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Sood G, Perl TM. Outbreaks in Health Care Settings. Infect Dis Clin North Am 2021; 35:631-666. [PMID: 34362537 DOI: 10.1016/j.idc.2021.04.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
Outbreaks and pseudo-outbreaks in health care settings are complex and should be evaluated systematically using epidemiologic and molecular tools. Outbreaks result from failures of infection prevention practices, inadequate staffing, and undertrained or overcommitted health care personnel. Contaminated hands, equipment, supplies, water, ventilation systems, and environment may also contribute. Neonatal intensive care, endoscopy, oncology, and transplant units are areas at particular risk. Procedures, such as bronchoscopy and endoscopy, are sources of infection when cleaning and disinfection processes are inadequate. New types of equipment can be introduced and lead to contamination or equipment and medications can be contaminated at the manufacturing source.
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Affiliation(s)
- Geeta Sood
- Division of Infectious Diseases, Johns Hopkins University School of Medicine, Johns Hopkins Bayview Medical Center, Mason F. Lord Building, Center Tower, 3rd Floor, 5200 Eastern Avenue, Baltimore, MD 21224, USA.
| | - Trish M Perl
- Division of Infectious Diseases and Geographic Medicine, UT Southwestern Medical Center, 5323 Harry Hines Boulevard, Y7;302, Dallas, TX 75390, USA
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A systematic review of the effectiveness of cohorting to reduce transmission of healthcare-associated C. difficile and multidrug-resistant organisms. Infect Control Hosp Epidemiol 2021; 41:691-709. [PMID: 32216852 DOI: 10.1017/ice.2020.45] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
BACKGROUND Cohorting of patients and staff is a control strategy often used to prevent the spread of infection in healthcare institutions. However, a comprehensive evaluation of cohorting as a prevention approach is lacking. METHODS We performed a systematic review of studies that used cohorting as part of an infection control strategy to reduce hospital-acquired infections. We included studies published between 1966 and November 30, 2019, on adult populations hospitalized in acute-care hospitals. RESULTS In total, 87 studies met inclusion criteria. Study types were quasi-experimental "before and after" (n = 35), retrospective (n = 49), and prospective (n = 3). Case-control analysis was performed in 7 studies. Cohorting was performed with other infection control strategies in the setting of methicillin-resistant Staphylococcus aureus (MRSA, n = 22), Clostridioides difficile infection (CDI, n = 6), vancomycin-resistant Enterococcus (VRE, n = 17), carbapenem-resistant Enterobacteriaceae infections (CRE, n = 22), A. baumannii (n = 15), and other gram-negative infections (n = 5). Cohorting was performed either simultaneously (56 of 87, 64.4%) or in phases (31 of 87, 35.6%) to help contain transmission. In 60 studies, both patients and staff were cohorted. Most studies (77 of 87, 88.5%) showed a decline in infection or colonization rates after a multifaceted approach that included cohorting as part of the intervention bundle. Hand hygiene compliance improved in approximately half of the studies (8 of 15) during the respective intervention. CONCLUSION Cohorting of staff, patients, or both is a frequently used and reasonable component of an enhanced infection control strategy. However, determining the effectiveness of cohorting as a strategy to reduce transmission of MDRO and C. difficile infections is difficult, particularly in endemic situations.
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Mawdsley S. What are acute NHS trusts in England doing to prevent the cross-border spread of carbapenem-resistant Enterobacteriaceae? J Infect Prev 2020; 21:196-201. [PMID: 33193822 DOI: 10.1177/1757177420935633] [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: 01/03/2019] [Accepted: 04/15/2020] [Indexed: 11/16/2022] Open
Abstract
Background Carbapenem-resistant Enterobacteriaceae (CRE) pose a significant threat to global public health as these organisms have the potential to cause infections which are easily spread and are associated with high mortality rates. Aim/Objective The aim of this study was to establish which screening strategies acute NHS trusts in England have chosen to adopt and whether or not that strategy has prevented or is likely to prevent the cross-border spread of CRE. Methods All acute NHS trusts in England were invited to participate in a multicentre quantitative study. Participants were asked to complete a questionnaire relating to their local CRE screening protocol. Findings/Results Of the 91 participating trusts, 83 (91.2%) adhere to Public Health England (2013) guidance. However, only 22 (24.2%) trusts have adopted the European Centre for Disease Prevention and Control (2016) recommendations. In total, 31 (34.1%) trusts reported incidences of person-to-person transmission, of which 45.2% were related to foreign travel. Furthermore, 31 (34.1%) trusts reported that patients who have had an admission to a hospital in the UK not known to have a high prevalence of healthcare-associated CRE in the last 12 months had screened positive. Discussion This study has demonstrated that inter-hospital transmission is as much of a concern as cross-border spread. Mandatory participation in enhanced surveillance could provide PHE with the epidemiological evidence required to support this stance and help to develop new national guidance.
