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Secombe P, Lankin E, Beadle R, McAnulty G, Brown A, Bailey M, Schultz R, Pilcher D. Aboriginal and Torres Strait Islander Attitudes to Organ Donation in Central Australia: A Qualitative Pilot Study. Transplant Direct 2024; 10:e1692. [PMID: 39220219 PMCID: PMC11365648 DOI: 10.1097/txd.0000000000001692] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2024] [Revised: 06/05/2024] [Accepted: 06/26/2024] [Indexed: 09/04/2024] Open
Abstract
Background Organ transplantation is a well-established intervention but is reliant on the donation of organs and tissues, mostly from deceased donors. The proportion of Australians proceeding to organ donation (OD) has increased, but the proportion of Indigenous Australians proceeding remains two-thirds that of non-Indigenous Australians. We sought to explore perceived barriers and enablers for the involvement of Indigenous peoples in the OD process. Methods Qualitative methodology centered around focus groups was used to capture the experiences and perspectives of Indigenous people regarding OD. A purposively sampled group of Aboriginal Liaison Officers working within the Alice Springs Hospital Intensive Care Unit (ASH ICU) participated in up to 6 focus groups during 2021 with subsequent thematic analysis of the enablers and barriers to Indigenous participation in the OD process. The ASH ICU is the only ICU servicing Central Australia, and 70% of admissions are Indigenous patients. Results Four primary themes emerged: OD is a new and culturally taboo topic; conversations related to OD are confronting; education is needed (both about OD and cultural education for clinicians); and lack of trust in the healthcare system. Conclusions There are cultural barriers to engaging in the OD process and clinicians need more training on the delivery of culturally safe communication is needed. Despite this, there was a recognition that OD is important. Education about OD needs to be place based, culturally and linguistically appropriate, informed by local knowledge, delivered in community, and occur before a family member is admitted to ICU.
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Affiliation(s)
- Paul Secombe
- Intensive Care Unit, Alice Springs Hospital, Alice Springs (Mparntwe), NT, Australia
- School of Medicine, Flinders University, Bedford Park, SA, Australia
- School of Public Health and Preventive Medicine, Monash University, Melbourne, Vic, Australia
- Australian and New Zealand Intensive Care Society Centre for Outcome and Resource Evaluation, Prahran, Vic, Australia
| | - Emslie Lankin
- Intensive Care Unit, Alice Springs Hospital, Alice Springs (Mparntwe), NT, Australia
| | - Rosalind Beadle
- Centre for Remote Health, Flinders University, Alice Springs (Mparntwe), NT, Australia
| | - Greg McAnulty
- Intensive Care Unit, Alice Springs Hospital, Alice Springs (Mparntwe), NT, Australia
- School of Medicine, Flinders University, Bedford Park, SA, Australia
| | - Alex Brown
- National Centre For Indigenous Genomics, College of Health and Medicine, Australian National University, Canberra, ACT, Australia
- Aboriginal Health Equity, South Australian Health and Medical Research Institute (SAHMRI), SA, Australia
| | - Michael Bailey
- School of Public Health and Preventive Medicine, Monash University, Melbourne, Vic, Australia
| | - Rebecca Schultz
- Public and Primary Health Care, Alice Springs (Mparntwe), NT, Australia
| | - David Pilcher
- School of Public Health and Preventive Medicine, Monash University, Melbourne, Vic, Australia
- Australian and New Zealand Intensive Care Society Centre for Outcome and Resource Evaluation, Prahran, Vic, Australia
- Department of Intensive Care, The Alfred Hospital, Prahran, Melbourne, Vic, Australia
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Hargovan S, Groch T, Brooks J, Sivalingam S, Bond T, Carter A. Indigenous Australians critically ill with sepsis: Characteristics, outcomes, and areas for improvement. Aust Crit Care 2024; 37:548-557. [PMID: 38216417 DOI: 10.1016/j.aucc.2023.11.007] [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: 04/10/2023] [Revised: 11/13/2023] [Accepted: 11/24/2023] [Indexed: 01/14/2024] Open
Abstract
BACKGROUND Aboriginal and Torres Strait Islander Australians have amongst the highest incidence of sepsis globally. OBJECTIVE The objective of this study was to describe the characteristics, short- and long-term outcomes of non-Indigenous, Aboriginal Australian and Torres Strait Islander Australians admitted with sepsis to an intensive care unit (ICU) to inform healthcare outcome improvement. METHODS A retrospective cohort study of 500 consecutive sepsis admissions to the Cairns Hospital ICU compared clinical characteristics, short-term (before ICU discharge) and long-term (2000 days posthospital discharge) outcomes. Cohort stratification was done by voluntary disclosure of Indigenous status. RESULTS Of the 442 individual admissions, 145 (33%) identified as Indigenous Australian. Indigenous and non-Indigenous Australians had similar admission Acute Physiology and Chronic Health Evaluation-3 scores (median [interquartile range]: 70 [52-87] vs. 69 [53-87], P = 0.87), but Indigenous patients were younger (53 [43-60] vs. 62 [52-73] years, P < 0.001) and were more likely to have chronic comorbidities such as type 2 diabetes (58% vs. 23%, P < 0.001), cardiovascular disease (40% vs 28%, P = 0.01), and renal disease (39% vs. 10%, P < 0.001). They also had more hazardous healthcare behaviours such as smoking (61% vs. 45%, P = 0.002) and excess alcohol consumption (40% vs. 18%, P < 0.001). Despite this, the case-fatality rate of Indigenous and non-Indigenous Australians before ICU discharge (13% vs. 12%, P = 0.75) and 2000 days post hospital discharge (25 % vs. 28 %, P = 0.40) was similar. Crucially, however, Indigenous Australians died younger both in the ICU (median [interquartile range] 54 (50-60) vs. 70 [61-76], P < 0.0001) and 2000 days post hospital discharge (58 [53-63] vs. 70 [63-77] years, P < 0.0001). CONCLUSIONS Although Indigenous Australians critically ill with sepsis have similar short and long-term mortality rates, they present to hospital, die in-hospital, and die post-discharge significantly younger. Unique cohort characteristics may explain these outcomes, and assist clinicians, researchers and policy-makers in targeting interventions to these characteristics to best reduce the burden of sepsis in this cohort and improve their healthcare outcomes.
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Affiliation(s)
- Satyen Hargovan
- Department of Medicine, Cairns Hospital and Hinterland Health Service, Cairns, Queensland, Australia; College of Medicine and Dentistry, James Cook University, Queensland, Australia.
| | - Taissa Groch
- Department of Anaesthetics, Cairns Hospital, Cairns, Queensland, Australia
| | - James Brooks
- Department of Anaesthetics, Gloucestershire Royal Hospital, Gloucester, United Kingdom
| | - Sayonne Sivalingam
- Department of Anaesthetics, Cairns Hospital, Cairns, Queensland, Australia
| | - Tatum Bond
- Department of Emergency Medicine, Cairns Hospital and Hinterland Health Service, Cairns, Queensland, Australia
| | - Angus Carter
- Department of Intensive Care Medicine, Bendigo Hospital, Victoria, Australia
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3
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Westgeest AC, Lambregts MMC, Ruffin F, Korn RE, Webster ME, Kair JL, Parsons JB, Maskarinec SA, Kaplan S, Dekkers OM, de Boer MGJ, Fowler VG, Thaden JT. Female Sex and Mortality in Patients with Staphylococcus aureus Bacteremia: A Systematic Review and Meta-analysis. JAMA Netw Open 2024; 7:e240473. [PMID: 38411961 PMCID: PMC10900971 DOI: 10.1001/jamanetworkopen.2024.0473] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/06/2023] [Accepted: 01/08/2024] [Indexed: 02/28/2024] Open
Abstract
Importance Staphylococcus aureus is the leading cause of death due to bacterial bloodstream infection. Female sex has been identified as a risk factor for mortality in S aureus bacteremia (SAB) in some studies, but not in others. Objective To determine whether female sex is associated with increased mortality risk in SAB. Data Sources MEDLINE, Embase, and Web of Science were searched from inception to April 26, 2023. Study Selection Included studies met the following criteria: (1) randomized or observational studies evaluating adults with SAB, (2) included 200 or more patients, (3) reported mortality at or before 90 days following SAB, and (4) reported mortality stratified by sex. Studies on specific subpopulations (eg, dialysis, intensive care units, cancer patients) and studies that included patients with bacteremia by various microorganisms that did not report SAB-specific data were excluded. Data Extraction and Synthesis Data extraction and quality assessment were performed by 1 reviewer and verified by a second reviewer. Risk of bias and quality were assessed with the Newcastle-Ottawa Quality Assessment Scale. Mortality data were combined as odds ratios (ORs). Main Outcome and Measures Mortality at or before 90-day following SAB, stratified by sex. Results From 5339 studies retrieved, 89 were included (132 582 patients; 50 258 female [37.9%], 82 324 male [62.1%]). Unadjusted mortality data were available from 81 studies (109 828 patients) and showed increased mortality in female patients compared with male patients (pooled OR, 1.12; 95% CI, 1.06-1.18). Adjusted mortality data accounting for additional patient characteristics and treatment variables were available from 32 studies (95 469 patients) and revealed a similarly increased mortality risk in female relative to male patients (pooled adjusted OR, 1.18; 95% CI, 1.11-1.27). No evidence of publication bias was encountered. Conclusions and Relevance In this systematic review and meta-analysis, female patients with SAB had higher mortality risk than males in both unadjusted and adjusted analyses. Further research is needed to study the potential underlying mechanisms.
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Affiliation(s)
- Annette C. Westgeest
- Division of Infectious Diseases, Duke University, Durham, North Carolina
- Department of Infectious Diseases, Leiden University Medical Center, Leiden, the Netherlands
| | - Merel M. C. Lambregts
- Department of Infectious Diseases, Leiden University Medical Center, Leiden, the Netherlands
| | - Felicia Ruffin
- Division of Infectious Diseases, Duke University, Durham, North Carolina
| | - Rachel E. Korn
- Division of Infectious Diseases, Duke University, Durham, North Carolina
| | - Maren E. Webster
- Division of Infectious Diseases, Duke University, Durham, North Carolina
| | - Jackson L. Kair
- Division of Infectious Diseases, Duke University, Durham, North Carolina
| | - Joshua B. Parsons
- Division of Infectious Diseases, Duke University, Durham, North Carolina
| | | | - Samantha Kaplan
- Medical Center Library and Archives, Duke University, Durham, North Carolina
| | - Olaf M. Dekkers
- Department of Clinical Epidemiology, Leiden University Medical Center, Leiden, the Netherlands
| | - Mark G. J. de Boer
- Department of Infectious Diseases, Leiden University Medical Center, Leiden, the Netherlands
- Department of Clinical Epidemiology, Leiden University Medical Center, Leiden, the Netherlands
| | - Vance G. Fowler
- Division of Infectious Diseases, Duke University, Durham, North Carolina
- Duke Clinical Research Institute, Durham, North Carolina
| | - Joshua T. Thaden
- Division of Infectious Diseases, Duke University, Durham, North Carolina
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Camilleri S, Tsai D, Langham F, Ullah S, Chiong F. Epidemiology, clinical outcomes and risk factors of third-generation cephalosporin-resistant Escherichia coli hospitalized infections in remote Australia-a case-control study. JAC Antimicrob Resist 2023; 5:dlad138. [PMID: 38115858 PMCID: PMC10729849 DOI: 10.1093/jacamr/dlad138] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2023] [Accepted: 12/01/2023] [Indexed: 12/21/2023] Open
Abstract
Background Incidence of third-generation cephalosporin-resistant (3GCR) Escherichia coli infections has increased in remote Australia from 2012 to 2018. Objectives To describe the epidemiology of 3GCR E. coli in Central Australia. Methods A case-control study was conducted in the primary Central Australian hospital. Patient characteristics, antibiotic usage and clinical outcomes were compared between adult hospitalizations with 3GCR and susceptible E. coli isolates in 2018-19. Poisson regression was used to compare the incidence of 3GCR hospitalizations between Indigenous and non-Indigenous individuals. Patient characteristics and antibiotic usage were tested for associations with 3GCR isolates using univariate analysis. Results A total of 889 E. coli isolates were identified, of which 187 (21%) were 3GCR. The incidence of 3GCR E. coli infection was 2.15 per 1000 person-years, with an incidence rate ratio of 6.8 (95% CI 4.6-10.1) between Indigenous and non-Indigenous individuals. When compared with the control group, 3GCR E. coli infections were associated with a higher Charlson comorbidity index (CCI ≥3 in 30.7% versus 15.0%, P < 0.001) and were more commonly healthcare associated (52.4% versus 26.7%, P < 0.001). A higher 1 year mortality was observed in the 3GCR group after adjustment for comorbidity (OR = 4.43, P = 0.002), but not at 30 days (2.4% versus 0.0%, P = 0.2). The 3GCR group used more antibiotics in the past 3 months (OR = 5.75, P < 0.001) and 12 months (OR = 3.65, P < 0.001). Conclusions 3GCR E. coli infections in remote Australia disproportionally affect Indigenous peoples and are associated with a high burden of comorbidities and antibiotic use. Strategies to enhance antimicrobial stewardship should be considered in this remote setting.
