1
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Smith M, Herwaldt L. Nasal decolonization: What antimicrobials and antiseptics are most effective before surgery and in the ICU. Am J Infect Control 2023; 51:A64-A71. [PMID: 37890955 DOI: 10.1016/j.ajic.2023.02.004] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2023] [Accepted: 02/10/2023] [Indexed: 10/29/2023]
Abstract
BACKGROUND Staphylococcus aureus colonization is a key risk factor for S. aureus infections in surgical patients and in hospitalized patients. Many studies have assessed various decolonization agents, protocols, and settings. This review summarizes key findings about nasal decolonization for 2 different patient populations: patients undergoing surgery and patients hospitalized in intensive care units. METHODS We reviewed major studies related to decolonization of patients colonized with S. aureus and who were either undergoing surgical procedures or were hospitalized in intensive care units. We focused on recent studies, particularly randomized controlled trials and robust quasi-experimental trials. We also reviewed select non-randomized trials when more rigorous trials were limited. DISCUSSION/CONCLUSIONS Mupirocin is the best-studied agent for decolonization. Its use reduces the risk of surgical site infection following orthopedic surgery (strongest data) and cardiac surgery. Mupirocin decolonization also reduces the incidence of S. aureus clinical cultures in the intensive care unit. Povidone-iodine is less well-studied. Current data suggest that it decreases the risk of surgical site infections after orthopedic surgical procedures. In contrast, povidone-iodine is less effective than mupirocin for reducing the incidence of S aureus clinical cultures in the intensive care unit. Both mupirocin and povidone-iodine have important limitations, highlighting the need for future decolonization research.
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Affiliation(s)
- Matthew Smith
- Division of Infectious Diseases, Department of Internal Medicine, University of Iowa Carver College of Medicine, Iowa City, IA; Center for Access & Delivery Research and Evaluation (CADRE), Iowa City VA Health Care System, Iowa City, IA.
| | - Loreen Herwaldt
- Division of Infectious Diseases, Department of Internal Medicine, University of Iowa Carver College of Medicine, Iowa City, IA; Department of Epidemiology, University of Iowa College of Public Health, Iowa City, IA
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2
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Popovich KJ, Aureden K, Ham DC, Harris AD, Hessels AJ, Huang SS, Maragakis LL, Milstone AM, Moody J, Yokoe D, Calfee DP. SHEA/IDSA/APIC Practice Recommendation: Strategies to prevent methicillin-resistant Staphylococcus aureus transmission and infection in acute-care hospitals: 2022 Update. Infect Control Hosp Epidemiol 2023; 44:1039-1067. [PMID: 37381690 PMCID: PMC10369222 DOI: 10.1017/ice.2023.102] [Citation(s) in RCA: 33] [Impact Index Per Article: 33.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2023] [Accepted: 05/03/2023] [Indexed: 06/29/2023]
Abstract
Previously published guidelines have provided comprehensive recommendations for detecting and preventing healthcare-associated infections (HAIs). The intent of this document is to highlight practical recommendations in a concise format designed to assist acute-care hospitals in implementing and prioritizing efforts to prevent methicillin-resistant Staphylococcus aureus (MRSA) transmission and infection. This document updates the "Strategies to Prevent Methicillin-Resistant Staphylococcus aureus Transmission and Infection in Acute Care Hospitals" published in 2014.1 This expert guidance document is sponsored by the Society for Healthcare Epidemiology of America (SHEA). It is the product of a collaborative effort led by SHEA, the Infectious Diseases Society of America (IDSA), the Association for Professionals in Infection Control and Epidemiology (APIC), the American Hospital Association (AHA), and The Joint Commission, with major contributions from representatives of a number of organizations and societies with content expertise.
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Affiliation(s)
- Kyle J. Popovich
- Department of Internal Medicine, RUSH Medical College, Chicago, Illinois
| | - Kathy Aureden
- Infection Prevention, Advocate Aurora Health, Downers Grove, Illinois
| | - D. Cal Ham
- Centers for Disease Control and Prevention, Atlanta, Georgia
| | - Anthony D. Harris
- Health Care Outcomes Research, University of Maryland School of Medicine, Baltimore, Maryland
| | - Amanda J. Hessels
- Columbia School of Nursing, New York, New York
- Hackensack Meridian Health, Edison, New Jersey
| | - Susan S. Huang
- Division of Infectious Diseases, University of California Irvine School of Medicine, Irvine, California
| | - Lisa L. Maragakis
- Johns Hopkins University School of Medicine, The Johns Hopkins Hospital, Baltimore, Maryland
| | - Aaron M. Milstone
- Division of Pediatric Infectious Diseases, Johns Hopkins University School of Medicine, Baltimore, Maryland
| | - Julia Moody
- Infection Prevention, HCA Healthcare, Nashville, Tennessee
| | - Deborah Yokoe
- Department of Medicine, University of California San Francisco School of Medicine, San Francisco, California
- Transplant Infectious Diseases, UCSF Medical Center, San Francisco, California
| | - David P. Calfee
- Department of Medicine, Weill Cornell Medicine, New York, New York
- Department of Population Health Sciences, Weill Cornell Medicine, New York, New York
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A tale of two intensive care units (ICUs): Baseline Staphylococcus aureus colonization and mupirocin susceptibility in neonatal and pediatric patients requiring intensive care. Infect Control Hosp Epidemiol 2023; 44:447-452. [PMID: 35450544 PMCID: PMC10015265 DOI: 10.1017/ice.2022.96] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
OBJECTIVE To assess the incidence rate of S. aureus colonization at baseline along with the mupirocin susceptibility (or resistance) rate in patients in a neonatal intensive care unit (NICU) and a pediatric intensive care unit (PICU) in conjunction with the implementation of universal decolonization as the standard of care. DESIGN Prospective cohort study. SETTING Children's Hospital of Michigan (CHM) inpatient intensive care units (ICUs). PARTICIPANTS Newly admitted pediatric patients to the CHM NICU or PICU aged between 1 day and ≤21 years. INTERVENTIONS Baseline and follow-up S. aureus screening cultures were obtained before patients underwent universal decolonization with mupirocin 2% antibiotic ointment (intranasal and umbilical) and chlorhexidine baths as standard of care to reduce CLABSI rates. RESULTS Baseline S. aureus colonization rates of new admissions to the CHM NICU and PICU were high at 32% and 29%, respectively. Baseline mupirocin susceptibility to any S. aureus growth was 98.4%. All baseline culture isolates whether positive for MRSA or MSSA, with one exception, had minimum inhibitory concentrations (MICs) of ≤0.19 µg/mL. All follow-up study cultures after universal decolonization at 7 days or beyond with any S. aureus growth had mupirocin MICs of ≤0.125 µg/mL. CONCLUSIONS Baseline S. aureus colonization rates of new admissions to the CHM ICUs were high as was baseline mupirocin susceptibility. Follow-up cultures, albeit limited in number, did not detect increasing mupirocin MICs over 1 year, despite broad mupirocin exposure due to the implementation of universal decolonization.
