sensitivities improved upon adding environmental surveillance (95.5%, 82.9%, and 67.9%, respectively). Multianatomical, nonperianal screening and room environment surveillance may replace perianal screening and reduce healthy participant bias in nursing homes.
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Multidrug-resistant organism (MDRO) contamination of privacy curtains in nursing homes. Infect Control Hosp Epidemiol 2022; 43:666-668. [PMID: 34053470 PMCID: PMC9045556 DOI: 10.1017/ice.2021.60] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
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Gontjes KJ, Gibson KE, Lansing BJ, Mantey J, Jones KM, Cassone M, Wang J, Mills JP, Mody L, Patel PK. Association of Exposure to High-risk Antibiotics in Acute Care Hospitals With Multidrug-Resistant Organism Burden in Nursing Homes. JAMA Netw Open 2022; 5:e2144959. [PMID: 35103795 PMCID: PMC8808331 DOI: 10.1001/jamanetworkopen.2021.44959] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/06/2023] Open
Abstract
IMPORTANCE Little is known about the contribution of hospital antibiotic prescribing to multidrug-resistant organism (MDRO) burden in nursing homes (NHs). OBJECTIVES To characterize antibiotic exposures across the NH patient's health care continuum (preceding health care exposure and NH stay) and to investigate whether recent antibiotic exposure is associated with MDRO colonization and room environment contamination at NH study enrollment. DESIGN, SETTING, AND PARTICIPANTS This is a secondary analysis of a prospective cohort study (conducted from 2013-2016) that enrolled NH patients and followed them up for as long as 6 months. The study was conducted in 6 NHs in Michigan among NH patients who were enrolled within 14 days of admission. Clinical metadata abstraction, multi-anatomical site screening, and room environment surveillance for MDROs were conducted at each study visit. Data were analyzed between May 2019 and November 2021. EXPOSURES Antibiotic data were abstracted from NH electronic medical records by trained research staff and characterized by class, route, indication, location of therapy initiation, risk for Clostridioides difficile infection (C diffogenic agents), and 2019 World Health Organization Access, Watch, and Reserve (AWARE) antibiotic stewardship framework categories. MAIN OUTCOMES AND MEASURES The primary outcomes were MDRO colonization and MDRO room environment contamination at NH study enrollment, measured using standard microbiology methods. Multivariable logistic regression was used to identify whether antibiotic exposure within 60 days was associated with MDRO burden at NH study enrollment. Additionally, antibiotic exposure data were characterized using descriptive statistics. RESULTS A total of 642 patients were included (mean [SD] age, 74.7 [12.2] years; 369 [57.5%] women; 402 [62.6%] White; median [IQR] NH days to enrollment, 6.0 [3.0-7.0]). Of these, 422 (65.7%) received 1191 antibiotic exposures: 368 (57.3%) received 971 hospital-associated prescriptions, and 119 (18.5%) received 198 NH-associated prescriptions. Overall, 283 patients (44.1%) received at least 1 C diffogenic agent, and 322 (50.2%) received at least 1 high-risk WHO AWARE antibiotic (watch or reserve agent). More than half of NH patients (364 [56.7%]) and room environments (437 [68.1%]) had MDRO-positive results at enrollment. In multivariable analysis, recent antibiotic exposure was positively associated with baseline MDRO colonization (odds ratio [OR], 1.70; 95% CI, 1.22-2.38) and MDRO environmental contamination (OR, 1.67; 95% CI, 1.17-2.39). Exploratory stratification by C diffogenic agent exposure increased the effect size (MDRO colonization: OR, 1.99; 95% CI, 1.33-2.96; MDRO environmental contamination: OR, 1.86; 95% CI, 1.24-2.79). Likewise, exploratory stratification by exposure to high-risk WHO AWARE antibiotics increased the effect size (MDRO colonization: OR, 2.32; 95% CI, 1.61-3.36; MDRO environmental contamination: OR, 1.86; 95% CI, 1.26-2.75). CONCLUSIONS AND RELEVANCE The findings of this study suggest that high-risk, hospital-based antibiotics are a potentially high-value target to reduce MDROs in postacute care NHs. This study underscores the potential utility of integrated hospital and NH stewardship programming on regional MDRO epidemiology.
