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Stewardson AJ, Davis JS, Dunlop AJ, Tong SYC, Matthews GV. How I manage severe bacterial infections in people who inject drugs. Clin Microbiol Infect 2024; 30:877-882. [PMID: 38316359 DOI: 10.1016/j.cmi.2024.01.022] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2023] [Revised: 01/21/2024] [Accepted: 01/30/2024] [Indexed: 02/07/2024]
Abstract
BACKGROUND Injecting drug use is a risk factor for severe bacterial infection, but there is limited high-quality evidence to guide clinicians providing care to people who inject drugs. Management can be complicated by mistrust, stigma, and competing patient priorities. OBJECTIVES To review the management of severe infections in people who inject drugs, using an illustrative clinical scenario of complicated Staphylococcus aureus bloodstream infection. SOURCES The discussion is based on recent literature searches of relevant topics. Very few randomized clinical trials have focussed specifically on the management of severe bacterial infections among people who inject drugs. Most recommendations are, therefore, based on observational studies, extrapolation from other patient groups, and the experience and opinions of the authors. CONTENT We discuss evidence and options regarding the following management issues for severe bacterial infections among people who inject drugs: initial management of sepsis; indications for surgical management; assessment and management of substance dependence; approaches to antibiotic administration following clinical stability; opportunistic health promotion; and secondary prevention of bacterial infections. Throughout, we highlight the importance of harm reduction and strategies to optimize patient engagement in care through a patient-centred approach. IMPLICATIONS We advocate for a multi-disciplinary trauma-informed approach to the management of severe bacterial infection among people who inject drugs. We emphasize the need for pragmatic trials to inform management guidelines, including those that are co-designed with the community. In particular, research is needed to establish the comparative effectiveness, safety, and cost-effectiveness of inpatient intravenous antibiotics vs. early oral antibiotic switch, outpatient parenteral therapy, and long-acting lipoglycopeptide antibiotics in this scenario.
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Affiliation(s)
- Andrew J Stewardson
- Department of Infectious Diseases, The Alfred and Central Clinical School, Monash University, Melbourne, VIC, Australia.
| | - Joshua S Davis
- School of Medicine and Public Health, The University of Newcastle, Newcastle, NSW, Australia; Infection Research Program, Hunter Medical Research Institute, Newcastle, NSW, Australia; Menzies School of Health Research, Charles Darwin University, Darwin, NT, Australia
| | - Adrian J Dunlop
- School of Medicine and Public Health, The University of Newcastle, Newcastle, NSW, Australia; NSW Drug and Alcohol Clinical Research and Improvement Network, Sydney, NSW, Australia; Drug and Alcohol Clinical Services, Hunter New England Local Health District, Newcastle, NSW, Australia; Hunter Medical Research Institute, The University of Newcastle, Newcastle, NSW, Australia
| | - Steven Y C Tong
- Victorian Infectious Diseases Service, The Royal Melbourne Hospital, Peter Doherty Institute for Infection and Immunity, Melbourne, VIC, Australia; Department of Infectious Diseases, The University of Melbourne at the Peter Doherty Institute for Infection and Immunity, Melbourne, VIC, Australia
| | - Gail V Matthews
- The Kirby Institute, University of New South Wales, Sydney, NSW, Australia; St Vincent's Hospital, Sydney, NSW, Australia
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Attwood LO, O'Keefe D, Higgs P, Vujovic O, Doyle JS, Stewardson AJ. Epidemiology of acute infections in people who inject drugs in Australia. Drug Alcohol Rev 2024; 43:304-314. [PMID: 37995135 PMCID: PMC10952783 DOI: 10.1111/dar.13772] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2023] [Revised: 08/23/2023] [Accepted: 10/20/2023] [Indexed: 11/25/2023]
Abstract
ISSUES People who inject drugs are at risk of acute infections, such as skin and soft tissue infections, infective endocarditis, bone and joint infections and bloodstream infections. There has been an increase in these infections in people who inject drugs internationally over the past 10 years. However, the local data regarding acute infections in Australia has not been well described. APPROACH We review the epidemiology of acute infections and associated morbidity and mortality amongst people who inject drugs in Australia. We summarise risk factors for these infections, including the concurrent social and psychological determinants of health. KEY FINDINGS The proportion of people who report having injected drugs in the prior 12 months in Australia has decreased over the past 18 years. However, there has been an increase in the burden of acute infections in this population. This increase is driven largely by skin and soft tissue infections. People who inject drugs often have multiple conflicting priorities that can delay engagement in care. IMPLICATIONS Acute infections in people who inject drugs are associated with significant morbidity and mortality. Acute infections contribute to significant bed days, surgical requirements and health-care costs in Australia. The increase in these infections is likely due to a complex interplay of microbiological, individual, social and environmental factors. CONCLUSION Acute infections in people who inject drugs in Australia represent a significant burden to both patients and health-care systems. Flexible health-care models, such as low-threshold wound clinics, would help directly target, and address early interventions, for these infections.