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4
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Reducing Staphylococcus aureus infections in the neonatal intensive care unit. J Perinatol 2022; 42:1540-1545. [PMID: 35487977 DOI: 10.1038/s41372-022-01407-4] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/01/2021] [Revised: 02/07/2022] [Accepted: 04/22/2022] [Indexed: 11/08/2022]
Abstract
OBJECTIVE Our neonatal intensive care unit (NICU) saw an increase in Staphylococcus aureus (SA) infections-methicillin-resistant SA (MRSA) infections increased from 2.1/10,000 patient days (PD) to 5.1/10,000 PD, and methicillin-sensitive SA (MSSA) infections from 1.2/10,000 PD to 3.9/10,000 PD. This quality improvement project aimed to decrease the rates of SA infections to less than 2.0/10,000 PD, and to determine the rate of SA decolonization. METHODS Infection prevention interventions targeted patient factors (SA surveillance, patient cohorting, decolonization protocol), provider factors (provider cohorting, enhanced hand hygiene) and environmental factors (room structure, equipment optimization). RESULTS The rates of MRSA and MSSA infections decreased to 0.6/10,000 PD and 0.7 infections/10,000 PD respectively. Persistent decolonization of SA was successful in 67% of colonized patients. CONCLUSIONS Specific interventions targeting patient, provider, and environmental factors, including the implementation of a SA decolonization protocol, were successful in decreasing the incidence of SA infections in neonates.
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Coia JE, Wilson JA, Bak A, Marsden GL, Shimonovich M, Loveday HP, Humphreys H, Wigglesworth N, Demirjian A, Brooks J, Butcher L, Price JR, Ritchie L, Newsholme W, Enoch DA, Bostock J, Cann M, Wilson APR. Joint Healthcare Infection Society (HIS) and Infection Prevention Society (IPS) guidelines for the prevention and control of meticillin-resistant Staphylococcus aureus (MRSA) in healthcare facilities. J Hosp Infect 2021; 118S:S1-S39. [PMID: 34757174 DOI: 10.1016/j.jhin.2021.09.022] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2021] [Revised: 09/03/2021] [Accepted: 09/13/2021] [Indexed: 12/28/2022]
Affiliation(s)
- J E Coia
- Department of Clinical Microbiology, Hospital South West Jutland, Esbjerg, Denmark; Department of Regional Health Research IRS, University of Southern Denmark, Denmark; Healthcare Infection Society, London, UK
| | - J A Wilson
- Richard Wells Research Centre, University of West London, London, UK; Infection Prevention Society, Seafield, UK
| | - A Bak
- Healthcare Infection Society, London, UK.
| | | | - M Shimonovich
- Healthcare Infection Society, London, UK; MRC/CSO Social and Public Health Sciences Unit, University of Glasgow, Glasgow, UK
| | - H P Loveday
- Richard Wells Research Centre, University of West London, London, UK; Infection Prevention Society, Seafield, UK
| | - H Humphreys
- Healthcare Infection Society, London, UK; Department of Clinical Microbiology, The Royal College of Surgeons, Ireland; Department of Microbiology, Beaumont Hospital, Dublin, Ireland
| | - N Wigglesworth
- Infection Prevention Society, Seafield, UK; East Kent Hospitals University, NHS Foundation Trust, Canterbury, UK
| | - A Demirjian
- Healthcare-associated Infection and Antimicrobial Resistance, Public Health England, London, UK; Paediatric Infectious Diseases and Immunology, Evelina London Children's Hospital, London, UK; Faculty of Life Sciences and Medicine, King's College London, London, UK
| | - J Brooks
- Infection Prevention Society, Seafield, UK; University Hospital Southampton NHS Foundation Trust, UK
| | - L Butcher
- Infection Prevention Society, Seafield, UK; Oxford University Hospitals NHS Foundation Trust, UK
| | - J R Price
- Healthcare Infection Society, London, UK; Imperial College Healthcare NHS Trust, London, UK
| | - L Ritchie
- Healthcare Infection Society, London, UK; NHS England and NHS Improvement, London, UK
| | - W Newsholme
- Healthcare Infection Society, London, UK; Guy's and St Thomas' NHS Foundation Trust, UK
| | - D A Enoch
- Healthcare Infection Society, London, UK; Clinical Microbiology & Public Health Laboratory, Public Health England, Addenbrooke's Hospital, Cambridge, UK
| | | | - M Cann
- Lay Member, UK; MRSA Action UK, Preston, UK
| | - A P R Wilson
- Healthcare Infection Society, London, UK; University College London Hospitals NHS Foundation Trust, UK.