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Affiliation(s)
- Kyle J. Gontjes
- Division of Geriatric & Palliative Medicine, Department of Internal Medicine, University of Michigan Medical School, Ann Arbor
- Department of Epidemiology, University of Michigan School of Public Health, Ann Arbor
- Department of Microbiology & Immunology, University of Michigan Medical School, Ann Arbor
| | - Kristen E. Gibson
- Division of Geriatric & Palliative Medicine, Department of Internal Medicine, University of Michigan Medical School, Ann Arbor
| | - Bonnie J. Lansing
- Division of Geriatric & Palliative Medicine, Department of Internal Medicine, University of Michigan Medical School, Ann Arbor
| | - Julia Mantey
- Division of Geriatric & Palliative Medicine, Department of Internal Medicine, University of Michigan Medical School, Ann Arbor
| | - Karen M. Jones
- Division of Geriatric & Palliative Medicine, Department of Internal Medicine, University of Michigan Medical School, Ann Arbor
| | - Marco Cassone
- Division of Geriatric & Palliative Medicine, Department of Internal Medicine, University of Michigan Medical School, Ann Arbor
| | - Joyce Wang
- Department of Microbiology & Immunology, University of Michigan Medical School, Ann Arbor
| | - John P. Mills
- Division of Infectious Diseases, Department of Internal Medicine, University of Michigan Medical School, Ann Arbor
| | - Lona Mody
- Division of Geriatric & Palliative Medicine, Department of Internal Medicine, University of Michigan Medical School, Ann Arbor
- Geriatrics Research Education and Clinical Center, VA Ann Arbor Healthcare System, Ann Arbor, Michigan
| | - Payal K. Patel
- Division of Infectious Diseases, Department of Internal Medicine, University of Michigan Medical School, Ann Arbor
- Division of Infectious Diseases, Department of Internal Medicine, VA Ann Arbor Healthcare System, Ann Arbor, Michigan
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Joshi S, Shallal A, Zervos M. Vancomycin-Resistant Enterococci: Epidemiology, Infection Prevention, and Control. Infect Dis Clin North Am 2021; 35:953-968. [PMID: 34752227 DOI: 10.1016/j.idc.2021.07.002] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Vancomycin-resistant enterococcus (VRE) is a pathogen of growing concern due to increasing development of antibiotic resistance, increasing length of hospitalizations and excess mortality. The utility of some infection control practices are debatable, as newer developments in infection prevention strategies continued to be discovered. This article summarizes the significance of VRE and VRE transmission, along with highlighting key changes in infection control practices within the past 5 years.
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Affiliation(s)
- Seema Joshi
- Division of Infectious Diseases, Henry Ford Hospital, CFP-3, 2799 W Grand Boulevard, Detroit, MI, USA.
| | - Anita Shallal
- Division of Infectious Diseases, Henry Ford Hospital, CFP-3, 2799 W Grand Boulevard, Detroit, MI, USA
| | - Marcus Zervos
- Wayne State University, CFP-3, 2799 W Grand Boulevard, Detroit, MI, USA
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Cassone M, Mantey J, Gontjes KJ, Lansing BJ, Gibson KE, Wang J, Mody L. Seasonal Patterns in Incidence and Antimicrobial Resistance of Common Bacterial Pathogens in Nursing Home Patients and Their Rooms. Front Public Health 2021; 9:671428. [PMID: 34322470 PMCID: PMC8311345 DOI: 10.3389/fpubh.2021.671428] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2021] [Accepted: 06/16/2021] [Indexed: 11/23/2022] Open
Abstract
Background: Colonization is the main precursor to infection, which may lead to adverse clinical outcomes among older adults in nursing homes (NHs). Understanding seasonal changes in the local burden of common bacterial pathogens is key to implementing appropriate and cost-effective infection prevention measures in this resource-constrained healthcare environment. It is thus surprising that seasonal trends in patient and environmental colonization with major bacterial pathogens are presently unknown in the expanding NH setting. Methods: We examined the seasonal incidence of four major pathogens among 640 nursing home patients and high-touch surfaces within their rooms over 2 years. In cases where a significant number of antimicrobial-resistant strains was found, incidence in antimicrobial-susceptible and antimicrobial-resistant isolates was compared, along with antibiotic use trends. Results: We observed spring peaks in the incidence of vancomycin-resistant enterococci (1.70 peak to trough ratio for both patient and environmental isolates) and methicillin-resistant Staphylococcus aureus (1.95 peak to trough ratio for patient isolates, 1.50 for environmental isolates). We also observed summer peaks in Klebsiella pneumoniae (1.83 and 1.82 peak to trough ratio for patient and environmental isolates, respectively), and ciprofloxacin-resistant Escherichia coli. Susceptible S. aureus and E. coli did not follow seasonal patterns. Conclusions: A meaningful seasonal pattern may be present in the NH setting for several significant pathogens, and especially antimicrobial-resistant ones. Whether such patterns are consistent across geographic areas and over longer periods of time should be a key focus of investigation, in order to better inform timing of surveillance and infection prevention efforts in this setting.