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Affiliation(s)
- Shayne Camilleri
- Department of Medicine, Alice Springs Hospital, Alice Springs, NT, Australia
- Department of Infectious Diseases, Austin Health, Melbourne, VIC, Australia
| | - Danny Tsai
- Flinders Health and Medical Research Institute, Flinders University, Adelaide, SA, Australia
- UQ Centre for Clinical Research, University of Queensland, Brisbane, QLD, Australia
- Pharmacy Department, Alice Springs Hospital, Alice Springs, NT, Australia
| | - Freya Langham
- Department of Medicine, Alice Springs Hospital, Alice Springs, NT, Australia
- Department of Infectious Diseases, Monash Health, Melbourne, VIC, Australia
| | - Shahid Ullah
- Flinders Health and Medical Research Institute, Flinders University, Adelaide, SA, Australia
- College of Medicine and Public Health, Flinders University, Adelaide, SA, Australia
| | - Fabian Chiong
- Department of Medicine, Alice Springs Hospital, Alice Springs, NT, Australia
- Department of Infectious Diseases, Canberra Hospital, Canberra, ACT, Australia
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Sood G, Dougherty G, Martin J, Beranek E, Landrum BM, Qasba S, Patel M, Wilson C, Miller A, Sulkowski M, Bennett RG, Sears CL, Schuster A, Galai N. Is neighborhood deprivation index a risk factor for Staphylococcus aureus infections? Am J Infect Control 2023; 51:1314-1320. [PMID: 37478909 DOI: 10.1016/j.ajic.2023.07.001] [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: 03/21/2023] [Revised: 07/01/2023] [Accepted: 07/03/2023] [Indexed: 07/23/2023]
Abstract
BACKGROUND We assessed the association between neighborhood area deprivation index (ADI) and community-onset (co) and hospital-onset (ho) Staphylococcus aureus infection. METHODS Demographic and clinical characteristics of patients admitted to 5 adult hospitals in the mid-Atlantic between 2016 and 2018 were obtained. The association of ADI with methicillin-resistant (MRSA) and methicillin-sensitive (MSSA) S aureus infections was assessed using logistic regression models adjusting for severity of illness and days of admission. RESULTS Overall, increasing ADI was associated with higher odds of co- and ho-MRSA and MSSA infection. In univariate analysis, Black race was associated with 44% greater odds of ho-MRSA infection (odds ratio [OR] 1.44; 95% CI 1.18-1.76) and Asian race (co-MRSA OR 0.355; Confidence Interval (CI) 0.240-0.525; co-MSSA OR 0.718; CI 0.557-0.928) and unknown race (co-MRSA OR 0.470; CI 0.365-0.606; co-MSSA OR 0.699; CI 0.577-0.848) was associated with lower odds of co-MSSA and co-MRSA infections. When both race and ADI were included in the model, Black race was no longer associated with ho-MRSA infections whereas Asian and unknown race remained associated with lower odds of co-MRSA and co-MSSA infection. In the multivariable logistic regression, ADI was consistently associated with increased odds of S aureus infection (co-MRSA OR 1.132; CI 1.064-1.205; co-MSSA OR 1.089; CI 1.030-1.15; ho-MRSA OR 1.29; CI 1.16-1.43: ho-MSSA OR 1.215; CI 1.096-1.346). CONCLUSIONS The area deprivation index is associated with community and hospital-onset MRSA and MSSA infections.
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Affiliation(s)
- Geeta Sood
- Department of Medicine, Johns Hopkins School of Medicine, Baltimore, MD.
| | - Geoff Dougherty
- Department of Epidemiology, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD; Health Services Cost Review Commission, MD
| | | | | | - B Mark Landrum
- Department of Medicine, Howard County General Hospital, Columbia, MD
| | - Sonia Qasba
- Department of Medicine, Suburban Hospital, Bethesda, MD
| | - Mayank Patel
- Johns Hopkins Bayview Medical Center, Baltimore, MD
| | | | | | - Mark Sulkowski
- Department of Medicine, Johns Hopkins School of Medicine, Baltimore, MD
| | - Richard G Bennett
- Department of Medicine, Johns Hopkins School of Medicine, Baltimore, MD
| | - Cynthia L Sears
- Department of Medicine, Johns Hopkins School of Medicine, Baltimore, MD
| | | | - Noya Galai
- Department of Epidemiology, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD; Department of Statistics, University of Haifa, Mt. Carmel, Israel
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6
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Ruffin F, Dagher M, Park LP, Wanda L, Hill-Rorie J, Mohnasky M, Marshall J, Souli M, Lantos P, Sharma-Kuinkel BK, Maskarinec SA, Eichenberger EM, Muiruri C, Broadnax B, Fowler VG. Black and White Patients With Staphylococcus aureus Bacteremia Have Similar Outcomes but Different Risk Factors. Clin Infect Dis 2023; 76:1260-1265. [PMID: 36373405 PMCID: PMC10319766 DOI: 10.1093/cid/ciac893] [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: 08/29/2022] [Revised: 10/28/2022] [Accepted: 11/10/2022] [Indexed: 11/16/2022] Open
Abstract
BACKGROUND Staphylococcus aureus bacteremia (SAB) disproportionately affects Black patients. The reasons for this disparity are unclear. METHODS We evaluated a prospectively ascertained cohort of patients with SAB from 1995 to 2020. Clinical characteristics, bacterial genotypes, and outcome were compared among Black and White patients with SAB. Multivariable logistic regression models were used to determine factors independently associated with the outcomes. RESULTS Among 3068 patients with SAB, 1107 (36%) were Black. Black patients were younger (median, 56 years vs 63 years; P < .001) and had higher rates of diabetes (47.5% vs 34.5%, P < .001), hemodialysis dependence (40.0% vs 7.3%, P < .001), and human immunodeficiency virus (6.4% vs 0.6%, P < .001). Black patients had higher rates of methicillin-resistant S. aureus (49.3% vs 44.9%, P = .020), including the USA300 hypervirulent clone (11.5% vs 8.4%, P = .007). White patients had higher rates of corticosteroid use (22.4% vs 15.8%, P < .0001) and surgery in the preceding 30 days (28.1% vs 18.7%, P < .001). Although the median Acute Physiology Score (APS) at the time of initial SAB diagnosis was significantly higher in Black patients (median APS, 9; interquartile range [IQR], 5-14 vs median APS, 7; IQR, 4-12; P < .001), race was not associated with 90-day mortality (risk ratio, 1.02; 95% confidence interval, .93-1.12), and rates of metastatic infection were lower among Black patients (37.2% vs 41.3% White, P = .029). CONCLUSIONS Despite differences in Black patients' higher APS on presentation and more risk factors, including a 5 times higher risk of hemodialysis dependence, 90-day mortality among Black and White patients with SAB was similar.
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Affiliation(s)
- Felicia Ruffin
- Division of Infectious Diseases, Duke University, Durham, North Carolina, USA
| | - Michael Dagher
- Division of Infectious Diseases, Duke University, Durham, North Carolina, USA
| | - Lawrence P Park
- Division of Infectious Diseases, Duke University, Durham, North Carolina, USA
- Duke Global Health Institute, Duke University, Durham, North Carolina, USA
| | - Lisa Wanda
- University of North Carolina School of Medicine, Chapel Hill, North Carolina, USA
- University of North Carolina Gillings School of Global Public Health, Chapel Hill, North Carolina, USA
| | | | - Michael Mohnasky
- University of North Carolina School of Medicine, Chapel Hill, North Carolina, USA
| | - Julia Marshall
- Division of Infectious Diseases, Duke University, Durham, North Carolina, USA
| | - Maria Souli
- Division of Infectious Diseases, Duke University, Durham, North Carolina, USA
- Duke Clinical Research Institute, Duke University, Durham, North Carolina, USA
| | - Paul Lantos
- Division of Infectious Diseases, Duke University, Durham, North Carolina, USA
| | | | - Stacey A Maskarinec
- Division of Infectious Diseases, Duke University, Durham, North Carolina, USA
| | | | - Charles Muiruri
- Department of Population Health Sciences, Duke University, Durham, North Carolina, USA
| | - Brittney Broadnax
- Division of Infectious Diseases, Duke University, Durham, North Carolina, USA
| | - Vance G Fowler
- Division of Infectious Diseases, Duke University, Durham, North Carolina, USA
- Duke Clinical Research Institute, Duke University, Durham, North Carolina, USA
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7
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Hindy JR, Quintero-Martinez JA, Lahr BD, DeSimone DC, Baddour LM. Staphylococcus aureus bacteraemia and mortality: a population-based study in Olmsted County, Minnesota, from 2006 to 2020. Infect Dis (Lond) 2023; 55:1-8. [PMID: 36151989 DOI: 10.1080/23744235.2022.2123561] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
OBJECTIVES To provide an evaluation of predictors of 6-month mortality in incident Staphylococcus aureus bacteraemia cases. METHODS A retrospective population-based study of 541 adult residents of Olmsted County, MN with monomicrobial S. aureus bacteraemia from 1 January 2006 through 31 December 2020. Multivariable Cox regression was used to investigate risk factors of 6-month mortality. RESULTS The median (interquartile range [IQR]) age of 541 patients with S. aureus bacteraemia was 66.8 (54.4-78.5) years and 39.6% were female. The median (IQR) Charlson Comorbidity Index was 6 (3-9). Overall, 144 patients died during the six-month period following their initial episode (30-day and 6-month mortality = 16.5% and 26.7%, respectively). In a multivariable analysis, older age, ICU admission, and unknown source of infection were significant predictors of increased 6-month mortality. In contrast, having an infectious diseases (ID) consultation was associated with reduced mortality in the first 2 weeks of follow-up. Secondary analyses revealed an early benefit of ID consultation during the first 30 days of follow-up and that infective endocarditis was an additional predictor of 6-month mortality. CONCLUSIONS To our knowledge, this investigation represents the only US population-based study evaluating predictors of mortality in patients with S. aureus bacteraemia. The finding of a short-term survival benefit associated with early ID consultation may be due to more extensive diagnostic efforts.
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Affiliation(s)
- Joya-Rita Hindy
- Division of Infectious Diseases, Department of Medicine, College of Medicine, Mayo Clinic, Rochester, MN, USA
| | - Juan A Quintero-Martinez
- Division of Infectious Diseases, Department of Medicine, College of Medicine, Mayo Clinic, Rochester, MN, USA
| | - Brian D Lahr
- Division of Clinical Trials & Biostatistics, Department of Quantitative Health Sciences, College of Medicine, Mayo Clinic, Rochester, MN, USA
| | - Daniel C DeSimone
- Division of Infectious Diseases, Department of Medicine, College of Medicine, Mayo Clinic, Rochester, MN, USA.,Department of Cardiovascular Disease, College of Medicine, Mayo Clinic, Rochester, MN, USA
| | - Larry M Baddour
- Division of Infectious Diseases, Department of Medicine, College of Medicine, Mayo Clinic, Rochester, MN, USA.,Department of Cardiovascular Disease, College of Medicine, Mayo Clinic, Rochester, MN, USA
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8
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Hindy JR, Quintero-Martinez JA, Lee AT, Scott CG, Gerberi DJ, Mahmood M, DeSimone DC, Baddour LM. Incidence Trends and Epidemiology of Staphylococcus aureus Bacteremia: A Systematic Review of Population-Based Studies. Cureus 2022; 14:e25460. [PMID: 35774691 PMCID: PMC9239286 DOI: 10.7759/cureus.25460] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/29/2022] [Indexed: 11/06/2022] Open
Abstract
OBJECTIVES To determine incidence trends of Staphylococcus aureus bacteremia (SAB) from population-based studies from multiple countries. METHODS A contemporary systematic review was conducted using Ovid Cochrane Central Register of Controlled Trials (1991+), Ovid Embase (1974+), Ovid Medical Literature Analysis and Retrieval System Online (MEDLINE) (1946+ including epub ahead of print, in-process & other non-indexed citations), and Web of Science Core Collection (Science Citation Index Expanded 1975+ and Emerging Sources Citation Index 2015+). Two authors (J.R.H. and J.A.Q.M.) independently reviewed all studies and included those that reported population-based incidence of SAB in patients aged 18 years and older. RESULTS Twenty-six studies met inclusion criteria with the highest number (n=6) of studies conducted in Canada. The incidence of SAB ranged from 9.3 to 65 cases/100,000/year. The median age of patients with SAB ranged from 62 to 72 years and SAB cases were more commonly observed in men than in women. The most common infection sources were intravascular catheters and skin and soft tissue infections. SAB incidence trends demonstrated high variability for geographic regions and calendar years. Overall, there was no change in the incidence trend across all studies during the past two decades. CONCLUSION Multiple factors, both pros, and cons are likely responsible for the overall stable SAB incidence in countries included in this systematic review. Some of these factors vary in geographic location and prompt additional investigations from countries not included in the current review so that a more global characterization is defined.
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Forrester JD, Cao S, Schaps D, Liou R, Patil A, Stave C, Sokolow SH, Leo GD. Influence of Socioeconomic and Environmental Determinants of Health on Human Infection and Colonization with Antibiotic-Resistant and Antibiotic-Associated Pathogens: A Scoping Review. Surg Infect (Larchmt) 2022; 23:209-225. [DOI: 10.1089/sur.2021.348] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Affiliation(s)
- Joseph D. Forrester
- Division of General Surgery, Department of Surgery, Stanford University, Stanford, California, USA
| | - Siqi Cao
- School of Medicine, Stanford University, Stanford, California, USA
| | - Diego Schaps
- School of Medicine, Duke University, Durham, North Carolina, USA
| | - Raymond Liou
- School of Medicine, Stanford University, Stanford, California, USA
| | | | - Christopher Stave
- School of Medicine, Stanford University, Stanford, California, USA
- Lane Medical Library, Stanford University, Stanford, California, USA
| | - Susanne H. Sokolow
- Woods Institute for the Environment, Stanford University, Stanford, California, USA
- Marine Science Institute, University of California Santa Barbara, Santa Barbara, California, USA
| | - Giulio De Leo
- Woods Institute for the Environment, Stanford University, Stanford, California, USA
- Hopkins Marine Station, Stanford University, Stanford, California, USA
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10
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Campbell AJ, Daley DA, Bell JM, Pang S, Coombs GW, Carapetis JR, Bowen AC, Blyth CC. Progress towards a coordinated, national paediatric antimicrobial resistance surveillance programme: Staphylococcus aureus, enterococcal and Gram-negative bacteraemia in Australia. J Antimicrob Chemother 2021; 75:1639-1644. [PMID: 32155261 DOI: 10.1093/jac/dkaa065] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2019] [Revised: 01/29/2020] [Accepted: 02/03/2020] [Indexed: 11/13/2022] Open
Abstract
BACKGROUND There is increasing knowledge of antimicrobial usage in children yet limited availability of nationally representative paediatric-specific data on antimicrobial resistance. OBJECTIVES Paediatric data from this national surveillance programme are presented to explore differences between childhood and adult bloodstream infections and antimicrobial resistance surveillance. METHODS Using information collected from a prospective coordinated antimicrobial resistance surveillance programme, children ≤18 years and adults >18 years with a positive blood culture for Staphylococcus aureus, Enterococcus spp. or Gram-negative spp. presenting to one of 34 Australian hospitals during 2013-16 were evaluated. Consistent methodologies for key sepsis pathogens were employed and a comparative analysis between children and adults was conducted. RESULTS There are stark contrasts between children and adults in this national antimicrobial resistance (AMR) data set. Notable differences include lower rates of AMR, different clinical and molecular phenotypes and lower mortality amongst children. The burden of Gram-negative resistance is disproportionately experienced in children, with higher odds of death with an ESBL versus non-ESBL bacteraemia in comparison with adults. CONCLUSIONS These data support that children are not just 'little adults' in the AMR era, and analyses by age group are important to detect differences in antibiotic susceptibility, clinical phenotype and genetic virulence factors. Antimicrobial surveillance incorporated into routine laboratory practice is vital to inform an array of wider applications including antimicrobial guidelines, stewardship and direction for prioritization of novel antimicrobial development.