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6
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Nelson MU, Shaw J, Gross SJ. Randomized Placebo-Controlled Trial of Topical Mupirocin to Reduce Staphylococcus aureus Colonization in Infants in the Neonatal Intensive Care Unit. J Pediatr 2021; 236:70-77. [PMID: 34023342 DOI: 10.1016/j.jpeds.2021.05.042] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/29/2020] [Revised: 05/14/2021] [Accepted: 05/17/2021] [Indexed: 12/13/2022]
Abstract
OBJECTIVE To evaluate the efficacy of topical mupirocin in reducing Staphylococcus aureus colonization in infants in the neonatal intensive care unit (NICU). STUDY DESIGN A prospective double-blind randomized controlled trial of mupirocin vs placebo in S aureus-colonized infants was conducted in a tertiary care NICU between October 2016 and December 2019. Weekly universal active surveillance with polymerase chain reaction screening identified colonized infants. Colonized infants received a 5-day course of mupirocin (mupirocin group) or petroleum jelly (control group). Repeat courses were given for additional positive screens. RESULTS A total of 216 infants were enrolled; 205 were included in data analyses. Primary decolonization was more successful for mupirocin-treated infants (86 of 104 [83%]) than for controls (20 of 101; 20%) (P < .001). Although recurrent S aureus colonization occurred frequently (59 of 81 [73%] mupirocin-treated and 26 of 33 [79%] controls), subsequent decolonization remained more successful for mupirocin-treated infants than for controls (38 of 49 [78%] vs 2 of 21 [10%]; P < .001). Subgroup analyses of infants of ≤30 weeks' gestational age yielded similar results; decolonization occurred more often in mupirocin-treated infants compared with control infants (63 of 76 [83%] vs 13 of 74 [18%]; P < .001). Bacterial sterile site infections tended to be less frequent in mupirocin-treated infants compared with controls (2 of 104 [2%] vs 8 of 101 [8%]; P = .057). No invasive S aureus infections occurred in mupirocin-treated infants, but 50% of infections in controls were from S aureus, and 1 resulted in death. CONCLUSIONS Universal active surveillance and targeted treatment with topical mupirocin is a successful decolonization strategy for NICU infants and may prevent S aureus infection. However, S aureus colonization frequently recurs, necessitating repeat treatment. TRIAL REGISTRATION Clinicaltrials.gov: NCT02967432.
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Affiliation(s)
- Melissa U Nelson
- Department of Pediatrics, SUNY Upstate Medical University, Syracuse, NY; Department of Neonatology, Crouse Hospital, Syracuse, NY.
| | - Jana Shaw
- Department of Pediatrics, SUNY Upstate Medical University, Syracuse, NY
| | - Steven J Gross
- Department of Pediatrics, SUNY Upstate Medical University, Syracuse, NY; Department of Neonatology, Crouse Hospital, Syracuse, NY
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Huang YC, Chen CJ, Lauderdale TLY. Detection, spread and phylogeny of meticillin-resistant Staphylococcus aureus sequence type 45 in Taiwan. Microb Genom 2021; 7:000555. [PMID: 33843577 PMCID: PMC8208682 DOI: 10.1099/mgen.0.000555] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2021] [Accepted: 03/11/2021] [Indexed: 11/18/2022] Open
Abstract
Meticillin-resistant Staphylococcus aureus (MRSA) sequence type (ST) 45 was reported in the literature to have been first identified in 2006 in Taiwan. The present study was carried out to explore and trace the emergence, transmission and evolutional dynamics of MRSA ST45 in Taiwan. We identified MRSA ST45 isolates retrospectively from two collections of MRSA isolates, namely TSAR (Taiwan Surveillance of Antimicrobial Resistance) surveys and the CGMH (Chang Gung Memorial Hospital)-based laboratory collection. Representative ST45 isolates were selected for whole-genome sequencing (WGS) analysis. A total of 9554 MRSA isolates was included in this study. Among the 3766 MRSA isolates biennially collected from TSAR surveys between 1998 and 2014, ST45 accounted for 133 (3.53 %) MRSA isolates, was first identified in 2004, and the prevalence rate peaked in 2010 (up to 10.77 %). Among the 5788 MRSA isolates collected between 1995 and 2017 by the CGMH-based laboratory, 257 isolates (4.44 %) were characterized as ST45, with most identified from nursing homes since 2012. Of the 75 isolates randomly selected for WGS, two clades were identified. The major clade, clade II, comprised 63 isolates and was phylogenetically relatively close to those isolates identified from Singapore. All but one of the isolates in clade I, the minor clade, were identified from non-Taiwanese people, mostly from newly recruited foreign workers in 2017, and were phylogenetically relatively close to one isolate from the USA (CA-347). Conclusively, the emergence of MRSA ST45 strain in Taiwan can be traced back to 2004 and the strain is connected to South-East Asian countries. Since its emergence, transmission and spread of MRSA ST45 has occurred in Taiwan.