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Affiliation(s)
- Marco Cassone
- Division of Geriatric and Palliative Care Medicine, Department of Internal Medicine, Michigan Medicine, Ann Arbor, MI, United States
| | - Julia Mantey
- Division of Geriatric and Palliative Care Medicine, Department of Internal Medicine, Michigan Medicine, Ann Arbor, MI, United States
| | - Kyle J Gontjes
- Division of Geriatric and Palliative Care Medicine, Department of Internal Medicine, Michigan Medicine, Ann Arbor, MI, United States.,School of Public Health, University of Michigan, Ann Arbor, MI, United States
| | - Bonnie J Lansing
- Division of Geriatric and Palliative Care Medicine, Department of Internal Medicine, Michigan Medicine, Ann Arbor, MI, United States
| | - Kristen E Gibson
- Division of Geriatric and Palliative Care Medicine, Department of Internal Medicine, Michigan Medicine, Ann Arbor, MI, United States
| | - Joyce Wang
- Department of Microbiology and Immunology, Michigan Medicine, Ann Arbor, MI, United States
| | - Lona Mody
- Division of Geriatric and Palliative Care Medicine, Department of Internal Medicine, Michigan Medicine, Ann Arbor, MI, United States.,Geriatric Research and Education Clinical Center, VA Ann Arbor, Ann Arbor, MI, United States
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Cassone M, Linder M, Shin CJ, Mantey J, Gibson K, Lansing B, Mody L. Not too close! impact of roommate status on MRSA and VRE colonization and contamination in Nursing Homes. Antimicrob Resist Infect Control 2021; 10:104. [PMID: 34225783 PMCID: PMC8258944 DOI: 10.1186/s13756-021-00972-1] [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] [Received: 12/14/2020] [Accepted: 06/22/2021] [Indexed: 11/10/2022] Open
Abstract
Multiple room occupancy is common in Nursing Homes (NHs), and its role in transmission of antibiotic-resistant pathogens is unclear. We investigated prevalence of patient colonization and environmental contamination with vancomycin-resistant enterococci (VRE) and methicillin-resistant Staphylococcus aureus (MRSA) in NH roommates, compared it with expected prevalence, and determined specific body and environmental sites that may act as sources of roommate colonization. Roommate contamination was associated with index patient's colonization (relative risk (RR): 2.57 (95% CI 1.04-6.37)) for MRSA, and index patient's immediate environment contamination for VRE (RR: 3.60 (95% CI 1.59-8.12)). When specific index patient sites associated with roommate colonization were investigated, the side table (Fisher's p = 0.029 and 0.047 for VRE and MRSA, respectively) and the nurse call button (p = 0.001 and 0.052) stood out, together with patient hands in the case of VRE (p = 0.026). Future studies should be carried out to establish whether these sites should be a specific target of infection prevention campaigns in NHs with multiple occupancy rooms.
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Affiliation(s)
- Marco Cassone
- Division of Geriatric and Palliative Care Medicine, Department of Internal Medicine, University of Michigan Medical School, Ann Arbor, MI, 3023 BSRB, 109 Zina Pitcher Place48109, USA.
| | - Meghan Linder
- School of Public Health, University of Michigan, Ann Arbor, MI, USA.,Oregon Health Authority, Portland, OR, USA
| | - Cheon Jee Shin
- Division of Geriatric and Palliative Care Medicine, Department of Internal Medicine, University of Michigan Medical School, Ann Arbor, MI, 3023 BSRB, 109 Zina Pitcher Place48109, USA.,University of Louisville, Louisville, KY, USA
| | - Julia Mantey
- Division of Geriatric and Palliative Care Medicine, Department of Internal Medicine, University of Michigan Medical School, Ann Arbor, MI, 3023 BSRB, 109 Zina Pitcher Place48109, USA
| | - Kristen Gibson
- Division of Geriatric and Palliative Care Medicine, Department of Internal Medicine, University of Michigan Medical School, Ann Arbor, MI, 3023 BSRB, 109 Zina Pitcher Place48109, USA
| | - Bonnie Lansing
- Division of Geriatric and Palliative Care Medicine, Department of Internal Medicine, University of Michigan Medical School, Ann Arbor, MI, 3023 BSRB, 109 Zina Pitcher Place48109, USA
| | - Lona Mody
- Division of Geriatric and Palliative Care Medicine, Department of Internal Medicine, University of Michigan Medical School, Ann Arbor, MI, 3023 BSRB, 109 Zina Pitcher Place48109, USA.,Geriatric Research and Education Clinical Center, VA Ann Arbor, Ann Arbor, MI, USA
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13
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Mody L, Gontjes KJ, Cassone M, Gibson KE, Lansing BJ, Mantey J, Kabeto M, Galecki A, Min L. Effectiveness of a Multicomponent Intervention to Reduce Multidrug-Resistant Organisms in Nursing Homes: A Cluster Randomized Clinical Trial. JAMA Netw Open 2021; 4:e2116555. [PMID: 34269807 PMCID: PMC8285736 DOI: 10.1001/jamanetworkopen.2021.16555] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