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Affiliation(s)
- Lucy O. Attwood
- Department of Infectious Diseases, The Alfred Hospital and Central Clinical SchoolMonash UniversityMelbourneAustralia
| | | | - Peter Higgs
- Burnet InstituteMelbourneAustralia
- Department of Public HealthLa Trobe UniversityMelbourneAustralia
| | - Olga Vujovic
- Department of Infectious Diseases, The Alfred Hospital and Central Clinical SchoolMonash UniversityMelbourneAustralia
| | - Joseph S. Doyle
- Department of Infectious Diseases, The Alfred Hospital and Central Clinical SchoolMonash UniversityMelbourneAustralia
- Burnet InstituteMelbourneAustralia
| | - Andrew J. Stewardson
- Department of Infectious Diseases, The Alfred Hospital and Central Clinical SchoolMonash UniversityMelbourneAustralia
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Curtis SJ, Colledge-Frisby S, Stewardson AJ, Doyle JS, Higgs P, Maher L, Hickman M, Stoové MA, Dietze PM. Prevalence and incidence of emergency department presentations and hospital separations with injecting-related infections in a longitudinal cohort of people who inject drugs. Epidemiol Infect 2023; 151:e192. [PMID: 37953739 PMCID: PMC10728979 DOI: 10.1017/s0950268823001784] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2023] [Revised: 10/05/2023] [Accepted: 10/26/2023] [Indexed: 11/14/2023] Open
Abstract
People who inject drugs are at risk of acute bacterial and fungal injecting-related infections. There is evidence that incidence of hospitalizations for injecting-related infections are increasing in several countries, but little is known at an individual level. We aimed to examine injecting-related infections in a linked longitudinal cohort of people who inject drugs in Melbourne, Australia. A retrospective descriptive analysis was conducted to estimate the prevalence and incidence of injecting-related infections using administrative emergency department and hospital separation datasets linked to the SuperMIX cohort, from 2008 to 2018. Over the study period, 33% (95%CI: 31-36%) of participants presented to emergency department with any injecting-related infections and 27% (95%CI: 25-30%) were admitted to hospital. Of 1,044 emergency department presentations and 740 hospital separations, skin and soft tissue infections were most common, 88% and 76%, respectively. From 2008 to 2018, there was a substantial increase in emergency department presentations and hospital separations with any injecting-related infections, 48 to 135 per 1,000 person-years, and 18 to 102 per 1,000 person-years, respectively. The results emphasize that injecting-related infections are increasing, and that new models of care are needed to help prevent and facilitate early detection of superficial infection to avoid potentially life-threatening severe infections.