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Affiliation(s)
- Yhu-Chering Huang
- Division of Pediatric Infectious Diseases, Chang Gung Memorial Hospital at Linkou, Kweishan, Taoyuan, Taiwan, Taiwan, ROC
- School of Medicine, Chang Gung University, Kweishan, Taoyuan, Taiwan, Taiwan, ROC
| | - Chih-Jung Chen
- Division of Pediatric Infectious Diseases, Chang Gung Memorial Hospital at Linkou, Kweishan, Taoyuan, Taiwan, Taiwan, ROC
- School of Medicine, Chang Gung University, Kweishan, Taoyuan, Taiwan, Taiwan, ROC
| | - Tsai-Ling Yang Lauderdale
- National Institute of Infectious Diseases and Vaccinology, National Health Research Institutes, Zhunan, Taiwan, Taiwan, ROC
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8
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SHEA neonatal intensive care unit (NICU) white paper series: Practical approaches to Staphylococcus aureus disease prevention. Infect Control Hosp Epidemiol 2020; 41:1251-1257. [PMID: 32921340 DOI: 10.1017/ice.2020.51] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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9
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Chen YH, Huang KYA, Huang YC, Chi H, Lu CY, Chang LY, Ho YH, Chi CY, Liu CC, Huang LM, Yang TYO, Huang YC. Prevalence and molecular characterizations of Staphylococcus aureus nasal colonization among patients in pediatric intensive care units in Taiwan. Antimicrob Resist Infect Control 2020; 9:41. [PMID: 32106887 PMCID: PMC7045409 DOI: 10.1186/s13756-020-0700-6] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2019] [Accepted: 02/11/2020] [Indexed: 11/30/2022] Open
Abstract
Background Nasal colonization of Staphylococcus aureus is a risk factor for the pathogen transmission and the development of infections. Limited information is available on the prevalence and molecular characteristics of S. aureus colonization in pediatric intensive care unit (ICU) patients. Methods A cross-sectional, island-wide study was conducted in 2011. Nasal swabs were collected from pediatric ICU patients at six tertiary hospitals in Taiwan. Results Of 114 patients enrolled in total, nasal colonization of S. arueus was detected in 30 (26.3%) of them, among whom 20 (17.5%) with methicillin-resistant S. arueus (MRSA). The ST59/SCCmec IV and V clones were most common and accounted for 45% of MRSA isolates, followed by ST239/SCCmec III (25%) and ST45/SCCmec IV (20%) clones. Three ST59 MRSA isolates carried the Panton-Valentine Leukocidin genes. Conclusions The results indicated a high prevalence of S. arueus and MRSA nasal colonization among pediatric ICU patients in Taiwan. Identification of epidemic clones warrants the implement of infection control measures to reduce colonization and prevent the dissemination of MRSA in hospitals.
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Affiliation(s)
- Yu-Hsin Chen
- Division of Pediatric Infectious Diseases, Department of Pediatrics, Chang Gung Memorial Hospital at Linkou, and College of Medicine, Chang Gung University, Taoyuan, Taiwan
| | - Kuan-Ying A Huang
- Division of Pediatric Infectious Diseases, Department of Pediatrics, Chang Gung Memorial Hospital at Linkou, and College of Medicine, Chang Gung University, Taoyuan, Taiwan.,Research Center for Emerging Viral Infections, College of Medicine, Chang Gung University, Taoyuan, Taiwan
| | - Yi-Chuan Huang
- Taiwan Pediatric Infectious Diseases Alliance, Taipei, Taiwan.,Division of Infectious Diseases, Department of Pediatrics, Kaohsiung Chang Gung Memorial Hospital and Chang Gung University College of Medicine, Kaohsiung, Taiwan
| | - Hsin Chi
- Taiwan Pediatric Infectious Diseases Alliance, Taipei, Taiwan.,Department of Pediatrics, Mackay Memorial Hospital, Taipei, Taiwan
| | - Chun-Yi Lu
- Taiwan Pediatric Infectious Diseases Alliance, Taipei, Taiwan.,Department of Pediatrics, National Taiwan University Hospital, College of Medicine, National Taiwan University, Taipei, Taiwan
| | - Luan-Yin Chang
- Taiwan Pediatric Infectious Diseases Alliance, Taipei, Taiwan.,Department of Pediatrics, National Taiwan University Hospital, College of Medicine, National Taiwan University, Taipei, Taiwan
| | - Yu-Huai Ho
- Taiwan Pediatric Infectious Diseases Alliance, Taipei, Taiwan.,Department of Internal Medicine, Buddhist Tzu Chi General Hospital, Hualien, Taiwan
| | - Chia-Yu Chi
- Taiwan Pediatric Infectious Diseases Alliance, Taipei, Taiwan. .,Department of Pediatrics, National Cheng-Kung University Hospital, Tainan, Taiwan. .,Ph.D. Program in Environmental and Occupational Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan. .,National Institute of Infectious Diseases and Vaccinology, National Health Research Institutes, Miaoli County, Taiwan.
| | - Ching-Chuan Liu
- Taiwan Pediatric Infectious Diseases Alliance, Taipei, Taiwan.,Department of Pediatrics, National Cheng-Kung University Hospital, Tainan, Taiwan
| | - Li-Min Huang
- Taiwan Pediatric Infectious Diseases Alliance, Taipei, Taiwan.,Department of Pediatrics, National Taiwan University Hospital, College of Medicine, National Taiwan University, Taipei, Taiwan
| | - Tien Yu Owen Yang
- Nuffield Department of Population Health, University of Oxford, Oxford, UK
| | - Yhu-Chering Huang
- Division of Pediatric Infectious Diseases, Department of Pediatrics, Chang Gung Memorial Hospital at Linkou, and College of Medicine, Chang Gung University, Taoyuan, Taiwan. .,Taiwan Pediatric Infectious Diseases Alliance, Taipei, Taiwan. .,National Institute of Infectious Diseases and Vaccinology, National Health Research Institutes, Miaoli County, Taiwan.
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10
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Suga S, Hoshina T, Ichikawa S, Araki S, Kusuhara K. A survey of the implementation status of selected infection control strategies in neonatal intensive care units in Japan. J Hosp Infect 2019; 104:200-206. [PMID: 31568809 DOI: 10.1016/j.jhin.2019.09.019] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2019] [Revised: 09/23/2019] [Accepted: 09/23/2019] [Indexed: 10/25/2022]
Abstract
BACKGROUND Infection control strategies are implemented in all neonatal intensive care units (NICUs); however, the details of the strategies seem to differ among institutions. The purpose of this survey was to investigate the current implementation status of infection control strategies in NICUs in Japan and to identify and recommend appropriate strategies for the prevention of outbreaks in neonatal units. METHODS This survey documented the current implementation status and methods of selected infection prevention and control measures (active surveillance cultures and standard precaution) in 453 Japanese NICUs/neonatal units registered with the Japan Society of Perinatal and Neonatal Medicine, using questionnaires, in May 2018. FINDINGS The response rate was 48.1% (level I institutions, 25.5%; level II, 55.9%; level III, 64.2%). Surveillance cultures were performed every week and targeted all bacteria in most units. The proportion of level III institutions that experienced outbreaks over the previous five years was significantly higher than that of level II institutions (55% vs 27%, P=0.0003). However, wearing a mask was less frequently recommended in level III institutions (55.7%) than in level II institutions (67.9%). Meticillin-resistant Staphylococcus aureus (MRSA) was the most frequently reported bacterial pathogen responsible for NICU outbreaks. CONCLUSION Infection prevention and control practices regarding active pathogen surveillance cultures and the use of barrier precautions varied widely in Japanese neonatal units. National guidelines and evidence-based recommendations are needed to rationalize and standardize current infection prevention and control practices in neonatal units in Japan.