IMPORTANCE Multidrug-resistant organisms (MDROs) can cause significant morbidity and mortality. Preventing MDROs can reduce the risk of subsequent transmission and infection. OBJECTIVE To determine whether a multicomponent infection prevention intervention can reduce MDRO prevalence in nursing homes (NHs). DESIGN, SETTING, AND PARTICIPANTS This cluster randomized clinical trial of a multicomponent intervention was conducted in 6 NHs in Michigan from September 2016 to August 2018. Three NHs adopted a multicomponent intervention, while 3 control NHs continued without investigator intervention. Study visits were conducted at baseline; days 7, 14, 21, and 30; and monthly thereafter for up to 6 months or discharge. Visits included clinical data collection and MDRO surveillance culturing of multiple body sites and high-touch surfaces in patient rooms. Any patients who provided informed consent within 14 days of admission to the NH were enrolled in this study. Non-English speakers and patients receiving hospice care were ineligible. Analysis was performed from November 2018 to February 2020. INTERVENTIONS Intervention NHs adopted a multicomponent intervention that included enhanced barrier precautions, chlorhexidine bathing, MDRO surveillance, environmental cleaning education and feedback, hand hygiene promotion, and health care worker education and feedback. Control nursing homes continued standard care practices. MAIN OUTCOMES AND MEASURES The primary outcome, presence of MDROs, was measured longitudinally in the patient and room environment and was evaluated using generalized mixed effect models. The secondary outcome, time to new MDRO acquisition, was assessed using Cox proportional hazard models. RESULTS A total of 6 NHs were included, with 245 patients (mean [SD] age, 72.5 [13.6] years; 134 [54.7%] women) enrolled; 3 NHs with 113 patients (46.1%) were randomized to the intervention group and 3 NHs with 132 patients (53.9%) were randomized to the control group. A total of 132 patients (53.9%) were White, and 235 patients (95.9%) were receiving postacute care. Over 808 study visits, 3654 patient cultures and 5606 environmental cultures were obtained. The intervention reduced the odds of MDRO prevalence in patients' environment by 43% (aOR, 0.57; 95% CI, 0.35-0.94), but there was no statistically significant difference on the patient level before or after adjustment (aOR, 0.57; 95% CI, 0.29-1.14). There were no significant reductions in time to new acquisition for methicillin-resistant Staphylococcus aureus (hazard ratio [HR], 0.20; 95% CI, 0.04-1.09), vancomycin-resistant enterococci (HR, 0.84; 95% CI, 0.46-1.53), or resistant gram-negative bacilli (HR, 1.14; 95% CI, 0.73-1.78). CONCLUSIONS AND RELEVANCE This cluster randomized clinical trial found that the multicomponent intervention reduced the prevalence of MDROs in the environment of NH patients. Our findings highlight the potential for multicomponent interventions to directly and indirectly reduce MDRO prevalence in NHs. TRIAL REGISTRATION ClinicalTrials.gov Identifier: NCT02909946.
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Affiliation(s)
- Lona Mody
- Division of Geriatric and Palliative Medicine, Department of Internal Medicine, University of Michigan Medical School, Ann Arbor
- Geriatrics Research Education and Clinical Center, Veterans Affairs Ann Arbor Healthcare System, Ann Arbor, Michigan
| | - Kyle J. Gontjes
- Division of Geriatric and Palliative Medicine, Department of Internal Medicine, University of Michigan Medical School, Ann Arbor
- Department of Epidemiology, University of Michigan School of Public Health, Ann Arbor
| | - Marco Cassone
- Division of Geriatric and Palliative Medicine, Department of Internal Medicine, University of Michigan Medical School, Ann Arbor
| | - Kristen E. Gibson
- Division of Geriatric and Palliative Medicine, Department of Internal Medicine, University of Michigan Medical School, Ann Arbor
| | - Bonnie J. Lansing
- Division of Geriatric and Palliative Medicine, Department of Internal Medicine, University of Michigan Medical School, Ann Arbor
| | - Julia Mantey
- Division of Geriatric and Palliative Medicine, Department of Internal Medicine, University of Michigan Medical School, Ann Arbor
| | - Mohammed Kabeto
- Division of Geriatric and Palliative Medicine, Department of Internal Medicine, University of Michigan Medical School, Ann Arbor
| | - Andrzej Galecki
- Division of Geriatric and Palliative Medicine, Department of Internal Medicine, University of Michigan Medical School, Ann Arbor
- Department of Biostatistics, University of Michigan School of Public Health, Ann Arbor
| | - Lillian Min
- Division of Geriatric and Palliative Medicine, Department of Internal Medicine, University of Michigan Medical School, Ann Arbor
- Geriatrics Research Education and Clinical Center, Veterans Affairs Ann Arbor Healthcare System, Ann Arbor, Michigan
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14
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Wang Y, Oppong TB, Liang X, Duan G, Yang H. Methicillin-resistant Staphylococcus aureus and vancomycin-resistant Enterococci co-colonization in patients: A meta-analysis. Am J Infect Control 2020; 48:925-932. [PMID: 31864808 DOI: 10.1016/j.ajic.2019.11.010] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2019] [Revised: 11/13/2019] [Accepted: 11/14/2019] [Indexed: 12/27/2022]
Abstract
