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Kizu J, Graham M, Liu W. Potential Serological Misdiagnosis of Barmah Forest Virus and Ross River Virus Diseases as Chikungunya Virus Infections in Australia: Comparison of ELISA with Neutralization Assay Results. Viruses 2024; 16:384. [PMID: 38543750 PMCID: PMC10974935 DOI: 10.3390/v16030384] [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: 11/01/2023] [Revised: 02/22/2024] [Accepted: 02/27/2024] [Indexed: 05/23/2024] Open
Abstract
To evaluate the frequency of errors in the diagnosis of medical laboratory-diagnosed Chikungunya virus (CHIKV) infections in Australia, we studied 42 laboratory-diagnosed CHIKV serum samples from one Queensland medical laboratory by ELISA IgG/IgM and measured the specific neutralization antibodies (Nab) against Barmah Forest virus (BFV), CHIKV and Ross River virus (RRV). The sero-positivity rates for the sera were as follows: anti-BFV IgG+ 19% (8/42), IgM+ 2.4% (1/42) and Nab+ 16.7% (7/42); anti-CHIKV IgG+ 90.5% (38/42), IgM+ 21.4% (9/42) and Nab+ 90.5% (38/42); anti-RRV IgG+ 88.1% (37/42), IgM+ 28.6% (12/42) and Nab+ 83.2% (35/42), respectively. Among the samples with multiple antibody positivity, 2.4% (1/42) showed triple ELISA IgM+, and 14.3% (6/42) exhibited double IgM RRV+CHIKV+; 9.5% (4/42) showed triple IgG+, 76.2% (32/42) displayed double IgG RRV+CHIKV+, 4.8% (2/42) showed IgG BFV+RRV+ and 4.8% (2/42) showed IgG BFV++CHIKV+; and 9.5% (4/42) showed triple Nab+ and 69% (29/42) exhibited double Nab RRV+CHIKV+, respectively. Our analysis of the single-virus infection control Nab results suggested no cross-neutralization between RRV and BFV, and only mild cross-neutralization between CHIKV and RRV, BFV and CHIKV, all with a ≥4-fold Nab titre ratio difference between the true virus infection and cross-reactivity counterpart virus. Subsequently, we re-diagnosed these 42 patients as 1 BFV+, 8 CHIKV+ and 23 RRV+ single-virus infections, along with five RRV+/BFV+ and four RRV+/CHIKV+ double infections, and one possible RRV+/BFV+ or RRV+CHIKV+, respectively. These findings suggests that a substantial proportion of medically attended RRV and BFV infections were misdiagnosed as CHIKV infections, highlighting the imperative need for diagnostic laboratory tests capable of distinguishing between CHIKV infections and actively co-circulating RRV and BFV. For a correct diagnosis, it is crucial to consider reliable diagnostic methods such as the neutralization assay to exclude RRV and BFV.
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Affiliation(s)
- Joanne Kizu
- Australian Defence Force Malaria and Infectious Disease Institute, Weary Dunlop Drive, Gallipoli Barracks, Enoggera, QLD 4051, Australia; (J.K.); (M.G.)
| | - Melissa Graham
- Australian Defence Force Malaria and Infectious Disease Institute, Weary Dunlop Drive, Gallipoli Barracks, Enoggera, QLD 4051, Australia; (J.K.); (M.G.)
- Queensland Institute of Medical Research-Berghofer Medical Research Institute, Herston, Brisbane, QLD 4006, Australia
| | - Wenjun Liu
- Australian Defence Force Malaria and Infectious Disease Institute, Weary Dunlop Drive, Gallipoli Barracks, Enoggera, QLD 4051, Australia; (J.K.); (M.G.)