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Affiliation(s)
- S Suga
- University of Occupational and Environmental Health, Japan, Kitakyushu, Japan; Department of Pediatrics, Kobe University Graduate School of Medicine, Kobe, Japan
| | - T Hoshina
- University of Occupational and Environmental Health, Japan, Kitakyushu, Japan.
| | - S Ichikawa
- University of Occupational and Environmental Health, Japan, Kitakyushu, Japan
| | - S Araki
- University of Occupational and Environmental Health, Japan, Kitakyushu, Japan
| | - K Kusuhara
- University of Occupational and Environmental Health, Japan, Kitakyushu, Japan
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11
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Kristinsdottir I, Haraldsson A, Thorkelsson T, Haraldsson G, Kristinsson KG, Larsen J, Larsen AR, Thors V. MRSA outbreak in a tertiary neonatal intensive care unit in Iceland. Infect Dis (Lond) 2019; 51:815-823. [PMID: 31507231 DOI: 10.1080/23744235.2019.1662083] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/30/2022] Open
Abstract
Introduction: Preventing the spread of methicillin-resistant Staphylococcus aureus (MRSA) and understanding the pathophysiology and transmission is essential. This study describes an MRSA outbreak in a neonatal intensive care unit in Reykjavik, Iceland at a time where no screening procedures were active. Materials and methods: After isolating MRSA in the neonatal intensive care unit in 2015, neonates, staff members and parents of positive patients were screened and environmental samples collected. The study period was from 14 April 2015 until 31 August 2015. Antimicrobial susceptibility testing, spa-typing and whole genome sequencing were done on MRSA isolates. Results: During the study period, 96/143 admitted patients were screened for colonization. Non-screened infants had short admissions not including screening days. MRSA was isolated from nine infants and seven parents. All tested staff members were negative. Eight infants and six parents carried MRSA ST30-IVc with spa-type t253 and one infant and its parent carried MRSA CC9-IVa (spa-type t4845) while most environmental samples were MRSA CC9-IVa (spa-type t4845). Whole genome sequencing revealed close relatedness between all ST30-IVc and CC9-IVa isolates, respectively. All colonized infants received decolonization treatment, but 3/9 were still positive when last sampled. Discussion: The main outbreak source was a single MRSA ST30-IVc (spa-type t253), isolated for the first time in Iceland. A new CC9-IVa (spa-type t4845) was also identified, most abundant on environmental surfaces but only in one patient. The reason for the differences in the epidemiology of the two strains is not clear. The study highlights a need for screening procedures in high-risk settings and guidelines for neonatal decolonization.
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Affiliation(s)
| | - Asgeir Haraldsson
- Faculty of Medicine, University of Iceland , Reykjavík , Iceland.,Children's Hospital Iceland, Landspitali University Hospital , Reykjavík , Iceland
| | - Thordur Thorkelsson
- Faculty of Medicine, University of Iceland , Reykjavík , Iceland.,Children's Hospital Iceland, Landspitali University Hospital , Reykjavík , Iceland
| | - Gunnsteinn Haraldsson
- Faculty of Medicine, University of Iceland , Reykjavík , Iceland.,Department of Clinical Microbiology, Landspitali University Hospital , Reykjavík , Iceland
| | - Karl G Kristinsson
- Faculty of Medicine, University of Iceland , Reykjavík , Iceland.,Department of Clinical Microbiology, Landspitali University Hospital , Reykjavík , Iceland
| | - Jesper Larsen
- Department of Bacteria, Parasites and Fungi, Statens Serum Institute , Copenhagen , Denmark
| | - Anders Rhod Larsen
- Department of Bacteria, Parasites and Fungi, Statens Serum Institute , Copenhagen , Denmark
| | - Valtyr Thors
- Faculty of Medicine, University of Iceland , Reykjavík , Iceland.,Children's Hospital Iceland, Landspitali University Hospital , Reykjavík , Iceland
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12
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McNeil JC, Campbell JR, Crews JD. The Role of the Environment and Colonization in Healthcare-Associated Infections. HEALTHCARE-ASSOCIATED INFECTIONS IN CHILDREN 2019. [PMCID: PMC7120697 DOI: 10.1007/978-3-319-98122-2_2] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Healthcare-associated infections (HAIs) can be caused by endogenous host microbial flora or by exogenous microbes, including those found in the hospital environment. Efforts to decrease endogenous pathogens via decolonization and skin antisepsis may decrease the risk of infection in some settings. Controlling the spread of potential pathogens from the environment requires meticulous attention to cleaning and disinfection practices. In addition to selection of the appropriate cleaning agent, use of tools that assess the adequacy of cleaning and addition of no-touch cleaning technology may decrease environmental contamination. Hand hygiene is also a critical component of preventing transmission of pathogens from the environment to patients via healthcare worker hands.