BACKGROUND Co-colonization of methicillin-resistant Staphylococcus aureus (MRSA) and vancomycin-resistant Enterococci (VRE) may result in the transfer of drug-resistant genes. The aim of this meta-analysis was to estimate the pooled co-colonization prevalence of MRSA and VRE. METHODS We searched PubMed, Embase, and Web of Science databases. The co-colonization prevalence of MRSA and VRE was assessed by calculating the proportion and 95% confidence intervals (CI). The random-effects model was used to calculate the pooled prevalence. RESULTS Eleven eligible studies were included in this meta-analysis. The pooled co-colonization prevalence of MRSA and VRE in patients was 7% (95% CI, 5.0%-9.0%). The results of regression analysis showed that co-colonization prevalence of MRSA and VRE was related to study design, setting, screening sites, and detection methods. We found that male patients (odds ratio [OR], 1.58; 95% CI, 1.09-2.28), patients with comorbid conditions such as diabetes mellitus (OR, 1.37; 95% CI, 1.05-1.78), chronic obstructive pulmonary disease (OR, 1.88; 95% CI, 1.27-2.79), and use of indwelling devices (OR, 4.08; 95% CI, 2.21-7.53) were risk factors for co-colonization by MRSA and VRE. CONCLUSIONS The co-colonization prevalence of MRSA and VRE in the patients was common. Appropriate measures should be adopted to limit the horizontal transmission of MRSA and VRE to minimize the future potential for co-colonization and the transfer of resistance genes among these pathogens.
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Pilmis B, Billard-Pomares T, Martin M, Clarempuy C, Lemezo C, Saint-Marc C, Bourlon N, Seytre D, Carbonnelle E, Zahar JR. Can environmental contamination be explained by particular traits associated with patients? J Hosp Infect 2019; 104:293-297. [PMID: 31870885 DOI: 10.1016/j.jhin.2019.12.011] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2019] [Accepted: 12/12/2019] [Indexed: 12/12/2022]
Abstract
BACKGROUND Little is known about patient risk factors associated with environmental contamination. AIM To evaluate the rate of environmental contamination and to investigate individual risk factors. METHODS A prospective cohort study was conducted. Each day, five rooms occupied by patients were selected. Five critical surfaces were systematically swabbed twice a day before and after cleaning. Clinical characteristics of all patients were collected. Logisitic regression was performed to evaluate the association between environmental contamination and patients' characteristics. FINDINGS A total of 107 consecutive patients were included and 1052 environmental samples were performed. Nineteen (18%) patients were known previously colonized/infected with a multidrug-resistant organism (MDRO). Respectively, 723 (69%) and 112 (11%) samples grew with ≥1 and >2.5 cfu/cm2 bacteria, resulting in 62 (58%) contaminated rooms. Considering positive samples with at least one pathogenic bacterium, 16 (15%) rooms were contaminated. By univariate and multivariate analysis, no variables analysed were associated with the environmental contamination. Considering contaminated rooms with >2.5 cfu/cm2, three factors were protective for environmental contamination: known MDRO carriers/infected patients (odds ratio: 0.25; 95% confidence interval: 0.09-0.72; P = 0.01), patients with urinary catheter (0.19; 0.04-0.89; P = 0.03) and hospitalization in single room (0.3; 0.15-0.6; P < 0.001). CONCLUSION This study was conducted in a non-outbreak situation and showed a low rate of environmental contamination with pathogenic bacteria. Only 11% of environmental samples grew with >2.5 cfu/cm2, and they were related to non-pathogenic bacteria. No risk factors associated with environmental contamination were identified.
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Affiliation(s)
- B Pilmis
- Equipe Mobile de Microbiologie Clinique, Groupe Hospitalier Paris Saint Joseph, Paris, France; EA4043 Unité Bactéries Pathogènes et Santé, Université Paris-Sud Paris-Saclay, Chatenay-Malabry, France
| | - T Billard-Pomares
- IAME, UMR 1137, Université Paris 13, Sorbonne Paris Cité, France; Service de Microbiologie Clinique et Unité de Contrôle et de Prévention du Risque Infectieux, Groupe Hospitalier Paris Seine Saint-Denis, AP-HP, Bobigny, France
| | - M Martin
- Service de Microbiologie Clinique et Unité de Contrôle et de Prévention du Risque Infectieux, Groupe Hospitalier Paris Seine Saint-Denis, AP-HP, Bobigny, France
| | - C Clarempuy
- Service de Microbiologie Clinique et Unité de Contrôle et de Prévention du Risque Infectieux, Groupe Hospitalier Paris Seine Saint-Denis, AP-HP, Bobigny, France
| | - C Lemezo
- Service de Microbiologie Clinique et Unité de Contrôle et de Prévention du Risque Infectieux, Groupe Hospitalier Paris Seine Saint-Denis, AP-HP, Bobigny, France
| | - C Saint-Marc
- Service de Microbiologie Clinique et Unité de Contrôle et de Prévention du Risque Infectieux, Groupe Hospitalier Paris Seine Saint-Denis, AP-HP, Bobigny, France
| | - N Bourlon
- Service de Microbiologie Clinique et Unité de Contrôle et de Prévention du Risque Infectieux, Groupe Hospitalier Paris Seine Saint-Denis, AP-HP, Bobigny, France
| | - D Seytre
- Service de Microbiologie Clinique et Unité de Contrôle et de Prévention du Risque Infectieux, Groupe Hospitalier Paris Seine Saint-Denis, AP-HP, Bobigny, France
| | - E Carbonnelle
- IAME, UMR 1137, Université Paris 13, Sorbonne Paris Cité, France; Service de Microbiologie Clinique et Unité de Contrôle et de Prévention du Risque Infectieux, Groupe Hospitalier Paris Seine Saint-Denis, AP-HP, Bobigny, France
| | - J-R Zahar
- IAME, UMR 1137, Université Paris 13, Sorbonne Paris Cité, France; Service de Microbiologie Clinique et Unité de Contrôle et de Prévention du Risque Infectieux, Groupe Hospitalier Paris Seine Saint-Denis, AP-HP, Bobigny, France.