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Affiliation(s)
- Stephanie J. Curtis
- Disease Elimination Program, Burnet Institute, Melbourne, VIC, Australia
- Department of Infectious Diseases, the Alfred Hospital and Central Clinical School, Monash University, Melbourne, VIC, Australia
| | - Samantha Colledge-Frisby
- Disease Elimination Program, Burnet Institute, Melbourne, VIC, Australia
- National Drug Research Institute, Curtin University, Melbourne, VIC, Australia
| | - Andrew J. Stewardson
- Department of Infectious Diseases, the Alfred Hospital and Central Clinical School, Monash University, Melbourne, VIC, Australia
| | - Joseph S. Doyle
- Disease Elimination Program, Burnet Institute, Melbourne, VIC, Australia
- Department of Infectious Diseases, the Alfred Hospital and Central Clinical School, Monash University, Melbourne, VIC, Australia
| | - Peter Higgs
- Disease Elimination Program, Burnet Institute, Melbourne, VIC, Australia
- Department of Public Health, La Trobe University, Bundoora, VIC, Australia
| | - Lisa Maher
- Disease Elimination Program, Burnet Institute, Melbourne, VIC, Australia
- The Kirby Institute, Faculty of Medicine, UNSW, Wallace Wurth Building, Kensington, NSW, Australia
| | - Matthew Hickman
- Disease Elimination Program, Burnet Institute, Melbourne, VIC, Australia
- Population Health Sciences, Bristol Medical School, University of Bristol, Bristol, UK
| | - Mark A. Stoové
- Disease Elimination Program, Burnet Institute, Melbourne, VIC, Australia
- The Kirby Institute, Faculty of Medicine, UNSW, Wallace Wurth Building, Kensington, NSW, Australia
- School of Public Health and Preventive Medicine, Monash University, Melbourne, VIC, Australia
| | - Paul M. Dietze
- Disease Elimination Program, Burnet Institute, Melbourne, VIC, Australia
- National Drug Research Institute, Curtin University, Melbourne, VIC, Australia
- School of Public Health and Preventive Medicine, Monash University, Melbourne, VIC, Australia
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Lewer D, Brothers TD, Croxford S, Desai M, Emanuel E, Harris M, Hope VD. Opioid Injection-Associated Bacterial Infections in England, 2002-2021: A Time Series Analysis of Seasonal Variation and the Impact of Coronavirus Disease 2019. Clin Infect Dis 2023; 77:338-345. [PMID: 36916065 PMCID: PMC10425189 DOI: 10.1093/cid/ciad144] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2023] [Revised: 03/07/2023] [Accepted: 03/09/2023] [Indexed: 03/14/2023] Open
Abstract
BACKGROUND Bacterial infections cause substantial pain and disability among people who inject drugs. We described time trends in hospital admissions for injecting-related infections in England. METHODS We analyzed hospital admissions in England between January 2002 and December 2021. We included patients with infections commonly caused by drug injection, including cutaneous abscesses, cellulitis, endocarditis, or osteomyelitis, and a diagnosis of opioid use disorder. We used Poisson regression to estimate seasonal variation and changes associated with coronavirus disease 2019 (COVID-19) response. RESULTS There were 92 303 hospital admissions for injection-associated infections between 2002 and 2021. Eighty-seven percent were skin, soft-tissue, or vascular infections; 72% of patients were male; and the median age increased from 31 years in 2002 to 42 years in 2021. The rate of admissions reduced from 13.97 per day (95% confidence interval [CI], 13.59-14.36) in 2003 to 8.94 (95% CI, 8.64-9.25) in 2011, then increased to 18.91 (95% CI, 18.46-19.36) in 2019. At the introduction of COVID-19 response in March 2020, the rate of injection-associated infections reduced by 35.3% (95% CI, 32.1-38.4). Injection-associated infections were also seasonal; the rate was 1.21 (95% CI, 1.18-1.24) times higher in July than in February. CONCLUSIONS This incidence of opioid injection-associated infections varies within years and reduced following COVID-19 response measures. This suggests that social and structural factors such as housing and the degree of social mixing may contribute to the risk of infection, supporting investment in improved social conditions for this population as a means to reduce the burden of injecting-related infections.