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Affiliation(s)
- J. Chase McNeil
- Department of Pediatrics, Section of Infectious Diseases, Baylor College of Medicine and Texas Children’s Hospital, Houston, TX USA
| | - Judith R. Campbell
- Department of Pediatrics, Section of Infectious Diseases, Baylor College of Medicine and Texas Children’s Hospital, Houston, TX USA
| | - Jonathan D. Crews
- Department of Pediatrics, Baylor College of Medicine and The Children’s Hospital of San Antonio, San Antonio, TX USA
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13
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Clock SA, Jia H, Patel S, Ferng YH, Alba L, Whittier S, DeLaMora P, Tabibi S, Perlman J, Paul D, Zaoutis T, Larson E, Saiman L. Infant Colonization With Methicillin-Resistant Staphylococcus aureus or Vancomycin-Resistant Enterococci Preceding Neonatal Intensive Care Unit Discharge. J Pediatric Infect Dis Soc 2017; 6:e144-e148. [PMID: 28339914 PMCID: PMC5907882 DOI: 10.1093/jpids/pix003] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/28/2016] [Accepted: 02/21/2017] [Indexed: 12/27/2022]
Abstract
Rates of colonization with methicillin-resistant Staphylococcus aureus (MRSA) and/or vancomycin-resistant enterococci (VRE) were determined for 1320 infants within 7 days of neonatal intensive care unit discharge. Overall, 4% and 1% of the infants were colonized with MRSA or VRE, respectively. Predictors identified in fixed-effects models were surgery during hospitalization (for MRSA colonization) and prolonged antimicrobial treatment (for VRE colonization).
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Affiliation(s)
| | - Haomiao Jia
- Columbia University School of Nursing, New York;,Department of Biostatistics, Columbia University Mailman School of Public Health, New York
| | | | | | | | | | | | | | - Jeffrey Perlman
- Department of Pediatrics, Weill Cornell Medical College, New York
| | - David Paul
- Christiana Neonatal Associates, Christiana Care Health System, Newark, Delaware
| | - Theoklis Zaoutis
- Children’s Hospital of Philadelphia, Philadelphia, Pennsylvania; and
| | | | - Lisa Saiman
- Departments of Pediatrics and,Department of Infection Prevention and Control, NewYork-Presbyterian Hospital, New York,Correspondence: L. Saiman, MD, MPH, Department of Pediatrics, 650 West 168th St., PH 4W-470, New York, NY 10032 ()
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14
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Bacterial Infections in Neonates Following Mupirocin-Based MRSA Decolonization: A Multicenter Cohort Study. Infect Control Hosp Epidemiol 2017; 38:930-936. [PMID: 28578731 DOI: 10.1017/ice.2017.108] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
OBJECTIVE To characterize the risk of infection after MRSA decolonization with intranasal mupirocin. DESIGN Multicenter, retrospective cohort study. SETTING Tertiary care neonatal intensive care units (NICUs) from 3 urban hospitals in the United States ranging in size from 45 to 100 beds. METHODS MRSA-colonized neonates were identified from NICU admissions occurring from January 2007 to December 2014, during which a targeted decolonization strategy was used for MRSA control. In 2 time-to-event analyses, MRSA-colonized neonates were observed from the date of the first MRSA-positive surveillance screen until (1) the first occurrence of novel gram-positive cocci in sterile culture or discharge or (2) the first occurrence of novel gram-negative bacilli in sterile culture or discharge. Mupirocin exposure was treated as time varying. RESULTS A total of 522 MRSA-colonized neonates were identified from 16,144 neonates admitted to site NICUs. Of the MRSA-colonized neonates, 384 (74%) received mupirocin. Average time from positive culture to mupirocin treatment was 3.5 days (standard deviation, 7.2 days). The adjusted hazard of gram-positive cocci infection was 64% lower among mupirocin-exposed versus mupirocin-unexposed neonates (hazard ratio, 0.36; 95% confidence interval [CI], 0.17-0.76), whereas the adjusted hazard ratio of gram-negative bacilli infection comparing mupirocin-exposed and -unexposed neonates was 1.05 (95% CI, 0.42-2.62). CONCLUSIONS In this multicentered cohort of MRSA-colonized neonates, mupirocin-based decolonization treatment appeared to decrease the risk of infection with select gram-positive organisms as intended, and the treatment was not significantly associated with risk of subsequent infections with organisms not covered by mupirocin's spectrum of activity. Infect Control Hosp Epidemiol 2017;38:930-936.
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15
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Botelho-Nevers E, Gagnaire J, Verhoeven PO, Cazorla C, Grattard F, Pozzetto B, Berthelot P, Lucht F. Decolonization of Staphylococcus aureus carriage. Med Mal Infect 2016; 47:305-310. [PMID: 27856080 DOI: 10.1016/j.medmal.2016.10.005] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2015] [Revised: 04/25/2016] [Accepted: 10/11/2016] [Indexed: 10/20/2022]
Abstract
Staphylococcus aureus nasal colonization is a well-known independent risk factor for infection caused by this bacterium. Screening and decolonization of carriers have been proven effective in reducing S. aureus infections in some populations. However, a gap remains between what has been proven effective and what is currently done. We aimed to summarize recommendations and current knowledge of S. aureus decolonization to answer the following questions: Why? For whom? How? When? And what are the perspectives?
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Affiliation(s)
- E Botelho-Nevers
- Infectious diseases department, university hospital of Saint-Étienne, avenue Albert-Raimond, 42055 Saint-Étienne cedex 02, France; Groupe immunité des muqueuses et agents pathogènes (GIMAP EA 3064), university of Lyon, 42023 Saint-Étienne, France.