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Giménez-Richarte Á, Ortiz de Salazar MI, Giménez-Richarte MP, Collado M, Fernández PL, Clavijo C, Navarro L, Arbona C, Marco P, Ramos-Rincon JM. Transfusion-transmitted arboviruses: Update and systematic review. PLoS Negl Trop Dis 2022; 16:e0010843. [PMID: 36201547 PMCID: PMC9578600 DOI: 10.1371/journal.pntd.0010843] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2022] [Revised: 10/18/2022] [Accepted: 09/23/2022] [Indexed: 11/07/2022] Open
Abstract
Background The detection of the first cases of transfusion-transmitted West Nile virus in 2002 posed a new challenge for transfusion safety. Institutions like the World Health Organization have stated that blood transfusion centers need to know the epidemiology of the different emerging infectious agents and their impact on blood transfusion. The aim of the study is to review the published cases of arbovirus transmission through transfusion of blood or blood components and to analyze their main clinical and epidemiological characteristics. Material and methods Systematic literature searches were conducted in MEDLINE, Embase and Scopus. Pairs of review authors selected a variety of scientific publications reporting cases of transfusion-transmitted arboviruses. Main clinical and epidemiological characteristics were reviewed of the cases described. The study protocol was registered in PROSPERO CRD42021270355. Results A total of 74 cases of transfusion-transmitted infections were identified from 10 arboviruses: West Nile virus (n = 42), dengue virus (n = 18), Zika virus (n = 3), yellow fever vaccine virus (n = 3), tick-borne encephalitis virus (n = 2), Japanese encephalitis virus (n = 2), Powassan virus (n = 1), St. Louis encephalitis virus (n = 1), Ross River virus (n = 1) and Colorado tick fever virus (n = 1). The blood component most commonly involved was red blood cells (N = 35, 47.3%; 95% confidence interval [CI] 35.9% to 58.7%). In 54.1% (N = 40; 95% CI: 42.7%-65.47%) of the cases, the recipient was immunosuppressed. Transmission resulted in death in 18.9% (N = 14; 95% CI: 10.0%-27.8%) of the recipients. In addition, 18 additional arboviruses were identified with a potential threat to transfusion safety. Discussion In the last 20 years, the number of published cases of transfusion-transmitted arboviruses increased notably, implicating new arboviruses. In addition, a significant number of arboviruses that may pose a threat to transfusion safety were detected. In the coming years, it is expected that transmission of arboviruses will continue to expand globally. It is therefore essential that all responsible agencies prepare for this potential threat to transfusion safety. The transfusion of blood and blood components entails some risks and potential complications, chief among them the transmission of infectious agents. Organizations like the American Association of Blood Banks have warned of the risks posed by emerging and re-emerging viruses for transfusion safety and have classified transmission of several arboviruses as a high or very high risk to the transfusion of blood and blood components. Following recommendations by the World Health Organization (WHO), this study aims to enable safe blood transfusion services, by making available the latest updated information of transfusion-transmitted arboviruses and comprehensive knowledge of the current epidemiology of reported cases. Research revealed case reports of transfusion transmission of 10 arboviruses, with West Nile virus and dengue virus as the most prevalent. Main clinical characteristics of reported cases were collected, including the type of blood component transfused and the state of immunosuppression of the recipient. Research also revealed 18 additional arboviruses with potential risk of transmission through other direct transmission routes. This systematic review provides an updated overview of the clinical characteristics of reported cases of transfusion-transmitted arboviruses. It is the most complete record published to date that assesses the risk posed by arboviruses to blood transfusion.
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Affiliation(s)
| | | | | | - Miriam Collado
- Valencian Community Blood Transfusion Center, Valencia, Spain
| | | | - Carlos Clavijo
- Valencian Community Blood Transfusion Center, Valencia, Spain
| | - Laura Navarro
- Valencian Community Blood Transfusion Center, Valencia, Spain
| | - Cristina Arbona
- Valencian Community Blood Transfusion Center, Valencia, Spain
| | - Pascual Marco
- Service of Hematology, General- University Hospital of Alicante-ISABIAL. Alicante, Spain
- Clinical Medicine Department, Miguel Hernandez University of Elche, Alicante, Spain
| | - Jose-Manuel Ramos-Rincon
- Clinical Medicine Department, Miguel Hernandez University of Elche, Alicante, Spain
- * E-mail: (AG-R); (J-MR-R)
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Colbert CY, French JC, Brateanu A, Pacheco SE, Khatri SB, Sapatnekar S, Vacharathit V, Pien LC, Prelosky-Leeson A, LaRocque R, Mark B, Salas RN. An Examination of the Intersection of Climate Change, the Physician Specialty Workforce, and Graduate Medical Education in the U.S. TEACHING AND LEARNING IN MEDICINE 2022; 34:329-340. [PMID: 34011226 DOI: 10.1080/10401334.2021.1913417] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/17/2020] [Revised: 04/07/2021] [Accepted: 04/25/2021] [Indexed: 06/12/2023]
Abstract
Issue: As U.S. healthcare systems plan for future physician workforce needs, the systemic impacts of climate change, a worldwide environmental and health crisis, have not been factored in. The current focus on increasing the number of trained physicians and optimizing efficiencies in healthcare delivery may be insufficient. Graduate medical education (GME) priorities and training should be considered in order to prepare a climate-educated physician workforce. Evidence: We used a holistic lens to explore the available literature regarding the intersection of future physician workforce needs, GME program priorities, and resident education within the larger context of climate change. Our interinstitutional, transdisciplinary team brought perspectives from their own fields, including climate science, climate and health research, and medical education to provide recommendations for building a climate-educated physician workforce. Implications: Acknowledging and preparing for the effects of climate change on the physician workforce will require identification of workforce gaps, changes to GME program priorities, and education of trainees on the health and societal impacts of climate change. Alignment of GME training with workforce considerations and climate action and adaptation initiatives will be critical in ensuring the U.S. has a climate-educated physician workforce capable of addressing health and healthcare system challenges. This article offers a number of recommendations for physician workforce priorities, resident education, and system-level changes to better prepare for the health and health system impacts of climate change.