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Affiliation(s)
- Anita J Campbell
- Department of Infectious Diseases, Perth Children's Hospital, Nedlands, Western Australia, Australia.,Wesfarmers Centre of Vaccines and Infectious Diseases, Telethon Kids Institute, Perth, Western Australia, Australia.,University of Western Australia, School of Medicine, Perth, Western Australia, Australia
| | - Denise A Daley
- Department of Microbiology, PathWest Laboratory Medicine, QEII Medical Centre, Royal Perth Hospital and Fiona Stanley Hospital, Western Australia, Australia.,The Australian Group on Antimicrobial Resistance (AGAR), Australia
| | - Jan M Bell
- The University of Adelaide, Adelaide, South Australia, Australia
| | - Stanley Pang
- Department of Microbiology, PathWest Laboratory Medicine, QEII Medical Centre, Royal Perth Hospital and Fiona Stanley Hospital, Western Australia, Australia.,Antimicrobial Resistance and Infectious Diseases Research (AMRID) Laboratory, Murdoch University, Perth, Western Australia, Australia
| | - Geoffrey W Coombs
- Department of Microbiology, PathWest Laboratory Medicine, QEII Medical Centre, Royal Perth Hospital and Fiona Stanley Hospital, Western Australia, Australia.,Antimicrobial Resistance and Infectious Diseases Research (AMRID) Laboratory, Murdoch University, Perth, Western Australia, Australia
| | - Jonathan R Carapetis
- Department of Infectious Diseases, Perth Children's Hospital, Nedlands, Western Australia, Australia.,Wesfarmers Centre of Vaccines and Infectious Diseases, Telethon Kids Institute, Perth, Western Australia, Australia.,University of Western Australia, School of Medicine, Perth, Western Australia, Australia
| | - Asha C Bowen
- Department of Infectious Diseases, Perth Children's Hospital, Nedlands, Western Australia, Australia.,Wesfarmers Centre of Vaccines and Infectious Diseases, Telethon Kids Institute, Perth, Western Australia, Australia.,University of Western Australia, School of Medicine, Perth, Western Australia, Australia
| | - Christopher C Blyth
- Department of Infectious Diseases, Perth Children's Hospital, Nedlands, Western Australia, Australia.,Wesfarmers Centre of Vaccines and Infectious Diseases, Telethon Kids Institute, Perth, Western Australia, Australia.,University of Western Australia, School of Medicine, Perth, Western Australia, Australia.,Department of Microbiology, PathWest Laboratory Medicine, QEII Medical Centre, Royal Perth Hospital and Fiona Stanley Hospital, Western Australia, Australia
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11
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Thean LJ, Jenney A, Engelman D, Romani L, Wand H, Mani J, Paka J, Cua T, Taole S, Soqo V, Sahukhan A, Kama M, Tuicakau M, Kado J, Carvalho N, Whitfeld M, Kaldor J, Steer AC. Prospective surveillance for invasive Staphylococcus aureus and group A Streptococcus infections in a setting with high community burden of scabies and impetigo. Int J Infect Dis 2021; 108:333-339. [PMID: 34022330 DOI: 10.1016/j.ijid.2021.05.041] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2021] [Revised: 05/12/2021] [Accepted: 05/15/2021] [Indexed: 12/21/2022] Open
Abstract
BACKGROUND Invasive Staphylococcus aureus (iSA) and group A Streptococcus (iGAS) impose significant health burdens globally. Both bacteria commonly cause skin and soft tissue infections (SSTIs), which can result in invasive disease. Understanding of the incidence of iSA and iGAS remains limited in settings with a high SSTI burden. METHODS Prospective surveillance for admissions with iSA or iGAS was conducted at the referral hospital in Fiji's Northern Division over 48 weeks between July 2018 and June 2019. RESULTS There were 55 admissions for iSA and 15 admissions for iGAS (incidence 45.2 and 12.3 per 100,000 person-years, respectively). The highest incidence was found in patients aged ≥65 years (59.6 per 100,000 person-years for iSA and iGAS). The incidence of iSA was higher in indigenous Fijians (iTaukei) (71.1 per 100,000 person-years) compared with other ethnicities (incidence rate ratio 9.7, 95% confidence interval 3.5-36.9). SSTIs were found in the majority of cases of iSA (75%) and iGAS (53.3%). Thirteen of the 14 iGAS strains isolated belonged to emm cluster D (n = 5) or E (n = 8). The case fatality rate was high for both iSA (10.9%) and iGAS (33.3%). CONCLUSIONS The incidence of iSA and iGAS in Fiji is very high. SSTIs are common clinical foci for both iSA and iGAS. Both iSA and iGAS carry a substantial risk of death. Improved control strategies are needed to reduce the burden of iSA and iGAS in Fiji.
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Affiliation(s)
- Li Jun Thean
- Tropical Diseases Group, Murdoch Children's Research Institute, Parkville, Victoria, Australia; Department of Paediatrics, University of Melbourne, Parkville, Victoria, Australia.
| | - Adam Jenney
- College of Medicine, Nursing and Health Sciences, Fiji National University, Suva, Fiji
| | - Daniel Engelman
- Tropical Diseases Group, Murdoch Children's Research Institute, Parkville, Victoria, Australia; Department of Paediatrics, University of Melbourne, Parkville, Victoria, Australia; Melbourne Children's Global Health, Melbourne Children's Campus, The Royal Children's Hospital, Parkville, Victoria, Australia
| | - Lucia Romani
- Kirby Institute, University of New South Wales, Kensington, New South Wales, Australia
| | - Handan Wand
- Kirby Institute, University of New South Wales, Kensington, New South Wales, Australia
| | - Jyotishna Mani
- Tropical Diseases Group, Murdoch Children's Research Institute, Parkville, Victoria, Australia
| | - Jessica Paka
- Tropical Diseases Group, Murdoch Children's Research Institute, Parkville, Victoria, Australia
| | - Tuliana Cua
- Tropical Diseases Group, Murdoch Children's Research Institute, Parkville, Victoria, Australia
| | - Sera Taole
- Tropical Diseases Group, Murdoch Children's Research Institute, Parkville, Victoria, Australia
| | - Vika Soqo
- Ministry of Health and Medical Services, Suva, Fiji
| | | | - Mike Kama
- Ministry of Health and Medical Services, Suva, Fiji
| | | | - Joseph Kado
- Ministry of Health and Medical Services, Suva, Fiji; Wesfarmers Centre for Vaccines and Infectious Diseases, Telethon Kids Institute, Nedlands, Western Australia, Australia
| | - Natalie Carvalho
- School of Population and Global Health, University of Melbourne, Carlton, Victoria, Australia
| | - Margot Whitfeld
- Department of Dermatology, St. Vincent's Hospital, Darlinghurst, New South Wales, Australia; School of Medicine, University of New South Wales, Kensington, New South Wales, Australia
| | - John Kaldor
- Kirby Institute, University of New South Wales, Kensington, New South Wales, Australia
| | - Andrew C Steer
- Tropical Diseases Group, Murdoch Children's Research Institute, Parkville, Victoria, Australia; Department of Paediatrics, University of Melbourne, Parkville, Victoria, Australia; Melbourne Children's Global Health, Melbourne Children's Campus, The Royal Children's Hospital, Parkville, Victoria, Australia
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12
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Evaluating antimicrobial prescribing practice in Australian remote primary healthcare clinics. Infect Dis Health 2021; 26:173-181. [PMID: 33744202 DOI: 10.1016/j.idh.2021.02.001] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2020] [Revised: 02/16/2021] [Accepted: 02/17/2021] [Indexed: 12/19/2022]
Abstract
BACKGROUND Inappropriate antimicrobial prescribing contributes to the emergence of antimicrobial resistance. Gaps exist in the understanding of antimicrobial prescribing in the remote setting. We aimed to assess adherence to guidelines and appropriateness of antimicrobial prescribing in Central Australia. METHODS A retrospective study assessing antimicrobial prescriptions in ten Aboriginal clinics (three in remote communities and seven in regional centre) using a validated evaluation tool. Antimicrobials prescribed between 1 January-31 December 2018 were randomly selected for inclusion into the study. The main outcome measures were the rates of guideline adherence and inappropriate prescribing. RESULTS A total of 180 prescriptions were included (96.1% Aboriginal, 32.2% male). Ninety-nine (55.0%) prescriptions were written by general practitioners (GPs), 57 (31.7%) by nurses and 24 (13.3%) by others. Forty-three (25.7%) assessable prescriptions were deemed inappropriate and 75 (44.4%) did not adhere to guidelines. Prescriptions written by GPs were less likely to adhere to guidelines, particularly GPs located in remote communities. The most common reasons for inappropriate prescribing were incorrect dosage/frequency and antimicrobial not indicated. Skin and soft-tissue infection was the commonest indication, with 29 of 41 (70.7%) prescriptions deemed appropriate. Prescriptions for lower respiratory-tract infection had the lowest rate of appropriateness, with one of seven prescriptions deemed appropriate (14.3%). Antimicrobials with the lowest rate of appropriateness were ciprofloxacin, amoxicillin-clavulanate and cefalexin, at 50%, 56%, and 62%, respectively. CONCLUSION A quarter of antimicrobial prescriptions written in select remote central Australian Aboriginal primary healthcare clinics were deemed inappropriate. The implementation of a comprehensive antimicrobial stewardship program is recommended.
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13
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Minejima E, Wang J, Boettcher S, Liu L, Lou M, She RC, Wenzel SL, Spellberg B, Wong-Beringer A. Distance Between Home and the Admitting Hospital and Its Effect on Survival of Low Socioeconomic Status Population With Staphylococcus aureus Bacteremia. Public Health Rep 2021; 137:110-119. [PMID: 33715536 PMCID: PMC8721749 DOI: 10.1177/0033354921994897] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023] Open
Abstract
OBJECTIVE Bacteremia is the presence of bacteria in the bloodstream. The objective of this study was to determine the relationship between low socioeconomic status (SES) and the epidemiology, process of care, and outcomes of patients with Staphylococcus aureus bacteremia (SAB). METHODS We conducted a multicenter, retrospective, cohort study that evaluated adult patients with SAB in 3 Los Angeles County hospitals from July 15, 2012, through May 31, 2018. We determined SES (low SES, intermediate SES, and high SES) for each patient and compared sociodemographic and epidemiologic characteristics, management of care received by patients with SAB (ie, process of care), and outcomes. We used a Cox proportional hazards model to determine predictors of 30-day mortality for each SES group. RESULTS Of 915 patients included in the sample, 369 (40%) were in the low-SES group, 294 (32%) in the intermediate-SES group, and 252 (28%) in the high-SES group. Most significant predictors of 30-day mortality in the Cox proportional hazards model were admission to an intensive care unit (hazard ratio [HR] = 9.04; 95% CI, 4.26-19.14), Pitt bacteremia score ≥4 indicating critical illness (HR = 4.30; 95% CI, 2.49-7.44), having ≥3 comorbidities (HR = 2.05; 95% CI, 1.09-3.85), and advanced age (HR = 1.03; 95% CI, 1.01-1.05). Distance between home and admitting hospital affected mortality only in the low-SES group (HR = 1.02; 95% CI, 1.00-1.02). CONCLUSIONS SES did not independently affect the outcome of SAB; however, the farther the patient's residence from the hospital, the greater the negative effect on survival in a low-SES population. Our findings underscore the need to develop multipronged, targeted public health efforts for populations that have transportation barriers to health care.
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Affiliation(s)
- Emi Minejima
- Department of Clinical Pharmacy, University of Southern California School of Pharmacy, Los Angeles, CA, USA,Los Angeles County–University of Southern California Medical Center, Los Angeles, CA, USA
| | - Joshua Wang
- Department of Clinical Pharmacy, University of Southern California School of Pharmacy, Los Angeles, CA, USA
| | - Stormmy Boettcher
- Department of Clinical Pharmacy, University of Southern California School of Pharmacy, Los Angeles, CA, USA
| | - Lihua Liu
- Department of Preventive Medicine, Keck School of Medicine, University of Southern California, Los Angeles, CA, USA
| | - Mimi Lou
- Department of Clinical Pharmacy, University of Southern California School of Pharmacy, Los Angeles, CA, USA
| | - Rosemary C. She
- Department of Pathology, Keck School of Medicine, University of Southern California, Los Angeles, CA, USA
| | - Suzanne L. Wenzel
- Department of Adults and Healthy Aging, University of Southern California School of Social Work, Los Angeles, CA, USA
| | - Brad Spellberg
- Los Angeles County–University of Southern California Medical Center, Los Angeles, CA, USA
| | - Annie Wong-Beringer
- Department of Clinical Pharmacy, University of Southern California School of Pharmacy, Los Angeles, CA, USA,Department of Pharmacy, Huntington Hospital, Pasadena, CA, USA,Annie Wong-Beringer, PharmD, University of Southern California School of Pharmacy, 1985 Zonal Ave, Los Angeles, CA 90033, USA.
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14
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Majoni SW, Lawton PD, Rathnayake G, Barzi F, Hughes JT, Cass A. Narrative Review of Hyperferritinemia, Iron Deficiency, and the Challenges of Managing Anemia in Aboriginal and Torres Strait Islander Australians With CKD. Kidney Int Rep 2021; 6:501-512. [PMID: 33615076 PMCID: PMC7879094 DOI: 10.1016/j.ekir.2020.10.035] [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: 08/17/2020] [Accepted: 10/27/2020] [Indexed: 12/16/2022] Open
Abstract
Aboriginal and Torres Strait Islander Australians (Indigenous Australians) suffer some of the highest rates of chronic kidney disease (CKD) in the world. Among Indigenous Australians in remote areas of the Northern Territory, prevalence rates for renal replacement therapy (RRT) are up to 30 times higher than national prevalence. Anemia among patients with CKD is a common complication. Iron deficiency is one of the major causes. Iron deficiency is also one of the key causes of poor response to the mainstay of anemia therapy with erythropoiesis-stimulating agents (ESAs). Therefore, the effective management of anemia in people with CKD is largely dependent on effective identification and correction of iron deficiency. The current identification of iron deficiency in routine clinical practice is dependent on 2 surrogate markers of iron status: serum ferritin concentration and transferrin saturation (TSAT). However, questions exist regarding the use of serum ferritin concentration in people with CKD because it is an acute-phase reactant that can be raised in the context of acute and chronic inflammation. Serum ferritin concentration among Indigenous Australians receiving RRT is often markedly elevated and falls outside reference ranges within most national and international guidelines for iron therapy for people with CKD. This review explores published data on the challenges of managing anemia in Indigenous people with CKD and the need for future research on the efficacy and safety of treatment of anemia of CKD in patients with high ferritin and evidence iron deficiency.