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Affiliation(s)
- Sharon Mawdsley
- Blackpool Teaching Hospitals NHS Foundation Trust, Blackpool, UK
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Tchouaket Nguemeleu E, Boivin S, Robins S, Sia D, Kilpatrick K, Brousseau S, Dubreuil B, Larouche C, Parisien N. Development and validation of a time and motion guide to assess the costs of prevention and control interventions for nosocomial infections: A Delphi method among experts. PLoS One 2020; 15:e0242212. [PMID: 33180833 PMCID: PMC7660509 DOI: 10.1371/journal.pone.0242212] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2020] [Accepted: 10/28/2020] [Indexed: 12/21/2022] Open
Abstract
BACKGROUND Nosocomial infections place a heavy burden on patients and healthcare providers and impact health care institutions financially. Reducing nosocomial infections requires an integrated program of prevention and control using key clinical best care practices. No instrument currently exists that measures these practices in terms of personnel time and material costs. OBJECTIVE To develop and validate an instrument that would measure nosocomial infection control and prevention best care practice costs, including estimates of human and material resources. METHODS An evaluation of the literature identified four practices essential for the control of pathogens: hand hygiene, hygiene and sanitation, screening and additional precaution. To reflect time, materials and products used in these practices, our team developed a time and motion guide. Iterations of the guide were assessed in a Delphi technique; content validity was established using the content validity index and reliability was assessed using Kruskall Wallis one-way ANOVA of rank test. RESULTS Two rounds of Delphi review were required; 88% of invited experts completed the assessment. The final version of the guide contains eight dimensions: Identification [83 items]; Personnel [5 items]; Additional Precautions [1 item]; Hand Hygiene [2 items]; Personal Protective Equipment [14 items]; Screening [4 items]; Cleaning and Disinfection of Patient Care Equipment [33 items]; and Hygiene and Sanitation [24 items]. The content validity index obtained for all dimensions was acceptable (> 80%). Experts statistically agreed on six of the eight dimensions. DISCUSSION/CONCLUSION This study developed and validated a new instrument based on expert opinion, the time and motion guide, for the systematic assessment of costs relating to the human and material resources used in nosocomial infection prevention and control. This guide will prove useful to measure the intensity of the application of prevention and control measures taken before, during and after outbreak periods or during pandemics such as COVID-19.
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Affiliation(s)
| | - Sandra Boivin
- Centre Intégré de Santé et de Services de Sociaux des Laurentides, Direction de la Santé Publique, Saint-Jérôme, Québec, Canada
| | - Stephanie Robins
- Université du Québec en Outaouais, Department of Nursing Research, Saint-Jérôme, QC, Canada
| | - Drissa Sia
- Université du Québec en Outaouais, Department of Nursing Research, Saint-Jérôme, QC, Canada
| | - Kelley Kilpatrick
- Ingram School of Nursing, McGill University, Montréal, Québec, Canada
| | - Sylvain Brousseau
- Université du Québec en Outaouais, Department of Nursing Research, Saint-Jérôme, QC, Canada
| | - Bruno Dubreuil
- Institut de Cardiologie, Montreal Heart Institute, Montréal, Québec, Canada
| | - Catherine Larouche
- Centre Intégré Universitaire de Santé et de Services Sociaux du Saguenay, Lac-Saint-Jean, Québec, Canada
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High mortality in an outbreak of multidrug resistant Acinetobacter baumannii infection introduced to an oncological hospital by a patient transferred from a general hospital. PLoS One 2020; 15:e0234684. [PMID: 32702006 PMCID: PMC7377454 DOI: 10.1371/journal.pone.0234684] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2019] [Accepted: 06/01/2020] [Indexed: 02/08/2023] Open
Abstract
OBJECTIVE To describe the clinical features, outcomes, and molecular epidemiology of an outbreak of multidrug resistant (MDR) A. baumannii. METHODS We performed a retrospective analysis of all MDR A. baumannii isolates recovered during an outbreak from 2011 to 2015 in a tertiary care cancer hospital. Cases were classified as colonized or infected. We determined sequence types following the Bartual scheme and plasmid profiles. RESULTS There were 106 strains of A. baumannii isolated during the study period. Sixty-six (62.3%) were considered as infection and 40 (37.7%) as colonization. The index case, identified by molecular epidemiology, was a patient with a drain transferred from a hospital outside Mexico City. Ninety-eight additional cases had the same MultiLocus Sequence Typing (MLST) 758, of which 94 also had the same plasmid profile, two had an extra plasmid, and two had a different plasmid. The remaining seven isolates belonged to different MLSTs. Fifty-three patients (50%) died within 30 days of A. baumanniii isolation: 28 (20%) in colonized and 45 (68.2%) in those classified as infection (p<0.001). In multivariate regression analysis, clinical infection and patients with hematologic neoplasm, predicted 30-day mortality. The molecular epidemiology of this outbreak showed the threat posed by the introduction of MDR strains from other institutions in a hospital of immunosuppressed patients and highlights the importance of adhering to preventive measures, including contact isolation, when admitting patients with draining wounds who have been hospitalized in other institutions.