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16
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Gontjes KJ, Gibson KE, Lansing B, Cassone M, Mody L. Contamination of Common Area and Rehabilitation Gym Environment with Multidrug‐Resistant Organisms. J Am Geriatr Soc 2019; 68:478-485. [DOI: 10.1111/jgs.16284] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2019] [Revised: 09/30/2019] [Accepted: 10/07/2019] [Indexed: 01/05/2023]
Affiliation(s)
- Kyle J. Gontjes
- Division of Geriatric and Palliative MedicineUniversity of Michigan Medical School Ann Arbor Michigan
- Department of EpidemiologyUniversity of Michigan School of Public Health Ann Arbor Michigan
| | - Kristen E. Gibson
- Division of Geriatric and Palliative MedicineUniversity of Michigan Medical School Ann Arbor Michigan
| | - Bonnie Lansing
- Division of Geriatric and Palliative MedicineUniversity of Michigan Medical School Ann Arbor Michigan
| | - Marco Cassone
- Division of Geriatric and Palliative MedicineUniversity of Michigan Medical School Ann Arbor Michigan
| | - Lona Mody
- Division of Geriatric and Palliative MedicineUniversity of Michigan Medical School Ann Arbor Michigan
- Geriatrics Research, Education and Clinical CenterVeterans Affairs Ann Arbor Healthcare System Ann Arbor Michigan
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Cassone M, Zhu Z, Mantey J, Gibson KE, Perri MB, Zervos MJ, Snitkin ES, Foxman B, Mody L. Interplay Between Patient Colonization and Environmental Contamination With Vancomycin-Resistant Enterococci and Their Association With Patient Health Outcomes in Postacute Care. Open Forum Infect Dis 2019; 7:ofz519. [PMID: 31988973 PMCID: PMC6976341 DOI: 10.1093/ofid/ofz519] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2019] [Accepted: 12/05/2019] [Indexed: 11/17/2022] Open
Abstract
Background The clinical utility of patient and environmental surveillance screening for vancomycin-resistant enterococci (VRE) in the postacute care setting has not been definitively clarified. We assessed the longitudinal relationship between patient colonization and room contamination, and we established their association with unfavorable health outcomes. Methods Four hundred sixty-three postacute care patients were followed longitudinally from enrollment to discharge for up to 6 months. Multiple body and environmental sites were sampled at regular intervals to establish correlation between environmental contamination and patient colonization and with longer than expected stay, unplanned hospitalization, and infections adjusting for sex, age, race, Charlson’s comorbidity index, and physical self-maintenance score. Results New VRE acquisition was more likely in patients residing in contaminated rooms (multivariable odds ratio [OR] = 3.75; 95% confidence interval [CI], 1.98–7.11) and vice versa (OR = 3.99; 95% CI, 2.16–7.51). New acquisition and new contamination were associated with increased length of stay (OR = 4.36, 95% CI = 1.86–10.2 and OR = 4.61, 95% CI = 1.92–11.0, respectively) and hospitalization (OR = 2.42, 95% CI = 1.39–4.22 and OR = 2.80, 95% CI = 1.52–5.12). New-onset infections were more common with higher VRE burdens (15% in the absence of VRE, 20% when after VRE isolation only on the patient or only in the room, and 29% after VRE isolation in both the patient and the room). Conclusions Room contamination with VRE is a risk factor for patient colonization, and both are associated with future adverse health outcomes in our postacute care patients. Further research is warranted to establish whether VRE screening may contribute to better understanding of risk assessment and adverse outcome prevention in postacute care.