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Affiliation(s)
- Sandawana William Majoni
- Department of Nephrology, Division of Medicine, Royal Darwin Hospital, Darwin, Northern Territory, Australia
- Flinders University and Northern Territory Medical Program, Royal Darwin Hospital Campus, Darwin, Northern Territory, Australia
- Wellbeing and Preventable Chronic Diseases, Menzies School of Health Research, Charles Darwin University, Northern Territory, Australia
| | - Paul D. Lawton
- Department of Nephrology, Division of Medicine, Royal Darwin Hospital, Darwin, Northern Territory, Australia
- Wellbeing and Preventable Chronic Diseases, Menzies School of Health Research, Charles Darwin University, Northern Territory, Australia
| | - Geetha Rathnayake
- Flinders University and Northern Territory Medical Program, Royal Darwin Hospital Campus, Darwin, Northern Territory, Australia
- Chemical Pathology–Territory Pathology, Department of Health, Northern Territory Government, Northern Territory, Australia
| | - Federica Barzi
- Wellbeing and Preventable Chronic Diseases, Menzies School of Health Research, Charles Darwin University, Northern Territory, Australia
| | - Jaquelyne T. Hughes
- Department of Nephrology, Division of Medicine, Royal Darwin Hospital, Darwin, Northern Territory, Australia
- Wellbeing and Preventable Chronic Diseases, Menzies School of Health Research, Charles Darwin University, Northern Territory, Australia
| | - Alan Cass
- Wellbeing and Preventable Chronic Diseases, Menzies School of Health Research, Charles Darwin University, Northern Territory, Australia
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15
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Mosselhy DA, Assad M, Sironen T, Elbahri M. Nanotheranostics: A Possible Solution for Drug-Resistant Staphylococcus aureus and their Biofilms? NANOMATERIALS (BASEL, SWITZERLAND) 2021; 11:E82. [PMID: 33401760 PMCID: PMC7824312 DOI: 10.3390/nano11010082] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/20/2020] [Revised: 12/24/2020] [Accepted: 12/30/2020] [Indexed: 12/14/2022]
Abstract
Staphylococcus aureus is a notorious pathogen that colonizes implants (orthopedic and breast implants) and wounds with a vicious resistance to antibiotic therapy. Methicillin-resistant S. aureus (MRSA) is a catastrophe mainly restricted to hospitals and emerged to community reservoirs, acquiring resistance and forming biofilms. Treating biofilms is problematic except via implant removal or wound debridement. Nanoparticles (NPs) and nanofibers could combat superbugs and biofilms and rapidly diagnose MRSA. Nanotheranostics combine diagnostics and therapeutics into a single agent. This comprehensive review is interpretative, utilizing mainly recent literature (since 2016) besides the older remarkable studies sourced via Google Scholar and PubMed. We unravel the molecular S. aureus resistance and complex biofilm. The diagnostic properties and detailed antibacterial and antibiofilm NP mechanisms are elucidated in exciting stories. We highlight the challenges of bacterial infections nanotheranostics. Finally, we discuss the literature and provide "three action appraisals". (i) The first appraisal consists of preventive actions (two wings), avoiding unnecessary hospital visits, hand hygiene, and legislations against over-the-counter antibiotics as the general preventive wing. Our second recommended preventive wing includes preventing the adverse side effects of the NPs from resistance and toxicity by establishing standard testing procedures. These standard procedures should provide breakpoints of bacteria's susceptibility to NPs and a thorough toxicological examination of every single batch of synthesized NPs. (ii) The second appraisal includes theranostic actions, using nanotheranostics to diagnose and treat MRSA, such as what we call "multifunctional theranostic nanofibers. (iii) The third action appraisal consists of collaborative actions.
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Affiliation(s)
- Dina A. Mosselhy
- Nanochemistry and Nanoengineering, Department of Chemistry and Materials Science, School of Chemical Engineering, Aalto University, 02150 Espoo, Finland;
- Microbiological Unit, Fish Diseases Department, Animal Health Research Institute, Dokki, Giza 12618, Egypt
- Department of Virology, Faculty of Medicine, University of Helsinki, P.O. Box 21, 00014 Helsinki, Finland;
- Department of Veterinary Biosciences, Faculty of Veterinary Medicine, University of Helsinki, P.O. Box 66, 00014 Helsinki, Finland
| | - Mhd Assad
- Nanochemistry and Nanoengineering, Department of Chemistry and Materials Science, School of Chemical Engineering, Aalto University, 02150 Espoo, Finland;
| | - Tarja Sironen
- Department of Virology, Faculty of Medicine, University of Helsinki, P.O. Box 21, 00014 Helsinki, Finland;
- Department of Veterinary Biosciences, Faculty of Veterinary Medicine, University of Helsinki, P.O. Box 66, 00014 Helsinki, Finland
| | - Mady Elbahri
- Nanochemistry and Nanoengineering, Department of Chemistry and Materials Science, School of Chemical Engineering, Aalto University, 02150 Espoo, Finland;
- Nanochemistry and Nanoengineering, Institute for Materials Science, Faculty of Engineering, Kiel University, 24143 Kiel, Germany
- Center for Nanotechnology, Zewail City of Science and Technology, Sheikh Zayed District, Giza 12588, Egypt
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16
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Lang R, Gill MJ, Vu Q, Viczko J, Naugler C, Church D. Longitudinal evaluation of risk factors and outcomes of blood stream infections due to Staphylococcus species in persons with HIV: An observational cohort study. EClinicalMedicine 2021; 31:100675. [PMID: 33554080 PMCID: PMC7846664 DOI: 10.1016/j.eclinm.2020.100675] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/25/2020] [Revised: 11/20/2020] [Accepted: 11/20/2020] [Indexed: 11/19/2022] Open
Abstract
BACKGROUND Staphylococcal blood stream infections (SBSI) are a significant cause of morbidity and mortality, however there is little data on such infections in persons with HIV (PWH) in the combination antiretroviral therapy era, particularly when divided by species; methicillin-sensitive (MSSA) and methicillin-resistant Staphylococcus aureus (MRSA) and coagulase-negative Staphylococcus (CoNS). METHODS Using linked longitudinal clinical and microbiologic databases, all cases of SBSI in PWH accessing care at Southern Alberta Clinic were identified and demographic features and outcomes characterized. We compared participants with SBSI to those with no SBSI and determined the 1-year all-cause mortality following SBSI and longitudinally over the study period. FINDINGS From 2000 to 2018, 130 SBSI occurred in 95 PWH over 21,526 patient-years follow-up. MSSA caused 38.4%, MRSA 26.1% and CoNS 35.3% of SBSI. Highest risks for SSBI were in Hepatitis C coinfection, low CD4 nadir, Indigenous/Metis ethnicity and in persons who use injection drugs (PWID). During follow-up, 423 deaths occurred in all PWH. Mortality rates for PWH with SBSI was 74.9/1000 patient-years (95% CI 59.2-94.9) compared with no SBSI 16.0/1000 patient-years (95% CI 14.4-17.7). The mortality Hazard Ratio was 2.61(95% CI 1.95-3.49, P= <0.001) for SBSI compared to no SBSI, following adjusting for confounding. Seventy deaths occurred in persons with SBSI with 40% in the first year. Higher 1-year mortality rates occurred in hospital-acquired infections. INTERPRETATION Incidence rates of SBSI are high in PWH, with identified characteristics that further increase this risk. PWH who experience SBSI have a significant mortality risk within the first year of follow-up, however they also have greater long-term all-cause mortality compared to those with no SBSI. Further investigation is needed in PWH evaluating host, environment and pathogen differences that lead to differing rates of SBSI and mortality seen here. FUNDING No funding was received for this work.
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Affiliation(s)
- Raynell Lang
- Department of Medicine, Cumming School of Medicine, University of Calgary, Calgary, Alta, Canada
| | - M. John Gill
- Department of Medicine, Cumming School of Medicine, University of Calgary, Calgary, Alta, Canada
- Department of Pathology & Laboratory Medicine, Cumming School of Medicine, University of Calgary, Calgary, Alta, Canada
- Southern Alberta HIV Clinic, Alberta Health Services, Calgary, Alta, Canada
| | - Quang Vu
- Southern Alberta HIV Clinic, Alberta Health Services, Calgary, Alta, Canada
| | - Jeannine Viczko
- Department of Pathology & Laboratory Medicine, Cumming School of Medicine, University of Calgary, Calgary, Alta, Canada
| | - Chris Naugler
- Department of Pathology & Laboratory Medicine, Cumming School of Medicine, University of Calgary, Calgary, Alta, Canada
- Department of Community Health Sciences, Cumming School of Medicine, University of Calgary, Calgary, Alta, Canada
| | - Deirdre Church
- Department of Medicine, Cumming School of Medicine, University of Calgary, Calgary, Alta, Canada
- Department of Pathology & Laboratory Medicine, Cumming School of Medicine, University of Calgary, Calgary, Alta, Canada
- Corresponding author at: Department of Pathology & Laboratory Medicine, Cumming School of Medicine, University of Calgary, 9- 3535 Research Rd NW, Calgary, Alta T2L2K8, Canada.
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17
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Haggett MG, Tait CP. Five years of dermatological disease requiring specialist care in the Kimberley region of Western Australia. Australas J Dermatol 2020; 62:157-161. [PMID: 33247840 DOI: 10.1111/ajd.13500] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2020] [Revised: 09/22/2020] [Accepted: 10/05/2020] [Indexed: 11/29/2022]
Abstract
BACKGROUND Epidemiological studies that document the burden of skin diseases in rural and remote regions of Australia are vital in ensuring proper health-care planning and management. The purpose of this study was to establish the burden of skin disease requiring specialist dermatology input for both the Aboriginal and non-Aboriginal communities in the Kimberley. METHODS A retrospective audit of all outpatient encounters with the primary Country Health Service visiting dermatology specialist in the Kimberley region between January 2012 and January 2017. RESULTS A total of 2281 encounters were recorded with 1459 unique patients seen. The most common disease categories seen in the general population were premalignant and malignant skin disease (40%), eczema and dermatitis (17%) and benign skin neoplasms (12%). Among Aboriginal patients, the most common conditions were eczema and dermatitis (19%), autoimmune connective tissue disease/rheumatological and autoinflammatory syndromes (17%), adnexal diseases (10%), pigmentary disorders (7%) and benign skin neoplasms (7%). CONCLUSION These findings can be used to enhance, direct and plan dermatological services for both the Aboriginal and non-Aboriginal populations in the Kimberley region.
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Affiliation(s)
| | - Clare P Tait
- Dermatology Specialist Group, Perth, Western Australia, Australia
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18
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Douglas NM, Hennessy JN, Currie BJ, Baird RW. Trends in Bacteremia Over 2 Decades in the Top End of the Northern Territory of Australia. Open Forum Infect Dis 2020; 7:ofaa472. [PMID: 33204758 PMCID: PMC7651056 DOI: 10.1093/ofid/ofaa472] [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: 07/28/2020] [Accepted: 10/01/2020] [Indexed: 11/14/2022] Open
Abstract
Background Information on the local distribution of bloodstream pathogens helps to guide empiric antibiotic selection and can generate hypotheses regarding the effectiveness of infection prevention practices. We assessed trends in bacterial blood culture isolates at Royal Darwin Hospital (RDH) in the Northern Territory of Australia between 1999 and 2019. Methods Species identification was extracted for all blood cultures first registered at RDH. Thirteen organisms were selected for focused analysis. Trends were examined graphically and using univariable linear regression. Results Between 1999 and 2019, 189 577 blood cultures from 65 276 patients were processed at RDH. Overall, 6.72% (12 747/189 577) of blood cultures contained a bacterial pathogen. Staphylococcus aureus was the most common cause of bacteremia during the first decade, with an estimated incidence of 96.6 episodes per 100 000 person-years (py; 95% CI, 72.2-121/100 000 py) in 1999. Since 2009, S. aureus bacteremia has declined markedly, whereas there has been an inexorable rise in Escherichia coli bacteremia (30.1 to 74.7/100 000 py between 1999 and 2019; P < .001), particularly in older adults. Since 2017, E. coli has been more common than S. aureus. Rates of Streptococcus pneumoniae bacteremia have reduced dramatically in children, while Burkholderia pseudomallei remained the fourth most common bloodstream isolate overall. Conclusions The incidence of S. aureus bacteremia, though high by international standards, is declining at RDH, possibly in part due to a sustained focus on both community and hospital infection prevention practices. Gram-negative bacteremia, particularly due to E. coli, is becoming more common, and the trend will likely continue given our aging population.
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Affiliation(s)
- Nicholas M Douglas
- Global and Tropical Health Division, Menzies School of Health Research, Charles Darwin University, Darwin, Northern Territory, Australia.,Territory Pathology, Royal Darwin Hospital, Darwin, Northern Territory, Australia.,Department of Infectious Diseases, Royal Darwin Hospital, Darwin, Northern Territory, Australia
| | - Jann N Hennessy
- Territory Pathology, Royal Darwin Hospital, Darwin, Northern Territory, Australia
| | - Bart J Currie
- Global and Tropical Health Division, Menzies School of Health Research, Charles Darwin University, Darwin, Northern Territory, Australia.,Department of Infectious Diseases, Royal Darwin Hospital, Darwin, Northern Territory, Australia
| | - Rob W Baird
- Global and Tropical Health Division, Menzies School of Health Research, Charles Darwin University, Darwin, Northern Territory, Australia.,Territory Pathology, Royal Darwin Hospital, Darwin, Northern Territory, Australia.,Department of Infectious Diseases, Royal Darwin Hospital, Darwin, Northern Territory, Australia
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19
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Campbell R, Martin D, Pierce D, Nweze S. Community-associated MRSA among Indigenous children in remote settings: Best practices for NPs. Nurse Pract 2020; 45:34-40. [PMID: 32956198 PMCID: PMC7529415 DOI: 10.1097/01.npr.0000696916.42368.1a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Community-associated methicillin-resistant Staphylococcus aureus (CA-MRSA) is a major public health concern for Indigenous pediatric populations worldwide. It is the leading cause of skin and soft tissue infections in this demographic. This article reviews the literature and presents an evidence-based algorithm for the assessment and management of CA-MRSA among Indigenous children in remote settings.