| | - J Gagnaire
- Infectious diseases department, university hospital of Saint-Étienne, avenue Albert-Raimond, 42055 Saint-Étienne cedex 02, France; Groupe immunité des muqueuses et agents pathogènes (GIMAP EA 3064), university of Lyon, 42023 Saint-Étienne, France; Laboratory of infectious agents and hygiene, university hospital of Saint-Étienne, 42055 Saint-Étienne cedex 02, France
| | - P O Verhoeven
- Groupe immunité des muqueuses et agents pathogènes (GIMAP EA 3064), university of Lyon, 42023 Saint-Étienne, France; Laboratory of infectious agents and hygiene, university hospital of Saint-Étienne, 42055 Saint-Étienne cedex 02, France
| | - C Cazorla
- Infectious diseases department, university hospital of Saint-Étienne, avenue Albert-Raimond, 42055 Saint-Étienne cedex 02, France; Groupe immunité des muqueuses et agents pathogènes (GIMAP EA 3064), university of Lyon, 42023 Saint-Étienne, France
| | - F Grattard
- Groupe immunité des muqueuses et agents pathogènes (GIMAP EA 3064), university of Lyon, 42023 Saint-Étienne, France; Laboratory of infectious agents and hygiene, university hospital of Saint-Étienne, 42055 Saint-Étienne cedex 02, France
| | - B Pozzetto
- Groupe immunité des muqueuses et agents pathogènes (GIMAP EA 3064), university of Lyon, 42023 Saint-Étienne, France; Laboratory of infectious agents and hygiene, university hospital of Saint-Étienne, 42055 Saint-Étienne cedex 02, France
| | - P Berthelot
- Infectious diseases department, university hospital of Saint-Étienne, avenue Albert-Raimond, 42055 Saint-Étienne cedex 02, France; Groupe immunité des muqueuses et agents pathogènes (GIMAP EA 3064), university of Lyon, 42023 Saint-Étienne, France; Laboratory of infectious agents and hygiene, university hospital of Saint-Étienne, 42055 Saint-Étienne cedex 02, France
| | - F Lucht
- Infectious diseases department, university hospital of Saint-Étienne, avenue Albert-Raimond, 42055 Saint-Étienne cedex 02, France; Groupe immunité des muqueuses et agents pathogènes (GIMAP EA 3064), university of Lyon, 42023 Saint-Étienne, France
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16
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Pierce R, Lessler J, Popoola VO, Milstone AM. Meticillin-resistant Staphylococcus aureus (MRSA) acquisition risk in an endemic neonatal intensive care unit with an active surveillance culture and decolonization programme. J Hosp Infect 2016; 95:91-97. [PMID: 27887754 DOI: 10.1016/j.jhin.2016.10.022] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2016] [Accepted: 10/23/2016] [Indexed: 11/26/2022]
Abstract
BACKGROUND Meticillin-resistant Staphylococcus aureus (MRSA) is a leading cause of healthcare-associated infection in the neonatal intensive care unit (NICU). Decolonization may eliminate bacterial reservoirs that drive MRSA transmission. AIM To measure the association between colonization pressure from decolonized and non-decolonized neonates and MRSA acquisition to inform use of this strategy for control of endemic MRSA. METHODS An eight-year retrospective cohort study was conducted in a level-4 NICU that used active surveillance cultures and decolonization for MRSA control. Weekly colonization pressure exposures were defined as the number of patient-days of concurrent admission with treated (decolonized) and untreated (non-decolonized) MRSA carriers in the preceding seven days. Poisson regression was used to estimate risk of incident MRSA colonization associated with colonization pressure exposures. The population-attributable fraction was calculated to assess the proportion of overall unit MRSA incidence attributable to treated or untreated patients in this setting. FINDINGS Every person-day increase in exposure to an untreated MRSA carrier was associated with a 6% increase in MRSA acquisition risk [relative risk (RR): 1.06; 95% confidence interval (CI): 1.01-1.11]. Risk of acquisition was not influenced by exposure to treated, isolated MRSA carriers (RR: 1.01; 95% CI: 0.98-1.04). In the context of this MRSA control programme, 22% (95% CI: 4.0-37) of MRSA acquisition could be attributed to exposures to untreated MRSA carriers. CONCLUSION Untreated MRSA carriers were an important reservoir for transmission. Decolonized patients on contact isolation posed no detectable transmission threat, supporting the hypothesis that decolonization may reduce patient-to-patient transmission. Non-patient reservoirs may contribute to unit MRSA acquisition and require further investigation.
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Affiliation(s)
- R Pierce
- Department of Epidemiology, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD, USA
| | - J Lessler
- Department of Epidemiology, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD, USA
| | - V O Popoola
- Department of Epidemiology, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD, USA; Department of Pediatrics, Division of Pediatric Infectious Diseases, Johns Hopkins University School of Medicine, Baltimore, MA, USA
| | - A M Milstone
- Department of Epidemiology, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD, USA; Department of Pediatrics, Division of Pediatric Infectious Diseases, Johns Hopkins University School of Medicine, Baltimore, MA, USA; Department of Hospital Epidemiology and Infection Control, Johns Hopkins Hospital, Baltimore, MA, USA.
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17
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Smith SL, Serke L. Case Report of Sepsis in Neonates Fed Expressed Mother's Milk. J Obstet Gynecol Neonatal Nurs 2016; 45:699-705. [DOI: 10.1016/j.jogn.2016.05.006] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/01/2016] [Indexed: 12/19/2022] Open
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18
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Surveillance and Isolation of Methicillin-Resistant Staphylococcus aureus Colonization in the Neonatal Intensive Care Unit. Adv Neonatal Care 2016; 16:298-307. [PMID: 27391565 DOI: 10.1097/anc.0000000000000312] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
BACKGROUND Neonatal sepsis causes 1.4 million (36%) neonatal deaths annually. Staphylococcus aureus (SA), a common skin pathogen, remains the second leading cause of late-onset sepsis in the neonatal intensive care unit (NICU). Methicillin-resistant Staphylococcus aureus (MRSA), a resistant strain of SA, has created a significant global communicable health risk, especially in the NICU. PURPOSE To examine evidence related to NICU infection control practices surrounding MRSA surveillance, identification, and isolation in response to the clinical question, "What strategies should be universally implemented in the NICU to identify and prevent the spread of MRSA?" METHODS/SEARCH STRATEGY Databases were examined for articles on the topical area of MRSA in the neonate. Key terms were used to streamline the search, resulting in 20 primary works and 3 guideline/consensus statements considered imperative in response to the clinical questions. FINDINGS/RESULTS Hand hygiene remains the cornerstone to sound infection control practice. Colonization often leads to systemic infection, with smaller neonates at greatest risk. Hospital infection control compliance has improved outcomes. MRSA surveillance has reduced horizontal spread. No universal, specific recommendations exist to guide surveillance and management of MRSA in the NICU. IMPLICATIONS FOR PRACTICE Standardized guidelines with procedures for hand hygiene, patient surveillance and isolation, and patient cohorting with recommended staffing patterns should guide practice in the NICU. Both MRSA culture and polymerase chain reaction effectively identify positive patients. Decolonization practices are not yet clear. IMPLICATIONS FOR RESEARCH Evaluation of standard isolation practices versus outbreak response and approaches to neonatal decolonization should be evaluated for efficacy, safety, and resistance.