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Affiliation(s)
- Marco Cassone
- Division of Geriatrics and Palliative Care Medicine, University of Michigan Medical School, Ann Arbor, Michigan, USA
| | - Ziwei Zhu
- University of Michigan School of Public Health, Ann Arbor, Michigan, USA
| | - Julia Mantey
- Division of Geriatrics and Palliative Care Medicine, University of Michigan Medical School, Ann Arbor, Michigan, USA
| | - Kristen E Gibson
- Division of Geriatrics and Palliative Care Medicine, University of Michigan Medical School, Ann Arbor, Michigan, USA
| | - Mary B Perri
- Henry Ford Health System, Detroit, Michigan, USA
| | | | - Evan S Snitkin
- Department of Microbiology and Immunology, University of Michigan Medical School, Ann Arbor, Michigan, USA
| | - Betsy Foxman
- University of Michigan School of Public Health, Ann Arbor, Michigan, USA.,Division of Geriatrics and Palliative Care Medicine, University of Michigan Medical School, Ann Arbor, Michigan, USA
| | - Lona Mody
- Division of Geriatrics and Palliative Care Medicine, University of Michigan Medical School, Ann Arbor, Michigan, USA.,Geriatric Research Education and Clinical Center, VA Ann Arbor Healthcare System, Ann Arbor, Michigan, USA
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18
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Mody L, Washer LL, Kaye KS, Gibson K, Saint S, Reyes K, Cassone M, Mantey J, Cao J, Altamimi S, Perri M, Sax H, Chopra V, Zervos M. Multidrug-resistant Organisms in Hospitals: What Is on Patient Hands and in Their Rooms? Clin Infect Dis 2019; 69:1837-1844. [PMID: 30980082 PMCID: PMC6853699 DOI: 10.1093/cid/ciz092] [Citation(s) in RCA: 41] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2018] [Indexed: 01/23/2023] Open
Abstract
BACKGROUND The impact of healthcare personnel hand contamination in multidrug-resistant organism (MDRO) transmission is important and well studied; however, the role of patient hand contamination needs to be characterized further. METHODS Patients from 2 hospitals in southeast Michigan were recruited within 24 hours of arrival to their room and followed prospectively using microbial surveillance of nares, dominant hand, and 6 high-touch environmental surfaces. Sampling was performed on admission, days 3 and 7, and weekly until discharge. Paired samples of methicillin-resistant Staphylococcus aureus (MRSA) isolated from the patients' hand and room surfaces were evaluated for relatedness using pulsed-field gel electrophoresis and staphylococcal cassette chromosome mec, and Panton-Valentine leukocidin typing. RESULTS A total of 399 patients (mean age, 60.8 years; 49% male) were enrolled and followed for 710 visits. Fourteen percent (n = 56/399) of patients were colonized with an MDRO at baseline; 10% (40/399) had an MDRO on their hands. Twenty-nine percent of rooms harbored an MDRO. Six percent (14/225 patients with at least 2 visits) newly acquired an MDRO on their hands during their stay. New MDRO acquisition in patients occurred at a rate of 24.6/1000 patient-days, and in rooms at a rate of 58.6/1000 patient-days. Typing demonstrated a high correlation between MRSA on patient hands and room surfaces. CONCLUSIONS Our data suggest that patient hand contamination with MDROs is common and correlates with contamination on high-touch room surfaces. Patient hand hygiene protocols should be considered to reduce transmission of pathogens and healthcare-associated infections.
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Affiliation(s)
- Lona Mody
- Department of Internal Medicine, Division of Geriatric and Palliative Medicine, University of Michigan Medical School, Detroit, Michigan
- Geriatrics Research Education and Clinical Center, Veterans Affairs Ann Arbor Healthcare System, Detroit, Michigan
| | - Laraine L Washer
- Department of Infection Prevention and Epidemiology, Michigan Medicine, Detroit, Michigan
- Department of Internal Medicine, Division of Infectious Diseases, University of Michigan Health System, Detroit, Michigan
| | - Keith S Kaye
- Department of Internal Medicine, Division of Infectious Diseases, University of Michigan Health System, Detroit, Michigan
| | - Kristen Gibson
- Department of Internal Medicine, Division of Geriatric and Palliative Medicine, University of Michigan Medical School, Detroit, Michigan
| | - Sanjay Saint
- Patient Safety Enhancement Program and Center for Clinical Management Research, Veterans Affairs Ann Arbor Healthcare System, Detroit, Michigan
- Division of Hospital Medicine, Department of Medicine, University of Michigan Health System, Ann Arbor, Detroit, Michigan
| | - Katherine Reyes
- Division of Infectious Diseases, Henry Ford Health System, Detroit, Michigan
| | - Marco Cassone
- Department of Internal Medicine, Division of Geriatric and Palliative Medicine, University of Michigan Medical School, Detroit, Michigan
| | - Julia Mantey
- Department of Internal Medicine, Division of Geriatric and Palliative Medicine, University of Michigan Medical School, Detroit, Michigan
| | - Jie Cao
- Department of Internal Medicine, Division of Geriatric and Palliative Medicine, University of Michigan Medical School, Detroit, Michigan