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20
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The applicability of commonly used predictive scoring systems in Indigenous Australians with sepsis: An observational study. PLoS One 2020; 15:e0236339. [PMID: 32697796 PMCID: PMC7375531 DOI: 10.1371/journal.pone.0236339] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2020] [Accepted: 07/03/2020] [Indexed: 12/29/2022] Open
Abstract
Background Indigenous Australians suffer a disproportionate burden of sepsis, however, the performance of scoring systems that predict mortality in Indigenous patients with critical illness is incompletely defined. Materials and methods The study was performed at an Australian tertiary-referral hospital between January 2014 and June 2017, and enrolled consecutive Indigenous and non-Indigenous adults admitted to ICU with sepsis. The ability of the ANZROD, APACHE-II, APACHE-III, SAPS-II, SOFA and qSOFA scores to predict death before ICU discharge in the two populations was compared. Results There were 442 individuals enrolled in the study, 145 (33%) identified as Indigenous. Indigenous patients were younger than non-Indigenous patients (median (interquartile range (IQR) 53 (43–60) versus 65 (52–73) years, p = 0.0001) and comorbidity was more common (118/145 (81%) versus 204/297 (69%), p = 0.005). Comorbidities that were more common in the Indigenous patients included diabetes mellitus (84/145 (58%) versus 67/297 (23%), p<0.0001), renal disease (56/145 (39%) versus 29/297 (10%), p<0.0001) and cardiovascular disease (58/145 (40%) versus 83/297 (28%), p = 0.01). The use of supportive care (including vasopressors, mechanical ventilation and renal replacement therapy) was similar in Indigenous and non-Indigenous patients, and the two populations had an overall case-fatality rate that was comparable (17/145 (12%) and 38/297 (13%) (p = 0.75)), although Indigenous patients died at a younger age (median (IQR): 54 (50–60) versus 70 (61–76) years, p = 0.0001). There was no significant difference in the ability of any the scores to predict mortality in the two populations. Conclusions Although the crude case-fatality rates of Indigenous and non-Indigenous Australians admitted to ICU with sepsis is comparable, Indigenous patients die at a much younger age. Despite this, the ability of commonly used scoring systems to predict outcome in Indigenous Australians is similar to that of non-Indigenous Australians, supporting their use in ICUs with a significant Indigenous patient population and in clinical trials that enrol Indigenous Australians.
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Secombe P, Planche Y, Athan E, Ollapallil J. Critical care burden of skin and soft tissue infection in Central Australia: More than skin deep. Aust J Rural Health 2020; 27:550-556. [PMID: 31880053 DOI: 10.1111/ajr.12539] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2018] [Revised: 03/12/2019] [Accepted: 05/19/2019] [Indexed: 12/25/2022] Open
Abstract
OBJECTIVE To describe the epidemiology, critical care resource use of and outcomes from an intensive care admission for a skin or soft tissue infection in Central Australia. DESIGN Retrospective database review of prospectively collected data identifying all patients requiring admission for a life-threatening illness related to a skin or soft tissue infection. SETTING Intensive care unit Alice Springs Hospital. PARTICIPANTS All patients admitted with a primary diagnosis of skin or soft tissue infection between 2010 and 2016. MAIN OUTCOME MEASURE Annualised incidence of skin or soft tissue infection requiring intensive care. Secondary outcomes examined resource use (length of stay, mechanical ventilation) and a description of the microbiology of skin or soft tissue infection in Central Australia. RESULTS There were 80 admissions to the intensive care unit over the sampling period, yielding an annualised incidence of 24.2 intensive care unit admissions per 100 000 population. Eighty-five per cent were Indigenous with high rates of co-morbid disease including poorly controlled type 2 diabetes, haemodialysis-dependent chronic kidney disease and co-infection with human T-cell lymphocytic virus. The predominant type of skin or soft tissue infection was abscess, predominantly below the waist. Gram-positive cocci comprised 50% of the organisms cultured, and 20% of organisms were multi-resistant. Mortality was 0% and 1.3% at 28 and 90 days respectively. CONCLUSION The annualised incidence of skin or soft tissue infection requiring intensive care support in Central Australia is higher than expected. This probably reflects the high burden of chronic disease and poor living conditions. While there is no mortality burden associated with skin or soft tissue infection in Central Australia, there is substantial morbidity. The data from this study adds weight to the call for improved primary health resources for this group.
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Affiliation(s)
- Paul Secombe
- Department of Intensive Care, Alice Springs Hospital, Alice Springs, Northern Territory, Australia.,School of Medicine, Flinders University, Adelaide, South Australia, Australia.,School of Epidemiology and Public Health, Monash University, Mebourne, Victoria, Australia
| | - Yannick Planche
- Department of Intensive Care, St Vincent's Hospital, Melbourne, Victoria, Australia
| | - Eugene Athan
- Department of Infectious Disease, Barwon Health, Deakin University, Geelong, Victoria, Australia
| | - Jacob Ollapallil
- Department of Surgery, Alice Springs Hospital, Alice Springs, Northern Territory, Australia
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22
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Secombe PJ, Brown A, Bailey MJ, Pilcher D. Equity for Indigenous Australians in intensive care. Med J Aust 2019; 211:297-299.e1. [PMID: 31523822 DOI: 10.5694/mja2.50339] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Affiliation(s)
- Paul J Secombe
- Alice Springs Hospital, Alice Springs, NT.,Monash University, Melbourne, VIC
| | - Alex Brown
- South Australian Health and Medical Research Institute, Adelaide, SA.,University of South Australia, Adelaide, SA
| | | | - David Pilcher
- Alfred Health, Melbourne, VIC.,Centre for Outcome and Resource Evaluation, Australian and New Zealand Intensive Care Society, Melbourne, VIC
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Diagnostic Stewardship: A Clinical Decision Rule for Blood Cultures in Community-Onset Methicillin-Resistant Staphylococcus aureus (MRSA) Skin and Soft Tissue Infections. Infect Dis Ther 2019; 8:229-242. [PMID: 30783995 PMCID: PMC6522577 DOI: 10.1007/s40121-019-0238-1] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2019] [Indexed: 01/02/2023] Open
Abstract
Introduction The emergence, spread and persistence of methicillin-resistant Staphylococcus aureus (MRSA) as a causative pathogen in community-onset (CO) skin and soft tissue infections (SSTIs) have resulted in substantial changes in the management of these infections. The indications for obtaining blood cultures in patients with CO-MRSA SSTIs remain poorly defined. The objectives of this study were to derive and validate a clinical decision rule that predicts the probability of MRSA bacteremia in CO-MRSA SSTIs and to identify a low-risk population for whom blood cultures may be safely omitted. Methods This was a retrospective, case-control study with an internal temporal validation cohort conducted at two large urban academic medical centers. Hospitalized adults with CO-MRSA SSTI between 2010 and 2018 were included. Independent predictors of MRSA bacteremia were identified through multivariable logistic regression. A decision rule was derived using weighted coefficient-based scoring. The decision rule was validated in an internal temporal validation cohort. Results A total of 307 patients (155 cases and 152 controls) were included in the derivation cohort. A decision rule was created with a “major criterion” defined as purulent cellulitis and “minor criteria” defined as abnormal temperature, intravenous drug use, leukocytosis, tachycardia, body mass index < 25 kg/m2 and non-upper extremity infection site. A blood culture is indicated by this rule for patients with one major or at least two minor criteria. Otherwise patients are classified as low risk, and blood cultures may be omitted. The sensitivity of the decision rule in the derivation and validation cohorts was 98.71% (95% CI 95.42%, 99.84%) and 95.65% (78.05%, 99.89%), respectively. The specificity was 23.03% (95% CI 16.59%, 30.54%) and 30.77% (95% CI 24.15%, 38.02%), respectively. Conclusion The decision rule developed and validated in this study provides a standardized, evidenced-based approach to determine the need for blood cultures based on bacteremia risk.
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Cameron JK, Hall L, Tong SYC, Paterson DL, Halton K. Incidence of community onset MRSA in Australia: least reported where it is Most prevalent. Antimicrob Resist Infect Control 2019; 8:33. [PMID: 30805180 PMCID: PMC6373119 DOI: 10.1186/s13756-019-0485-7] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2018] [Accepted: 02/01/2019] [Indexed: 11/10/2022] Open
Abstract
Background This is the first review of literature and synthesis of data on community onset methicillin resistant Staphylococcus aureus (CO-MRSA) infections in Australia. Incidence of CO-MRSA varies considerably in Australia, depending on geographic and demographic factors. Methods Data for the rates of MRSA infections were collected from articles identified using PubMed, Scopus, the grey literature and data from State and Federal Government Surveillance Systems. We synthesized data and developed a framework for how data was selected, collated, linked, organized and interpreted. Results The results of our literature search demonstrates considerable gaps in the reporting of CO-MRSA in Australia. Consequently, total incidences were under reported; however the available data suggests the incidence varied between 44 (Tasmania) and 388 (southern Northern Territory) cases per 100,000 person years. Hospitalised cases of CO-MRSA varied between 3.8 (regional Victoria) and 329 (southern Northern Territory). Taking the median percentage of infections by site for all regions available, skin and soft tissue infections (SSTIs) consisted of 56% of hospitalized CO-MRSA, compared with bacteremias, which represented 14%. No region had a complete data set of CO-MRSA infections treated in out-patient settings and so incidences were underestimates. Nevertheless, estimates of the incidence of CO-MRSA treated outside hospitals varied between 11.3 (Melbourne) and 285 (Northern Territory) per 100,000 person-years. These infections were chiefly SSTIs, although urinary tract infections were also noted.Incidences of CO-MRSA blood-stream infections and outpatient skin and soft tissue infections have been increasing with time, except in Tasmania. CO-MRSA is observed to affect people living in remote areas and areas of socioeconomic disadvantage disproportionately. Conclusions We generated the first estimates of the incidence of CO-MRSA infections in Australia and identified stark regional differences in the nature and frequency of infections. Critically, we demonstrate that there has been a lack of consistency in reporting CO-MRSA and a general dearth of data. The only government in Australia that requires reporting of CO-MRSA is the Tasmanian, where the infection was least prevalent. Some regions of Australia have very high incidences of CO-MRSA. To improve surveillance and inform effective interventions, we recommend a standardized national reporting system in Australia that reports infections at a range of infection sites, has broad geographic coverage and consistent use of terminology. We have identified limitations in the available data that hinder understanding the prevalence of CO-MRSA.
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Affiliation(s)
- Jessica K. Cameron
- Australian Centre for Health Services Innovation and the Institute for Health and Biomedical Innovation, Queensland University Technology, Brisbane, Australia
| | - Lisa Hall
- Australian Centre for Health Services Innovation and the Institute for Health and Biomedical Innovation, Queensland University Technology, Brisbane, Australia
- School of Public Health, University of Queensland, Brisbane, Australia
| | - Steven Y. C. Tong
- Victorian Infectious Disease Service, The Royal Melbourne Hospital, and Doherty Department University of Melbourne, Peter Doherty Institute for Infection and Immunity, Victoria, Australia
- Menzies School of Health Research, Darwin, Australia
| | - David L. Paterson
- UQ Centre for Clinical Research, University of Queensland, Brisbane, Australia
| | - Kate Halton
- Australian Centre for Health Services Innovation and the Institute for Health and Biomedical Innovation, Queensland University Technology, Brisbane, Australia
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25
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Andreatos N, Shehadeh F, Pliakos EE, Mylonakis E. The impact of antibiotic prescription rates on the incidence of MRSA bloodstream infections: A county-level, US-wide analysis. Int J Antimicrob Agents 2018; 52:195-200. [PMID: 29656062 DOI: 10.1016/j.ijantimicag.2018.04.003] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2017] [Revised: 03/14/2018] [Accepted: 04/04/2018] [Indexed: 01/12/2023]
Abstract
OBJECTIVES To investigate the association of methicillin-resistant Staphylococcus aureus (MRSA) bloodstream infection with socioeconomic factors and antibiotic prescriptions at the county level. METHODS MRSA bloodstream infection rates were extracted from the Medicare Hospital Compare database. Data on socioeconomic factors and antibiotic prescriptions were obtained from the US Census Bureau and the Medicare Part D database, respectively. RESULTS In multivariate analysis, antibiotic prescriptions demonstrated a powerful positive association with MRSA bloodstream infection rates [Coefficient (Coeff): 0.432, 95% Confidence Interval (CI): 0.389, 0.474, P < 0.001], which was largely attributable to lincosamides (Coeff: 0.257, 95% CI: 0.177, 0.336, P < 0.001), glycopeptides (Coeff: 0.223, 95% CI: 0.175, 0.272, P < 0.001), and sulfonamides (Coeff: 0.166, 95% CI: 0.082, 0.249, P < 0.001). Sociodemographic factors, such as poverty (Coeff: 0.094, 95% CI: 0.034, 0.155, P=0.002) exerted a secondary positive impact on MRSA bloodstream infection. Conversely, college education (Coeff: -0.037, 95% CI: -0.068, -0.005, P=0.024), a larger median room number per house (Coeff: -0.107, 95% CI: -0.134, -0.081, P < 0.001), and an income above the poverty line (100% < income < 150% of the poverty line) (Coeff: -0.257, 95% CI: -0.314, -0.199, P < 0.001) were negatively associated with MRSA incidence rates. A multivariate model that incorporated socioeconomic data and antibiotic prescription rates predicted 39.1% of the observed variation in MRSA bloodstream infection rates (Pmodel < 0.001). CONCLUSIONS MRSA bloodstream infection rates were strongly associated with county-level antibiotic use and socioeconomic factors. If the causality of these associations is confirmed, antimicrobial stewardship programs that extend outside acute healthcare facilities would likely prove instrumental in arresting the spread of MRSA.
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Affiliation(s)
- Nikolaos Andreatos
- Infectious Diseases Division, Warren Alpert Medical School of Brown University, Rhode Island Hospital, Providence, RI
| | - Fadi Shehadeh
- Infectious Diseases Division, Warren Alpert Medical School of Brown University, Rhode Island Hospital, Providence, RI
| | - Elina Eleftheria Pliakos
- Infectious Diseases Division, Warren Alpert Medical School of Brown University, Rhode Island Hospital, Providence, RI
| | - Eleftherios Mylonakis
- Infectious Diseases Division, Warren Alpert Medical School of Brown University, Rhode Island Hospital, Providence, RI.
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26
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Holmes NE, Robinson JO, van Hal SJ, Munckhof WJ, Athan E, Korman TM, Cheng AC, Turnidge JD, Johnson PDR, Howden BP. Morbidity from in-hospital complications is greater than treatment failure in patients with Staphylococcus aureus bacteraemia. BMC Infect Dis 2018; 18:107. [PMID: 29506483 PMCID: PMC5838938 DOI: 10.1186/s12879-018-3011-2] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2017] [Accepted: 02/22/2018] [Indexed: 12/21/2022] Open
Abstract
BACKGROUND Various studies have identified numerous factors associated with poor clinical outcomes in patients with Staphylococcus aureus bacteraemia (SAB). A new study was created to provide deeper insight into in-hospital complications and risk factors for treatment failure. METHODS Adult patients hospitalised with Staphylococcus aureus bacteraemia (SAB) were recruited prospectively into a multi-centre cohort. The primary outcome was treatment failure at 30 days (composite of all-cause mortality, persistent bacteraemia, or recurrent bacteraemia), and secondary measures included in-hospital complications and mortality at 6- and 12-months. Data were available for 222 patients recruited from February 2011 to December 2012. RESULTS Treatment failure at 30-days was recorded in 14.4% of patients (30-day mortality 9.5%). Multivariable analysis predictors of treatment failure included age > 70 years, Pitt bacteraemia score ≥ 2, CRP at onset of SAB > 250 mg/L, and persistent fevers after SAB onset; serum albumin at onset of SAB, receipt of appropriate empiric treatment, recent healthcare attendance, and performing echocardiography were protective. 6-month and 12-month mortality were 19.1% and 24.2% respectively. 45% experienced at least one in-hospital complication, including nephrotoxicity in 19.5%. CONCLUSIONS This study demonstrates significant improvements in 30-day outcomes in SAB in Australia. However, we have identified important areas to improve outcomes from SAB, particularly reducing renal dysfunction and in-hospital treatment-related complications.