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19
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Abstract
PURPOSE OF REVIEW Hospital-acquired infections cause up to 19% of infections in paediatric patients contributing to the spread of antimicrobial resistance. This review evaluates the effect of decolonization and decontamination in hospitalized children and neonates as an adjunct to standard infection control measures. RECENT FINDINGS Few studies on decolonization and decontamination are available in children. The evidence about the effectiveness of daily chlorhexidine washcloths on bacteraemia in paediatric patients relies on a single randomized controlled trial, in neonates with central venous access in a single retrospective observational study. It is uncertain whether nasal mupirocin reduces methicillin-resistant Staphylococcus aureus carriage and infections in neonates, whereas oral chlorhexidine mouthwashes have not proven effective in children in intensive care settings. Scanty evidence demonstrates a reduction in the rate of ventilation-acquired pneumonia with digestive tract decontamination in paediatric patients and no studies are available in neonates. These strategies have not been extensively tested in resource-poor countries. SUMMARY Strong evidence about the efficacy of decolonization and decontamination interventions exists in adult medicine but not in paediatric patients. There is an urgent need to understand how these interventions could be adapted to neonates and resource-poor settings in which the prevalence of hospital-acquired infections is higher.
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20
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Koh JW, Song IG, Kim SY, Jung YH, Shin SH, Kim EK, Kim HS, Choi JH, Lee JY. Decolonization of Methicillin resistant Staphylococcus aureus: Role in the Neonatal Intensive Care Unit. NEONATAL MEDICINE 2016. [DOI: 10.5385/nm.2016.23.2.95] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Affiliation(s)
- Ji Won Koh
- Department of Pediatrics, Seoul National University College of Medicine, Seoul, Korea
| | - In Gyu Song
- Department of Pediatrics, Seoul National University College of Medicine, Seoul, Korea
| | - Sae Yun Kim
- Department of Pediatrics, Seoul National University College of Medicine, Seoul, Korea
| | - Young Hwa Jung
- Department of Pediatrics, Seoul National University College of Medicine, Seoul, Korea
| | - Seung Han Shin
- Department of Pediatrics, Seoul National University College of Medicine, Seoul, Korea
| | - Ee-Kyung Kim
- Department of Pediatrics, Seoul National University College of Medicine, Seoul, Korea
| | - Han-Suk Kim
- Department of Pediatrics, Seoul National University College of Medicine, Seoul, Korea
| | - Jung-Hwan Choi
- Department of Pediatrics, Seoul National University College of Medicine, Seoul, Korea
| | - Ju-Young Lee
- Department of Pediatrics, Inha University College of Medicine, Incheon, Korea
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21
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Nair R, Perencevich EN, Blevins AE, Goto M, Nelson RE, Schweizer ML. Clinical Effectiveness of Mupirocin for Preventing Staphylococcus aureus Infections in Nonsurgical Settings: A Meta-analysis. Clin Infect Dis 2015; 62:618-630. [PMID: 26503378 DOI: 10.1093/cid/civ901] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2015] [Accepted: 10/16/2015] [Indexed: 11/15/2022] Open
Abstract
A systematic literature review and meta-analysis was performed to identify effectiveness of mupirocin decolonization in prevention of Staphylococcus aureus infections, among nonsurgical settings. Of the 15 662 unique studies identified up to August 2015, 13 randomized controlled trials, 22 quasi-experimental studies, and 1 retrospective cohort study met the inclusion criteria. Studies were excluded if mupirocin was not used for decolonization, there was no control group, or the study was conducted in an outbreak setting. The crude risk ratios were pooled (cpRR) using a random-effects model. We observed substantial heterogeneity among included studies (I(2) = 80%). Mupirocin was observed to reduce the risk for S. aureus infections by 59% (cpRR, 0.41; 95% confidence interval [CI], .36-.48) and 40% (cpRR, 0.60; 95% CI, .46-.79) in both dialysis and nondialysis settings, respectively. Mupirocin decolonization was protective against S. aureus infections among both dialysis and adult intensive care patients. Future studies are needed in other settings such as long-term care and pediatrics.
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Affiliation(s)
- Rajeshwari Nair
- Department of Epidemiology, University of Iowa College of Public Health.,Center for Comprehensive Access and Delivery Research and Evaluation, Iowa City Veterans Affairs Health Care System.,Department of Internal Medicine, University of Iowa Carver College of Medicine
| | - Eli N Perencevich
- Department of Epidemiology, University of Iowa College of Public Health.,Center for Comprehensive Access and Delivery Research and Evaluation, Iowa City Veterans Affairs Health Care System.,Department of Internal Medicine, University of Iowa Carver College of Medicine
| | - Amy E Blevins
- Hardin Library for Health Sciences, University of Iowa, Iowa City
| | - Michihiko Goto
- Center for Comprehensive Access and Delivery Research and Evaluation, Iowa City Veterans Affairs Health Care System.,Department of Internal Medicine, University of Iowa Carver College of Medicine
| | - Richard E Nelson
- IDEAS Center, Veterans Affairs Salt Lake City Health Care System, Utah
| | - Marin L Schweizer
- Department of Epidemiology, University of Iowa College of Public Health.,Center for Comprehensive Access and Delivery Research and Evaluation, Iowa City Veterans Affairs Health Care System.,Department of Internal Medicine, University of Iowa Carver College of Medicine
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