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Affiliation(s)
- Dan Lewer
- Blood Safety, Hepatitis, Sexually Transmitted Infections and HIV Division, UK Health Security Agency, London, United Kingdom
- Department of Epidemiology and Public Health, UCL, London, United Kingdom
- Bradford Institute for Health Research, Bradford Teaching Hospitals NHS Foundation Trust, Bradford, United Kingdom
| | - Thomas D Brothers
- Department of Epidemiology and Public Health, UCL, London, United Kingdom
- Department of Medicine, Dalhousie University, Halifax, Nova Scotia, Canada
| | - Sara Croxford
- Blood Safety, Hepatitis, Sexually Transmitted Infections and HIV Division, UK Health Security Agency, London, United Kingdom
| | - Monica Desai
- Blood Safety, Hepatitis, Sexually Transmitted Infections and HIV Division, UK Health Security Agency, London, United Kingdom
| | - Eva Emanuel
- Blood Safety, Hepatitis, Sexually Transmitted Infections and HIV Division, UK Health Security Agency, London, United Kingdom
| | - Magdalena Harris
- Department of Public Health, Environments and Society, London School of Hygiene & Tropical Medicine, London, United Kingdom
| | - Vivian D Hope
- Blood Safety, Hepatitis, Sexually Transmitted Infections and HIV Division, UK Health Security Agency, London, United Kingdom
- Public Health Institute, Liverpool John Moores University, Liverpool, United Kingdom
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Attwood LO, Bryant M, Lee SJ, Vujovic O, Higgs P, Doyle JS, Stewardson AJ. Epidemiology and Management of invasive infections among people who Use drugs (EMU): protocol for a prospective, multicentre cohort study. BMJ Open 2023; 13:e070236. [PMID: 37012020 PMCID: PMC10083776 DOI: 10.1136/bmjopen-2022-070236] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 04/04/2023] Open
Abstract
INTRODUCTION People who inject drugs (PWID) are at risk of invasive infections such as bloodstream infections, endocarditis, osteomyelitis and septic arthritis. Such infections require prolonged antibiotic therapy, but there is limited evidence about the optimal care model to deliver to this population. The Epidemiology and Management of invasive infections among people who Use drugs (EMU) study aims to (1) describe the current burden, clinical spectrum, management and outcomes of invasive infections in PWID; (2) determine the impact of currently available models of care on completion of planned antimicrobials for PWID admitted to hospital with invasive infections and (3) determine postdischarge outcomes of PWID admitted with invasive infections at 30 and 90 days. METHODS AND ANALYSIS EMU is a prospective multicentre cohort study of Australian public hospitals who provide care to PWIDs with invasive infections. All patients who have injected drugs in the previous six months and are admitted to a participating site for management of an invasive infection are eligible. EMU has two components: (1) EMU-Audit will collect information from medical records, including demographics, clinical presentation, management and outcomes; (2) EMU-Cohort will augment this with interviews at baseline, 30 and 90 days post-discharge, and data linkage examining readmission rates and mortality. The primary exposure is antimicrobial treatment modality, categorised as inpatient intravenous antimicrobials, outpatient antimicrobial therapy, early oral antibiotics or lipoglycopeptide. The primary outcome is confirmed completion of planned antimicrobials. We aim to recruit 146 participants over a 2-year period. ETHICS AND DISSEMINATION EMU has been approved by the Alfred Hospital Human Research Ethics Committee (Project number 78815.) EMU-Audit will collect non-identifiable data with a waiver of consent. EMU-Cohort will collect identifiable data with informed consent. Findings will be presented at scientific conferences and disseminated by peer-review publications. TRIAL REGISTRATION NUMBER ACTRN12622001173785; Pre-results.
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Affiliation(s)
- Lucy O Attwood
- Department of Infectious Diseases, the Alfred Hospital and Central Clinical School, Monash University, Melbourne, Victoria, Australia
| | - Mellissa Bryant
- Department of Infectious Diseases, the Alfred Hospital and Central Clinical School, Monash University, Melbourne, Victoria, Australia
- Disease Elimination Program, Burnet Institute, Melbourne, Victoria, Australia
| | - Sue J Lee
- Department of Infectious Diseases, the Alfred Hospital and Central Clinical School, Monash University, Melbourne, Victoria, Australia
| | - Olga Vujovic
- Department of Infectious Diseases, the Alfred Hospital and Central Clinical School, Monash University, Melbourne, Victoria, Australia
| | - Peter Higgs
- Disease Elimination Program, Burnet Institute, Melbourne, Victoria, Australia
- Department of Public Health, La Trobe University, Melbourne, Victoria, Australia
| | - Joseph S Doyle
- Department of Infectious Diseases, the Alfred Hospital and Central Clinical School, Monash University, Melbourne, Victoria, Australia
- Disease Elimination Program, Burnet Institute, Melbourne, Victoria, Australia
| | - Andrew J Stewardson
- Department of Infectious Diseases, the Alfred Hospital and Central Clinical School, Monash University, Melbourne, Victoria, Australia
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