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Affiliation(s)
- Natasha E Holmes
- Department of Infectious Diseases, Austin Health, Austin Centre for Infection Research, PO Box 5555, Heidelberg, VIC, 3084, Australia. .,Department of Microbiology and Immunology, University of Melbourne, Melbourne, VIC, Australia.
| | - J Owen Robinson
- Department of Microbiology and Infectious Diseases, PathWest Laboratory Medicine-WA, Royal Perth Hospital, 197 Wellington Street, Perth, WA, 6000, Australia.,Australian Collaborating Centre for Enterococcus and Staphylococcus Species (ACCESS) Typing and Research, School of Biomedical Sciences, Curtin University, Perth, WA, Australia
| | - Sebastiaan J van Hal
- Department of Microbiology and Infectious Diseases, Royal Prince Alfred Hospital, Missenden Road, Camperdown, NSW, 2050, Australia.,Department of Medicine, University of Western Sydney, Sydney, NSW, Australia
| | - Wendy J Munckhof
- Infection Management Services, Princess Alexandra Hospital, 199 Ipswich Road, Woolloongabba, QLD, 4102, Australia.,Department of Medicine, University of Queensland, St Lucia, QLD, Australia
| | - Eugene Athan
- Department of Infectious Diseases, University Hospital Geelong, Barwon Health, Bellerine Street, Geelong, VIC, 3220, Australia.,Department of Medicine, Deakin University, Geelong, VIC, Australia.,Department of Medicine, University of Melbourne, Parkville, VIC, Australia
| | - Tony M Korman
- Department of Infectious Diseases, Monash Health, 246 Clayton Road, Clayton, VIC, 3168, Australia.,Department of Medicine, Monash University, Clayton, VIC, Australia
| | - Allen C Cheng
- Department of Infectious Diseases, Alfred Hospital, 55 Commercial Road, Prahran, VIC, 3181, Australia.,Department of Epidemiology and Preventive Medicine, Monash University, Prahran, VIC, Australia
| | - John D Turnidge
- Australian Commission on Safety and Quality in Health Care, Level 5, 255 Elizabeth Street, Sydney, NSW, 2000, Australia.,Department of Paediatrics, University of Adelaide, Adelaide, SA, Australia
| | - Paul D R Johnson
- Department of Infectious Diseases, Austin Health, Austin Centre for Infection Research, PO Box 5555, Heidelberg, VIC, 3084, Australia.,Department of Medicine, University of Melbourne, Parkville, VIC, Australia.,Department of Microbiology, Monash University, Clayton, VIC, Australia
| | - Benjamin P Howden
- Department of Infectious Diseases, Austin Health, Austin Centre for Infection Research, PO Box 5555, Heidelberg, VIC, 3084, Australia.,Department of Microbiology and Immunology, University of Melbourne, Melbourne, VIC, Australia.,Department of Microbiology, Monash University, Clayton, VIC, Australia.,Microbiological Diagnostic Unit, Doherty Institute for Infection and Immunity, 792 Elizabeth Street, Melbourne, VIC, 3000, Australia
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Hospital-Onset MRSA Bacteremia Rates Are Significantly Correlated With Sociodemographic Factors: A Step Toward Risk Adjustment. Infect Control Hosp Epidemiol 2018; 39:479-481. [PMID: 29457569 DOI: 10.1017/ice.2018.12] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
The correlations between census-derived sociodemographic variables and hospital-onset methicillin-resistant Staphylococcus aureus bacteremia (HO-MRSAB) rates were examined at the US state level. On multivariable analysis, only percent African American remained statistically significant. This finding highlights an important disparity and suggests that risk adjustment is needed when comparing HO-MRSAB rates among US states. Infect Control Hosp Epidemiol 2018;39:479-481.
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Grinlinton M, Sohn S, Hill A, Zeng I, Wagener J. Clinical characteristics affecting length of stay in patients with cellulitis. ANZ J Surg 2018; 89:90-95. [PMID: 29415341 DOI: 10.1111/ans.14413] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2017] [Revised: 12/01/2017] [Accepted: 12/19/2017] [Indexed: 11/27/2022]
Abstract
BACKGROUND This study aimed to profile the clinical characteristics of patients presenting to Middlemore Hospital with cellulitis in order to identify factors that are associated with an increased length of stay (LOS). METHODS Retrospective clinical data were collected for all patients aged 18 and above who were admitted with cellulitis to Middlemore Hospital General Surgical Department between 1 January and 31 March 2014. Comorbidities, laboratory results and medical conditions were included in the investigation. RESULTS The study included 201 patients. Significant factors associated with increased LOS include type 2 diabetes mellitus (P < 0.012), obesity (P < 0.001), raised C-reactive protein (P < 0.0001), raised white cell count (P < 0.0001), raised temperature (P < 0.0001), septic shock (P < 0.003), multiorgan failure (P < 0.01), extended-spectrum beta-lactamases or methicillin-resistant Staphylococcus aureus colonization (P < 0.04) and intensive care unit admission (P < 0.0004). CONCLUSION This single-centre, retrospective clinical study has identified several factors that are significantly associated with an increased LOS. These factors provide a basis for future studies that may facilitate identification and timely medical optimization of high-risk patients.
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Affiliation(s)
- Megan Grinlinton
- Department of Surgery, Counties Manukau Health, Auckland, New Zealand
| | - Stephen Sohn
- Department of Surgery, Counties Manukau Health, Auckland, New Zealand
| | - Andrew Hill
- Department of Surgery, Counties Manukau Health, Auckland, New Zealand.,Faculty of Medical and Health Sciences, The University of Auckland, Auckland, New Zealand
| | - Irene Zeng
- Department of Surgery, Counties Manukau Health, Auckland, New Zealand.,Health Intelligence and Informatics, Ko Awatea, Middlemore Hospital, Auckland, New Zealand
| | - Jenny Wagener
- Department of Surgery, Counties Manukau Health, Auckland, New Zealand
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29
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The rise of methicillin resistant Staphylococcus aureus: now the dominant cause of skin and soft tissue infection in Central Australia. Epidemiol Infect 2017; 145:2817-2826. [PMID: 28803587 DOI: 10.1017/s0950268817001716] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022] Open
Abstract
This study aimed to examine the epidemiology and treatment outcomes of community-onset purulent staphylococcal skin and soft tissue infections (SSTI) in Central Australia. We performed a prospective observational study of patients hospitalised with community-onset purulent staphylococcal SSTI (n = 160). Indigenous patients accounted for 78% of cases. Patients were predominantly young adults; however, there were high rates of co-morbid disease. Community-associated methicillin-resistant Staphylococcus aureus (CA-MRSA) was the dominant phenotype, accounting for 60% of cases. Hospitalisation during the preceding 6 months, and haemodialysis dependence were significant predictors of CA-MRSA infection on univariate analysis. Clinical presentation and treatment outcomes were found to be comparable for methicillin-susceptible S. aureus (MSSA) and methicillin-resistant cases. All MRSA isolates were characterised as non-multi-resistant, with this term used interchangeably with CA-MRSA in this analysis. We did not find an association between receipt of an active antimicrobial agent within the first 48 h, and progression of infection; need for further surgical debridement; unplanned General Practitioner or hospital re-presentation; or need for further antibiotics. At least one adverse outcome was experienced by 39% of patients. Clindamycin resistance was common, while rates of trimethoprim-sulfamethoxazole resistance were low. This study suggested the possibility of healthcare-associated transmission of CA-MRSA. This is the first Australian report of CA-MRSA superseding MSSA as the cause of community onset staphylococcal SSTI.
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Harch SAJ, MacMorran E, Tong SYC, Holt DC, Wilson J, Athan E, Hewagama S. High burden of complicated skin and soft tissue infections in the Indigenous population of Central Australia due to dominant Panton Valentine leucocidin clones ST93-MRSA and CC121-MSSA. BMC Infect Dis 2017; 17:405. [PMID: 28592231 PMCID: PMC5463332 DOI: 10.1186/s12879-017-2460-3] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2016] [Accepted: 05/11/2017] [Indexed: 02/05/2023] Open
Abstract
Background Superficial skin and soft tissue infections (SSTIs) are common among the Indigenous population of the desert regions of Central Australia. However, the overall burden of disease and molecular epidemiology of Staphylococcus aureus complicated SSTIs has yet to be described in this unique population. Methods Alice Springs Hospital (ASH) admission data was interrogated to establish the population incidence of SSTIs. A prospective observational study was conducted on a subset of S. aureus complicated SSTIs (carbuncles and furuncles requiring surgical intervention) presenting during a one month period to further characterize the clinical and molecular epidemiology. High resolution melting analysis was used for clonal complex discrimination. Real-time polymerase chain reaction identifying the lukF component of the Panton Valentine leucocidin (pvl) gene determined pvl status. Clinical and outcome data was obtained from the ASH medical and Northern Territory shared electronic health records. Results SSTIs represented 2.1% of ASH admissions during 2014. 82.6% occurred in Indigenous patients (n = 382) with an estimated incidence of 18.9 per 1, 000 people years compared to the non-Indigenous population of 2.9 per 1000, with an incident rate ratio of 6.6 (95% confidence interval 5.1–8.5). Clinical and molecular analysis was performed on 50 isolates from 47 patients. Community-associated methicillin-resistant S. aureus (CA-MRSA) predominated (57% of isolates). The high burden of SSTIs is partly explained by the prevalence of pvl positive strains of S. aureus (90% isolates) for both CA-MRSA and methicillin-susceptible S. aureus (MSSA). ST93-MRSA and CC121-MSSA were the most prevalent clones. SSTIs due to ST93-MRSA were more likely to require further debridement (p = 0.039), however they also more frequently received inactive antimicrobial therapy (p < 0.001). Conclusions ST93-MRSA and CC121-MSSA are the dominant causes of carbuncles and furuncles in Central Australia. Both of these virulent clones harbor pvl but the impact on clinical outcomes remains uncertain. The high prevalence of CA-MRSA supports empiric vancomycin use in this population when antimicrobial therapy is indicated. Prompt surgical intervention remains the cornerstone of treatment.
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Affiliation(s)
- Susan A J Harch
- Alice Springs Hospital, Alice Springs, Northern Territory, Australia. .,SA Pathology, PO Box 14, Rundle Mall, Adelaide, South Australia, 5000, Australia.
| | - Eleanor MacMorran
- Alice Springs Hospital, Alice Springs, Northern Territory, Australia
| | - Steven Y C Tong
- Menzies School of Health Research, Charles Darwin University, Darwin, Northern Territory, Australia.,Royal Darwin Hospital, Darwin, Northern Territory, Australia
| | - Deborah C Holt
- Menzies School of Health Research, Charles Darwin University, Darwin, Northern Territory, Australia
| | - Judith Wilson
- Menzies School of Health Research, Charles Darwin University, Darwin, Northern Territory, Australia
| | | | - Saliya Hewagama
- Alice Springs Hospital, Alice Springs, Northern Territory, Australia
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31
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Meumann EM, Andersson P, Yeaman F, Oldfield S, Lilliebridge R, Bentley SD, Krause V, Beaman M, Currie BJ, Holt DC, Giffard PM, Tong SYC. Whole genome sequencing to investigate a putative outbreak of the virulent community-associated methicillin-resistant Staphylococcus aureus ST93 clone in a remote Indigenous community. Microb Genom 2016; 2:e000098. [PMID: 28348837 PMCID: PMC5359412 DOI: 10.1099/mgen.0.000098] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2016] [Accepted: 11/28/2016] [Indexed: 11/20/2022] Open
Abstract
We report two cases of severe pneumonia due to clone ST93 methicillin-resistant Staphylococcus aureus (MRSA) presenting from a remote Australian Indigenous community within a 2-week period, and the utilization of whole genome sequences to determine whether these were part of an outbreak. S. aureus was isolated from 12 of 92 nasal swabs collected from 25 community households (including the two index households); one isolate was ST93. Three of five skin lesion S. aureus isolates obtained at the community were ST93. Whole genome sequencing of the ST93 isolates from this study and a further 20 ST93 isolates from the same region suggested that recent transmission and progression to disease had not taken place. The proximity in time and space of the two severe pneumonia cases is probably a reflection of the high burden of disease due to ST93 MRSA in this population where skin infections and household crowding are common.
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Affiliation(s)
- Ella M Meumann
- 3Centre for Disease Control, Department of Health, Northern Territory Government, Darwin, Northern Territory, Australia.,2Department of Infectious Diseases, Royal Darwin Hospital, Darwin, Northern Territory, Australia.,1Global and Tropical Health Division, Menzies School of Health Research, Charles Darwin University, Darwin, Northern Territory, Australia
| | - Patiyan Andersson
- 1Global and Tropical Health Division, Menzies School of Health Research, Charles Darwin University, Darwin, Northern Territory, Australia
| | - Fiona Yeaman
- 2Department of Infectious Diseases, Royal Darwin Hospital, Darwin, Northern Territory, Australia
| | - Sarah Oldfield
- 2Department of Infectious Diseases, Royal Darwin Hospital, Darwin, Northern Territory, Australia
| | - Rachael Lilliebridge
- 1Global and Tropical Health Division, Menzies School of Health Research, Charles Darwin University, Darwin, Northern Territory, Australia
| | | | - Vicki Krause
- 3Centre for Disease Control, Department of Health, Northern Territory Government, Darwin, Northern Territory, Australia
| | - Miles Beaman
- 5School of Pathology and Laboratory Medicine, University of Western Australia, Perth, Western Australia, Australia
| | - Bart J Currie
- 1Global and Tropical Health Division, Menzies School of Health Research, Charles Darwin University, Darwin, Northern Territory, Australia.,2Department of Infectious Diseases, Royal Darwin Hospital, Darwin, Northern Territory, Australia
| | - Deborah C Holt
- 1Global and Tropical Health Division, Menzies School of Health Research, Charles Darwin University, Darwin, Northern Territory, Australia
| | - Philip M Giffard
- 1Global and Tropical Health Division, Menzies School of Health Research, Charles Darwin University, Darwin, Northern Territory, Australia
| | - Steven Y C Tong
- 1Global and Tropical Health Division, Menzies School of Health Research, Charles Darwin University, Darwin, Northern Territory, Australia.,2Department of Infectious Diseases, Royal Darwin Hospital, Darwin, Northern Territory, Australia
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Braquet P, Alla F, Cornu C, Goehringer F, Piroth L, Chirouze C, Revest M, Lechiche C, Duval X, Le Moing V. Factors associated with 12 week case-fatality in Staphylococcus aureus bacteraemia: a prospective cohort study. Clin Microbiol Infect 2016; 22:948.e1-948.e7. [PMID: 27515395 DOI: 10.1016/j.cmi.2016.07.034] [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: 05/23/2016] [Revised: 07/24/2016] [Accepted: 07/31/2016] [Indexed: 12/21/2022]
Abstract
Staphylococcus aureus bacteraemia (SAB) is a frequent and deadly disease. Given the lack of a randomized trial, optimal first-line antibiotic treatment is still debated. Our aim was to identify prognostic factors in SAB patients and to analyse the impact of first-line antibiotics. The VIRSTA prospective cohort study was conducted in eight tertiary care centres in France. Consecutive incident adults in whom a blood culture drawn in participating centres grew S. aureus between April 2009 and October 2011 were prospectively followed for 12 weeks. Factors associated with 12-week case-fatality were identified by multivariate logistic regression. We enrolled 2091 patients and analysed survival in 1972 (median age 67.8 years, interquartile range 55.5-78.9; females 692/1972, 35.1%). SAB was nosocomial or healthcare-related in 1372/1972 (69.6%) of cases and the primary focus was unknown in 414/1972 (21.0%) of cases. Week 12 case-fatality rate was 671/1972 (34.0%). The main independent prognostic factors on multivariate analysis were age (adjusted OR by 10-year increment 1.56; 95% CI 1.44-1.69), septic shock (OR 5.11; 95% CI 3.84-6.80), metastatic cancer (OR 4.28; 95% CI 2.88-6.38), and unknown primary focus (OR 2.62; 95% CI 2.02-3.41). In the 1538 patients with methicillin-sensitive S. aureus (MSSA) bacteraemia, first-line empiric antistaphylococcal penicillins (OR 0.40; 95% CI 0.17-0.95) and vancomycin (OR 0.37; 95% CI 0.17-0.83), alone or combined with an aminoglycoside, were associated with better outcome compared with other antibiotics. There are few modifiable prognostic factors for SAB. Initiating empiric antibiotics with antistaphylococcal penicillins or vancomycin may be associated with better outcome in MSSA bacteraemia.