| | - Sarah Altamimi
- Division of Infectious Diseases, Henry Ford Health System, Detroit, Michigan
| | - Mary Perri
- Division of Infectious Diseases, Henry Ford Health System, Detroit, Michigan
| | - Hugo Sax
- Division of Infectious Diseases and Hospital Epidemiology, University Hospital Zurich, University of Zurich, Switzerland
| | - Vineet Chopra
- Patient Safety Enhancement Program and Center for Clinical Management Research, Veterans Affairs Ann Arbor Healthcare System, Detroit, Michigan
- Division of Hospital Medicine, Department of Medicine, University of Michigan Health System, Ann Arbor, Detroit, Michigan
| | - Marcus Zervos
- Division of Infectious Diseases, Henry Ford Health System, Detroit, Michigan
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The devil is in the details: Factors influencing hand hygiene adherence and contamination with antibiotic-resistant organisms among healthcare providers in nursing facilities. Infect Control Hosp Epidemiol 2019; 40:1394-1399. [PMID: 31647042 DOI: 10.1017/ice.2019.292] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
BACKGROUND Antibiotic-resistant organism (ARO) colonization rates in skilled nursing facilities (NFs) are high; hand hygiene is crucial to interrupt transmission. We aimed to determine factors associated with hand hygiene adherence in NFs and to assess rates of ARO acquisition among healthcare personnel (HCP). METHODS HCP were observed during routine care at 6 NFs. We recorded hand hygiene adherence, glove use, activities, and time in room. HCP hands were cultured before and after patient care; patients and high-touch surfaces were cultured. HCP activities were categorized as high-versus low-risk for self-contamination. Multivariable regression was performed to identify predictors of hand hygiene adherence. RESULTS We recorded 385 HCP observations and paired them with cultures performed before and after patient care. Hand hygiene adherence occurred in 96 of 352 observations (27.3%) before patient care and 165 of 358 observations (46.1%) after patient care. Gloves were worn in 169 of 376 observations (44.9%). Higher adherence was associated with glove use before patient care (odds ratio [OR], 2.55; 95% confidence interval [CI], 1.44-4.54) and after patient care (OR, 3.11; 95% CI, 1.77-5.48). Compared with nurses, certified nurse assistants had lower hand hygiene adherence (OR, 0.31; 95% CI, 0.15-0.67) before patient care and physical/occupational therapists (OR, 0.22; 95% CI, 0.11-0.44) after patient care. Hand hygiene varied by activity performed and time in the room. HCP hands were contaminated with AROs in 35 of 385 cultures of hands before patient care (0.9%) and 22 of 350 cultures of hands after patient care (6.3%). CONCLUSIONS Hand hygiene adherence in NFs remain low; it is influenced by job title, type of care activity, and glove use. Hand hygiene programs should incorporate these unique care and staffing factors to reduce ARO transmission.
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20
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Heinze K, Kabeto M, Martin ET, Cassone M, Hicks L, Mody L. Predictors of methicillin-resistant Staphylococcus aureus and vancomycin-resistant enterococci co-colonization among nursing facility patients. Am J Infect Control 2019; 47:415-420. [PMID: 30502107 DOI: 10.1016/j.ajic.2018.09.026] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2018] [Revised: 09/21/2018] [Accepted: 09/22/2018] [Indexed: 12/18/2022]
Abstract
BACKGROUND The emergence of vancomycin-resistant Staphylococcus aureus (VRSA) poses significant challenges for antibiotic therapy. We characterized the epidemiology of methicillin-resistant Staphylococcus aureus (MRSA) and vancomycin-resistant enterococci (VRE) co-colonization that may facilitate resistance transfer and vancomycin-resistant S aureus emergence among nursing facility patients. METHODS We cultured newly admitted patient hands, nares, oropharynx, groin, and perianal region plus wounds and device insertion sites, if applicable, upon enrollment at day 14, day 30, and monthly follow-up up to 6 months. Demographic, comorbidity, and antimicrobial use data were collected. Functional status was assessed at each visit using the Physical Self-Maintenance Scale. Multinomial logistic regression was performed to determine factors predictive of co-colonization. RESULTS Five hundred eight patients were enrolled, with an average follow-up time of 28.5days. Prevalence of MRSA/VRE co-colonization, MRSA alone, and VRE alone was 8.7%, 8.9%, and 23.4%, respectively. Independent predictors of co-colonization included indwelling device use (odds ratio [OR] = 5.5 [2.2-13.7]), recent antibiotic use (OR = 2.5 [1.4-4.2]), diabetes (OR = 1.9 [1.0-3.8]), and the presence of open wounds (OR = 1.9 [1.0-3.6]). CONCLUSIONS High rates of VRE are driving co-colonization with MRSA in nursing facilities. Indwelling device use, recent antibiotic use, diabetes, and open wounds predicted patient co-colonization.
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