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Saïdani N, Lagier JC, Cassir N, Million M, Baron S, Dubourg G, Eldin C, Kerbaj J, Valles C, Raoult D, Brouqui P. Faecal microbiota transplantation shortens the colonisation period and allows re-entry of patients carrying carbapenamase-producing bacteria into medical care facilities. Int J Antimicrob Agents 2018; 53:355-361. [PMID: 30472293 DOI: 10.1016/j.ijantimicag.2018.11.014] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2018] [Revised: 11/02/2018] [Accepted: 11/17/2018] [Indexed: 12/17/2022]
Abstract
BACKGROUND Colonisation with carbapenemase-producing Enterobacteriaceae or Acinetobacter (CPE/A) is associated with complex medical care requiring implementation of specific isolation policies and limitation of patient discharge to other medical facilities. Faecal microbiota transplantation (FMT) has been proposed in order to reduce the duration of gut colonisation. OBJECTIVES This study investigated whether a dedicated protocol of FMT could reduce the negativation time of CPE/A intestinal carriage in patients whose medical care has been delayed due to such colonisation. METHOD A matched case-control retrospective study between patients who received FMT treatment and those who did not among CPE/A-colonised patients addressed for initial clustering at the current institute. The study adjusted two controls per case based on sex, age, bacterial species, and carbapenemase type. The primary outcome was delay in negativation of rectal-swab cultures. RESULTS At day 14 post FMT, 8/10 (80%) treated patients were cleared for intestinal CPE/A carriage. In the control group, 2/20 (10%) had spontaneous clearance at day 14 after CPE/A diagnosis. Faecal microbiota transplantation led patients to reduce the delay in decolonisation (median 3 days post FMT for treated patients vs. 50.5 days after the first documentation of digestive carriage for control patients) and discharge from hospital (median 19.5 days post FMT for treated patients vs. 41 for control patients). CONCLUSION Faecal microbiota transplantation is a safe and time-saving procedure to discharge CPE/A-colonised patients from the hospital. A standardised protocol, including 5 days of antibiotic treatment, bowel cleansing and systematic indwelling devices removal, should improve protocol effectiveness.
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Affiliation(s)
- Nadia Saïdani
- AP-HM, IHU-Méditerranée Infection, Marseille, France
| | - Jean-Christophe Lagier
- AP-HM, IHU-Méditerranée Infection, Marseille, France; Aix Marseille Université, IRD, IHU-Méditerranée Infection, MEPHI, Marseille, France.
| | - Nadim Cassir
- AP-HM, IHU-Méditerranée Infection, Marseille, France
| | - Matthieu Million
- AP-HM, IHU-Méditerranée Infection, Marseille, France; Aix Marseille Université, IRD, IHU-Méditerranée Infection, MEPHI, Marseille, France
| | - Sophie Baron
- AP-HM, IHU-Méditerranée Infection, Marseille, France; Aix Marseille Université, IRD, SSA, IHU-Méditerranée Infection, VITROME, Marseille, France
| | - Grégory Dubourg
- AP-HM, IHU-Méditerranée Infection, Marseille, France; Aix Marseille Université, IRD, IHU-Méditerranée Infection, MEPHI, Marseille, France
| | - Carole Eldin
- AP-HM, IHU-Méditerranée Infection, Marseille, France; Aix Marseille Université, IRD, IHU-Méditerranée Infection, MEPHI, Marseille, France
| | - Jad Kerbaj
- AP-HM, IHU-Méditerranée Infection, Marseille, France
| | - Camille Valles
- Aix Marseille Université, IRD, IHU-Méditerranée Infection, MEPHI, Marseille, France
| | - Didier Raoult
- AP-HM, IHU-Méditerranée Infection, Marseille, France; Aix Marseille Université, IRD, IHU-Méditerranée Infection, MEPHI, Marseille, France
| | - Philippe Brouqui
- AP-HM, IHU-Méditerranée Infection, Marseille, France; Aix Marseille Université, IRD, IHU-Méditerranée Infection, MEPHI, Marseille, France
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