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Affiliation(s)
- P Braquet
- Department for Infectious Diseases and Tropical Medicine, Centre Hospitalier Universitaire de Montpellier, Montpellier, France; UMI 233 TransVIHMI, Université de Montpellier, Institut de Recherche sur le Développement, Montpellier, France.
| | - F Alla
- Université de Lorraine, Université Paris Descartes, Apemac, EA 4360, Nancy, France; INSERM, CIC-EC, CIE6, Nancy, France; CHU Nancy, Nancy, France
| | - C Cornu
- INSERM, CIC1407, Lyon, France; CHU Lyon, Service de Pharmacologie Clinique, Lyon, France; Université Lyon, UMR 5558, Lyon, France
| | - F Goehringer
- Department of Infectious Diseases and Tropical Medicine, Centre Hospitalier Universitaire de Nancy, France
| | - L Piroth
- CHU de Dijon, UMR 1347-MERS, Université de Bourgogne, Dijon, France
| | - C Chirouze
- UMR CNRS 6249 Chrono-environnement, Université de Bourgogne Franche-Comté, CHU de Besançon, Besançon, France
| | - M Revest
- Infectious Diseases and Intensive Care Unit, Centre Hospitalier Universitaire de Rennes, France
| | - C Lechiche
- Department for Infectious Diseases and Tropical Medicine, Centre Hospitalier Universitaire de Nîmes, Nîmes, France
| | - X Duval
- Université Paris Diderot Sorbonne, Paris, France; IAME, INSERM, UMR 1137, CIC 1425, Paris, France; AP-HP, Hôpital Bichat Claude Bernard, Paris, France
| | - V Le Moing
- Department for Infectious Diseases and Tropical Medicine, Centre Hospitalier Universitaire de Montpellier, Montpellier, France; UMI 233 TransVIHMI, Université de Montpellier, Institut de Recherche sur le Développement, Montpellier, France.
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Brischetto A, Leung G, Marshall CS, Bowen AC. A Retrospective Case-Series of Children With Bone and Joint Infection From Northern Australia. Medicine (Baltimore) 2016; 95:e2885. [PMID: 26937926 PMCID: PMC4779023 DOI: 10.1097/md.0000000000002885] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
Abstract
Our clinical workload as infectious diseases pediatricians in northern Australia is dominated by complicated bone and joint infections in indigenous children. We reviewed the clinical presentation, microbiology, management, and outcomes of children presenting to Royal Darwin Hospital with bone and joint infections between 2010 and 2013, and aimed to compare severity and incidence with other populations worldwide.A retrospective audit was performed on children aged 0 to 18 years who were admitted to Royal Darwin Hospital between 1 January 2010 and 31 December 2013 with a bone and joint infection.Seventy-nine patients were identified, of whom 57 (72%) had osteomyelitis ± associated septic arthritis and 22 (28%) had septic arthritis alone. Sixty (76%) were indigenous Australians. The incidence rate of osteomyelitis for indigenous children was 82 per 100,000 children. Staphylococcus aureus was the confirmed pathogen in 43/79 (54%), of which 17/43 (40%) were methicillin resistant. Median length of stay was 17 days (interquartile range: 10-31 days) and median length of IV antibiotics was 15 days (interquartile range: 6-24 days). Fifty-six (71%) required at least 1 surgical procedure. Relapse within 12 months was documented in 12 (15%) patients.We report 3 key findings: osteomyelitis incidence in indigenous children of northern Australia is amongst the highest reported in the world; methicillin-resistant S aureus accounts for 36% of osteomyelitis with a positive microbiological diagnosis; and the severity of disease requires extended antibiotic therapy. Despite this, 15% of the cohort relapsed within 12 months and required readmission.
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Affiliation(s)
- Anna Brischetto
- From the Department of Infectious Diseases (AB, GL, CSM, ACB), Royal Darwin Hospital; Department of Infectious Diseases (ACB); Princess Margaret Hospital (ACB), Perth; Menzies School of Health Research (ACB), Darwin; and Telethon Kids Institute (ACB), University of Western Australia, Perth, Australia
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Tosas Auguet O, Betley JR, Stabler RA, Patel A, Ioannou A, Marbach H, Hearn P, Aryee A, Goldenberg SD, Otter JA, Desai N, Karadag T, Grundy C, Gaunt MW, Cooper BS, Edgeworth JD, Kypraios T. Evidence for Community Transmission of Community-Associated but Not Health-Care-Associated Methicillin-Resistant Staphylococcus Aureus Strains Linked to Social and Material Deprivation: Spatial Analysis of Cross-sectional Data. PLoS Med 2016; 13:e1001944. [PMID: 26812054 PMCID: PMC4727805 DOI: 10.1371/journal.pmed.1001944] [Citation(s) in RCA: 51] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/27/2015] [Accepted: 12/11/2015] [Indexed: 11/18/2022] Open
Abstract
BACKGROUND Identifying and tackling the social determinants of infectious diseases has become a public health priority following the recognition that individuals with lower socioeconomic status are disproportionately affected by infectious diseases. In many parts of the world, epidemiologically and genotypically defined community-associated (CA) methicillin-resistant Staphylococcus aureus (MRSA) strains have emerged to become frequent causes of hospital infection. The aim of this study was to use spatial models with adjustment for area-level hospital attendance to determine the transmission niche of genotypically defined CA- and health-care-associated (HA)-MRSA strains across a diverse region of South East London and to explore a potential link between MRSA carriage and markers of social and material deprivation. METHODS AND FINDINGS This study involved spatial analysis of cross-sectional data linked with all MRSA isolates identified by three National Health Service (NHS) microbiology laboratories between 1 November 2011 and 29 February 2012. The cohort of hospital-based NHS microbiology diagnostic services serves 867,254 usual residents in the Lambeth, Southwark, and Lewisham boroughs in South East London, United Kingdom (UK). Isolates were classified as HA- or CA-MRSA based on whole genome sequencing. All MRSA cases identified over 4 mo within the three-borough catchment area (n = 471) were mapped to small geographies and linked to area-level aggregated socioeconomic and demographic data. Disease mapping and ecological regression models were used to infer the most likely transmission niches for each MRSA genetic classification and to describe the spatial epidemiology of MRSA in relation to social determinants. Specifically, we aimed to identify demographic and socioeconomic population traits that explain cross-area extra variation in HA- and CA-MRSA relative risks following adjustment for hospital attendance data. We explored the potential for associations with the English Indices of Deprivation 2010 (including the Index of Multiple Deprivation and several deprivation domains and subdomains) and the 2011 England and Wales census demographic and socioeconomic indicators (including numbers of households by deprivation dimension) and indicators of population health. Both CA-and HA-MRSA were associated with household deprivation (CA-MRSA relative risk [RR]: 1.72 [1.03-2.94]; HA-MRSA RR: 1.57 [1.06-2.33]), which was correlated with hospital attendance (Pearson correlation coefficient [PCC] = 0.76). HA-MRSA was also associated with poor health (RR: 1.10 [1.01-1.19]) and residence in communal care homes (RR: 1.24 [1.12-1.37]), whereas CA-MRSA was linked with household overcrowding (RR: 1.58 [1.04-2.41]) and wider barriers, which represent a combined score for household overcrowding, low income, and homelessness (RR: 1.76 [1.16-2.70]). CA-MRSA was also associated with recent immigration to the UK (RR: 1.77 [1.19-2.66]). For the area-level variation in RR for CA-MRSA, 28.67% was attributable to the spatial arrangement of target geographies, compared with only 0.09% for HA-MRSA. An advantage to our study is that it provided a representative sample of usual residents receiving care in the catchment areas. A limitation is that relationships apparent in aggregated data analyses cannot be assumed to operate at the individual level. CONCLUSIONS There was no evidence of community transmission of HA-MRSA strains, implying that HA-MRSA cases identified in the community originate from the hospital reservoir and are maintained by frequent attendance at health care facilities. In contrast, there was a high risk of CA-MRSA in deprived areas linked with overcrowding, homelessness, low income, and recent immigration to the UK, which was not explainable by health care exposure. Furthermore, areas adjacent to these deprived areas were themselves at greater risk of CA-MRSA, indicating community transmission of CA-MRSA. This ongoing community transmission could lead to CA-MRSA becoming the dominant strain types carried by patients admitted to hospital, particularly if successful hospital-based MRSA infection control programmes are maintained. These results suggest that community infection control programmes targeting transmission of CA-MRSA will be required to control MRSA in both the community and hospital. These epidemiological changes will also have implications for effectiveness of risk-factor-based hospital admission MRSA screening programmes.
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Affiliation(s)
- Olga Tosas Auguet
- Centre for Clinical Infection and Diagnostics Research, Department of Infectious Diseases, King's College London and Guy's and St Thomas' NHS Foundation Trust, London, United Kingdom
- Centre for Tropical Medicine and Global Health, Nuffield Department of Clinical Medicine, University of Oxford, Oxford, United Kingdom
- * E-mail:
| | - Jason R. Betley
- Illumina, Cambridge Limited, Chesterford Research Park, Little Chesterford, Essex, United Kingdom
| | - Richard A. Stabler
- Department of Pathogen Molecular Biology, Faculty of Infectious and Tropical Diseases, London School of Hygiene and Tropical Medicine, London, United Kingdom
| | - Amita Patel
- Centre for Clinical Infection and Diagnostics Research, Department of Infectious Diseases, King's College London and Guy's and St Thomas' NHS Foundation Trust, London, United Kingdom
| | - Avgousta Ioannou
- Illumina, Cambridge Limited, Chesterford Research Park, Little Chesterford, Essex, United Kingdom
| | - Helene Marbach
- Centre for Clinical Infection and Diagnostics Research, Department of Infectious Diseases, King's College London and Guy's and St Thomas' NHS Foundation Trust, London, United Kingdom
| | - Pasco Hearn
- Centre for Clinical Infection and Diagnostics Research, Department of Infectious Diseases, King's College London and Guy's and St Thomas' NHS Foundation Trust, London, United Kingdom
| | - Anna Aryee
- Centre for Clinical Infection and Diagnostics Research, Department of Infectious Diseases, King's College London and Guy's and St Thomas' NHS Foundation Trust, London, United Kingdom
| | - Simon D. Goldenberg
- Centre for Clinical Infection and Diagnostics Research, Department of Infectious Diseases, King's College London and Guy's and St Thomas' NHS Foundation Trust, London, United Kingdom
| | - Jonathan A. Otter
- Centre for Clinical Infection and Diagnostics Research, Department of Infectious Diseases, King's College London and Guy's and St Thomas' NHS Foundation Trust, London, United Kingdom
| | - Nergish Desai
- Department of Medical Microbiology, King's Hospital NHS Foundation Trust, London, United Kingdom
| | - Tacim Karadag
- Department of Microbiology, University Hospital Lewisham, Lewisham and Greenwich NHS Trust, London, United Kingdom
| | - Chris Grundy
- Department of Social and Environmental Health Research, Faculty of Public Health and Policy, London School of Hygiene and Tropical Medicine, London, United Kingdom
| | - Michael W. Gaunt
- Department of Pathogen Molecular Biology, Faculty of Infectious and Tropical Diseases, London School of Hygiene and Tropical Medicine, London, United Kingdom
| | - Ben S. Cooper
- Centre for Tropical Medicine and Global Health, Nuffield Department of Clinical Medicine, University of Oxford, Oxford, United Kingdom
- Mahidol Oxford Tropical Medicine Research Unit (MORU), Bangkok, Thailand
| | - Jonathan D. Edgeworth
- Centre for Clinical Infection and Diagnostics Research, Department of Infectious Diseases, King's College London and Guy's and St Thomas' NHS Foundation Trust, London, United Kingdom
| | - Theodore Kypraios
- School of Mathematical Sciences, University Park, University of Nottingham, Nottingham, United Kingdom
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Stewart BJ, Gardiner T, Perry GJ, Tong SYC. Reduction in Staphylococcus aureus bacteraemia rates in patients receiving haemodialysis following alteration of skin antisepsis procedures. J Hosp Infect 2015; 92:191-3. [PMID: 26778135 DOI: 10.1016/j.jhin.2015.10.022] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2015] [Accepted: 10/20/2015] [Indexed: 10/22/2022]
Abstract
This study examined all cases of Staphylococcus aureus bacteraemia (SAB) in the haemodialysis cohort at the Royal Darwin Hospital, Australia over a seven-year period. Midway through this period, antisepsis for arteriovenous fistulae (AVF) and central venous catheters (CVC) changed from 0.5% chlorhexidine solution to 2% chlorhexidine solution. Rates of SAB episodes were calculated using registry data. Trends in SAB over time were analysed using an interrupted regression analysis. Following the change to 2% chlorhexidine, average SAB rates decreased by 68%, and it is estimated that 0.111 cases of SAB/patient-year were prevented. CVC-related SAB rates remained low throughout. These results support the use of 2% chlorhexidine in skin antisepsis for patients with AVF.
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Affiliation(s)
- B J Stewart
- Department of Nephrology, Royal Darwin Hospital, Darwin, Australia; Division of Medical Sciences, University of Oxford, Oxford, UK
| | - T Gardiner
- Infection Prevention and Management Unit, Royal Darwin Hospital, Darwin, Australia; Infection Control Unit, Queen Elizabeth II Hospital, Brisbane, Australia
| | - G J Perry
- Department of Nephrology, Royal Darwin Hospital, Darwin, Australia; Department of Nephrology, Royal Perth Hospital, Perth, Australia
| | - S Y C Tong
- Menzies School of Health Research, Darwin, Australia.
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Tong SYC, Davis JS, Eichenberger E, Holland TL, Fowler VG. Staphylococcus aureus infections: epidemiology, pathophysiology, clinical manifestations, and management. Clin Microbiol Rev 2015; 28:603-61. [PMID: 26016486 PMCID: PMC4451395 DOI: 10.1128/cmr.00134-14] [Citation(s) in RCA: 2790] [Impact Index Per Article: 310.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
Staphylococcus aureus is a major human pathogen that causes a wide range of clinical infections. It is a leading cause of bacteremia and infective endocarditis as well as osteoarticular, skin and soft tissue, pleuropulmonary, and device-related infections. This review comprehensively covers the epidemiology, pathophysiology, clinical manifestations, and management of each of these clinical entities. The past 2 decades have witnessed two clear shifts in the epidemiology of S. aureus infections: first, a growing number of health care-associated infections, particularly seen in infective endocarditis and prosthetic device infections, and second, an epidemic of community-associated skin and soft tissue infections driven by strains with certain virulence factors and resistance to β-lactam antibiotics. In reviewing the literature to support management strategies for these clinical manifestations, we also highlight the paucity of high-quality evidence for many key clinical questions.
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Affiliation(s)
- Steven Y C Tong
- Global and Tropical Health, Menzies School of Health Research, Darwin, Northern Territory, Australia
| | - Joshua S Davis
- Global and Tropical Health, Menzies School of Health Research, Darwin, Northern Territory, Australia
| | - Emily Eichenberger
- Division of Infectious Diseases, Department of Medicine, Duke University Medical Center, Durham, North Carolina, USA
| | - Thomas L Holland
- Division of Infectious Diseases, Department of Medicine, Duke University Medical Center, Durham, North Carolina, USA
| | - Vance G Fowler
- Division of Infectious Diseases, Department of Medicine, Duke University Medical Center, Durham, North Carolina, USA Duke Clinical Research Institute, Duke University Medical Center, Durham, North Carolina, USA
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Bergin SP, Holland TL, Fowler VG, Tong SYC. Bacteremia, Sepsis, and Infective Endocarditis Associated with Staphylococcus aureus. Curr Top Microbiol Immunol 2015; 409:263-296. [PMID: 26659121 DOI: 10.1007/82_2015_5001] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Bacteremia and infective endocarditis (IE) are important causes of morbidity and mortality associated with Staphylococcus aureus infections. Increasing exposure to healthcare, invasive procedures, and prosthetic implants has been associated with a rising incidence of S. aureus bacteremia (SAB) and IE since the late twentieth century. S. aureus is now the most common cause of bacteremia and IE in industrialized nations worldwide and is associated with excess mortality when compared to other pathogens. Central tenets of management include identification of complicated bacteremia, eradicating foci of infection, and, for many, prolonged antimicrobial therapy. Evolving multidrug resistance and limited therapeutic options highlight the many unanswered clinical questions and urgent need for further high-quality clinical research.
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Engelman D, Hofer A, Davis JS, Carapetis JR, Baird RW, Giffard PM, Holt DC, Tong SYC. Invasive Staphylococcus aureus Infections in Children in Tropical Northern Australia. J Pediatric Infect Dis Soc 2014; 3:304-11. [PMID: 26625450 DOI: 10.1093/jpids/piu013] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/17/2013] [Accepted: 01/20/2014] [Indexed: 11/14/2022]
Abstract
BACKGROUND Despite a high burden of staphylococcal skin disease in children and high incidence of Staphylococcus aureus bacteremia in adult Indigenous populations in northern Australia, there are few studies describing incidence or clinical information of invasive S aureus (ISA) infections in children. METHODS We conducted a retrospective review for all cases of S aureus bacteremia and sterile site infections, for children under 15 years, in northern Australia over a 4-year period (2007-2010). Cases were categorized as neonatal (<28 days) and pediatric (≥28 days). RESULTS Forty-four cases (9 neonatal, 35 pediatric) were identified. The annual incidence of ISA was 27.9 cases per 100 000 population. Among pediatric cases, the annual incidence was significantly higher in the Indigenous (46.6) compared with the non-Indigenous (4.4) population (IRR: 10.6 [95% confidence interval, 3.8-41.4]). Pediatric infections were predominantly community-associated (86%). Clinical infection sites included osteoarticular (66%), pleuropulmonary (29%), and endocarditis (9%), and multifocal disease was common (20%). Eighty-three percent of pediatric cases presented with sepsis; 34% resulted in intensive care admission. Neonatal cases were all born prematurely; 89% were late-onset infections. Overall, 27% of infections were due to methicillin-resistant S aureus (MRSA). Compared with methicillin-sensitive S aureus (MSSA), there was no difference in severity or presentation in pediatric MRSA cases, but a higher proportion of MRSA cases were readmitted. CONCLUSIONS The annual incidence of ISA infection in this study is among the highest described, largely due to a disproportionate burden in Indigenous children. Infections are frequently severe and infection with MRSA is common. Children presenting with suspected ISA in this region should be treated empirically for MRSA.
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Affiliation(s)
- Daniel Engelman
- Royal Darwin Hospital, Darwin, Australia; Centre for International Child Health, University of Melbourne, Australia
| | | | - Joshua S Davis
- Royal Darwin Hospital, Darwin, Australia; Menzies School of Health Research, Darwin, Australia
| | - Jonathan R Carapetis
- Menzies School of Health Research, Darwin, Australia; Telethon Institute for Child Health Research, University of Western Australia, Perth
| | | | | | | | - Steven Y C Tong
- Royal Darwin Hospital, Darwin, Australia; Menzies School of Health Research, Darwin, Australia
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Ravishankar A, Singh S, Rai S, Sharma N, Gupta S, Thawani R. Socio-economic profile of patients with community-acquired skin and soft tissue infections in Delhi. Pathog Glob Health 2014; 108:279-82. [PMID: 25292293 DOI: 10.1179/2047773214y.0000000154] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022] Open
Abstract
AIM To study the socio-demographic and clinical profile of patients with community-acquired skin and soft tissue infections (CA-SSTIs). METHODS This study was a cross sectional, observational study. Patients with CA-SSTIs (ICD-10 L00-L08) were enrolled from February to August 2013. Clinical and microbiological data of all patients were recorded. Socioeconomic status (SES) of each patient was calculated using the Modified Kuppuswamy Scale. RESULTS Seventy-three patients were studied, of whom 45 had SSTIs caused by Staphylococcus aureus. Of the 45, 11 (24%) were methicillin-resistant S. aureus (MRSA) and 34 (76%) were methicillin-sensitive S. aureus (MSSA). Patients with MRSA infections had significantly lower monthly income and lower educational status than those with MSSA infections. However, SES was not significantly different in the two groups. CONCLUSION S. aureus was the most common cause of CA-SSTIs, of which, MRSA was isolated in 24% of the cases. Patients with MRSA SSTIs had significantly lesser family income and lower education levels compared to patients with MSSA SSTIs.
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Williamson D, Coombs G, Nimmo G. Staphylococcus aureus ‘Down Under’: contemporary epidemiology of S. aureus in Australia, New Zealand, and the South West Pacific. Clin Microbiol Infect 2014; 20:597-604. [DOI: 10.1111/1469-0691.12702] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2014] [Revised: 05/27/2014] [Accepted: 05/28/2014] [Indexed: 12/31/2022]
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Jenney A, Holt D, Ritika R, Southwell P, Pravin S, Buadromo E, Carapetis J, Tong S, Steer A. The clinical and molecular epidemiology of Staphylococcus aureus infections in Fiji. BMC Infect Dis 2014; 14:160. [PMID: 24655406 PMCID: PMC3998116 DOI: 10.1186/1471-2334-14-160] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2013] [Accepted: 03/13/2014] [Indexed: 11/27/2022] Open
Abstract
Background There are few data describing the microbiology and genetic typing of Staphylococcus aureus that cause infections in developing countries. Methods In this study we observed S. aureus infections in Pacific Island nation of Fiji in both the community and hospital setting with an emphasis on clonal complex (CC) genotyping and antimicrobial susceptibility. Results S. aureus was commonly found in impetigo lesions of school children and was recovered from 57% of impetigo lesions frequently in conjunction with group A streptococcal infection. Methicillin-resistant S. aureus (MRSA) comprised 7% (20/299) of isolates and were all non-multi-resistant and all genotyped as CC1. In contrast, there was a diverse selection of 17 CCs among the 105 genotyped methicillin-susceptible S.aureus (MSSA) strains. Isolates of the rare, phylogenetically divergent and non-pigmented CC75 lineage (also called S.argenteus) were found in Fiji. From hospitalized patients the available 36 MRSA isolates from a 9-month period were represented by five CCs. The most common CCs were CC1 and CC239. CC1 is likely to be a community-acquired strain, reflecting what was found in the school children, whereas the CC239 is the very successful multi-drug resistant MRSA nosocomial lineage. Of 17 MSSA isolates, 59% carried genes for Panton-Valentine leukocidin. The S. aureus bacteraemia incidence rate of 50 per 100,000 population is among the highest reported in the literature and likely reflects the high overall burden of staphylococcal infections in this population. Conclusions S. aureus is an important cause of disease in Fiji and there is considerable genotypic diversity in community skin infections in Fijian schoolchildren. Community acquired- (CA)- MRSA is present at a relatively low prevalence (6.7%) and was solely to CC1 (CA-MRSA). The globally successful CC239 is also a significant pathogen in Fiji.
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Affiliation(s)
- Adam Jenney
- Fiji Group A Streptococcal Project, University of Melbourne, Victoria, Australia.
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Williamson DA, Lim A, Thomas MG, Baker MG, Roberts SA, Fraser JD, Ritchie SR. Incidence, trends and demographics of Staphylococcus aureus infections in Auckland, New Zealand, 2001-2011. BMC Infect Dis 2013; 13:569. [PMID: 24299298 PMCID: PMC4219404 DOI: 10.1186/1471-2334-13-569] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2013] [Accepted: 11/18/2013] [Indexed: 11/10/2022] Open
Abstract
Background New Zealand has a higher incidence of Staphylococcus aureus disease than other developed countries, with significant sociodemographic variation in incidence rates. In contrast to North America, the majority of disease is due to methicillin-susceptible S. aureus (MSSA), although relatively little is known about the comparative demographics of MSSA and methicillin-resistant S. aureus (MRSA) infections in New Zealand. Methods Our objectives were to describe the trends, incidence and patient demographics of all S. aureus infections in patients presenting to our institution between 2001 and 2011, and compare the epidemiology of MSSA and MRSA infections. We identified all patients with S. aureus infections over the study period. A unique S. aureus infection was defined as the first positive S. aureus culture taken from the same patient within a thirty-day period. Standard definitions were used to classify episodes into community- or healthcare-associated S. aureus infection. Results There were 16,249 S. aureus infections over the study period. The incidence increased significantly over the study period from 360 to 412 per 100,000 population (P < 0.001), largely driven by an increase in community-associated non-invasive MSSA infections. When compared with MSSA infections, patients with non-multiresistant MRSA infections were more likely to be older, have hospital-onset infections and be Māori or Pacific Peoples. Conclusions Our work provides valuable baseline data on the epidemiology and trends of S. aureus infections in New Zealand. The significant increase in community-associated S. aureus infections is of public health importance. Future studies should investigate the reasons underlying this concerning trend.
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Affiliation(s)
- Deborah A Williamson
- Faculty of Medical and Health Sciences, University of Auckland, Auckland, New Zealand.
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Williamson DA, Lim A, Wiles S, Roberts SA, Freeman JT. Population-based incidence and comparative demographics of community-associated and healthcare-associated Escherichia coli bloodstream infection in Auckland, New Zealand, 2005-2011. BMC Infect Dis 2013; 13:385. [PMID: 23964864 PMCID: PMC3849480 DOI: 10.1186/1471-2334-13-385] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2013] [Accepted: 08/08/2013] [Indexed: 11/16/2022] Open
Abstract
Background Escherichia coli is a major human pathogen, both in community and healthcare settings. To date however, relatively few studies have defined the population burden of E. coli bloodstream infections. Such information is important in informing strategies around treatment and prevention of these serious infections. Against this background, we performed a retrospective, population-based observational study of all cases of E. coli bacteremia in patients presenting to our hospital between January 2005 and December 2011. Methods Auckland District Health Board is a tertiary-level, university-affiliated institution serving a population of approximately 500,000, within a larger metropolitan population of 1.4 million. We identified all patients with an episode of bloodstream infection due to E. coli over the study period. A unique episode was defined as the first positive E. coli blood culture taken from the same patient within a thirty-day period. Standard definitions were used to classify episodes into community- or healthcare-associated E. coli bacteremia. Demographic information was obtained for all patients, including: age; gender; ethnicity; length of stay (days); requirement for intensive care admission and all-cause, in-patient mortality. Results A total of 1507 patients had a unique episode of E. coli bacteremia over the study period. The overall average annual incidence of E. coli bacteremia was 52 per 100,000 population, and was highest in the under one year and over 65-year age groups. When stratified by ethnicity, rates were highest in Pacific Peoples and Māori (83 and 62 per 100,000 population respectively). The incidence of community-onset E. coli bacteremia increased significantly over the study period. The overall in-hospital mortality rate was 9% (135/1507), and was significantly higher in patients who had a hospital-onset E. coli bacteremia. Conclusions Our work provides valuable baseline data on the incidence of E. coli bacteremia in our locale. The incidence was higher that that described from other developed countries, with significant demographic variation, most notably in ethnic-specific incidence rates. Future work should assess the possible reasons for this disparity.
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Affiliation(s)
- Deborah A Williamson
- Faculty of Medical and Health Sciences, University of Auckland, Auckland, New Zealand.
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Keynan Y, Rubinstein E. Staphylococcus aureus Bacteremia, Risk Factors, Complications, and Management. Crit Care Clin 2013; 29:547-62. [DOI: 10.1016/j.ccc.2013.03.008] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
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