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Affiliation(s)
- Colleen Y Colbert
- Cleveland Clinic Lerner College of Medicine of Case, Western Reserve University, Cleveland, Ohio, USA
- Office of Educator and Scholar Development, Education Institute, Cleveland Clinic, Cleveland, Ohio, USA
| | - Judith C French
- Cleveland Clinic Lerner College of Medicine of Case, Western Reserve University, Cleveland, Ohio, USA
- General Surgery Residency Program, Digestive Disease and Surgery Institute, Cleveland Clinic, Cleveland, Ohio, USA
| | - Andrei Brateanu
- Cleveland Clinic Lerner College of Medicine of Case, Western Reserve University, Cleveland, Ohio, USA
- Internal Medicine Residency Program, Cleveland Clinic, Cleveland, Ohio, USA
| | - Susan E Pacheco
- Department of Pediatrics, University of Texas McGovern Medical School, Houston, Texas, USA
| | - Sumita B Khatri
- Cleveland Clinic Lerner College of Medicine of Case, Western Reserve University, Cleveland, Ohio, USA
- Respiratory Institute at Cleveland Clinic, Cleveland, Ohio, USA
| | - Suneeti Sapatnekar
- Cleveland Clinic Lerner College of Medicine of Case, Western Reserve University, Cleveland, Ohio, USA
- Robert T. Tomsich Pathology and Laboratory Medicine Institute, Cleveland Clinic, Cleveland, Ohio, USA
| | - Voranaddha Vacharathit
- General Surgery Residency Program, Digestive Disease and Surgery Institute, Cleveland Clinic, Cleveland, Ohio, USA
| | - Lily C Pien
- Cleveland Clinic Lerner College of Medicine of Case, Western Reserve University, Cleveland, Ohio, USA
- Office of Educator and Scholar Development, Education Institute, Cleveland Clinic, Cleveland, Ohio, USA
- Department of Allergy and Clinical Immunology, Respiratory Institute, Cleveland Clinic, Cleveland, Ohio, USA
| | - Allison Prelosky-Leeson
- Office of Educator and Scholar Development, Education Institute, Cleveland Clinic, Cleveland, Ohio, USA
| | - Regina LaRocque
- Harvard Medical School, Boston, Massachusetts, USA
- Division of Infectious Disease, Massachusetts General Hospital, Boston, Massachusetts, USA
| | - Bryan Mark
- Department of Geography and Byrd Polar and Climate Research Center, Ohio State University, Columbus, Ohio, USA
| | - Renee N Salas
- Harvard Medical School, Boston, Massachusetts, USA
- Department of Emergency Medicine, Massachusetts General Hospital, Boston, Massachusetts, USA
- Harvard Global Health Institute, Cambridge, Massachusetts, USA
- Center for Climate, Health, and the Global Environment at the Harvard T.H. Chan School of Public Health, Boston, Massachusetts, USA
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Madzokere ET, Qian W, Webster JA, Walker DMH, Lim EXY, Harley D, Herrero LJ. Human Seroprevalence for Dengue, Ross River, and Barmah Forest viruses in Australia and the Pacific: A systematic review spanning seven decades. PLoS Negl Trop Dis 2022; 16:e0010314. [PMID: 35486651 PMCID: PMC9094520 DOI: 10.1371/journal.pntd.0010314] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2021] [Revised: 05/11/2022] [Accepted: 03/08/2022] [Indexed: 11/18/2022] Open
Abstract
Background
Dengue (DENV), Ross River (RRV) and Barmah Forest viruses (BFV) are the most common human arboviral infections in Australia and the Pacific Island Countries and Territories (PICTs) and are associated with debilitating symptoms. All are nationally notifiable in Australia, but routine surveillance is limited to a few locations in the PICTs. Understanding the level of human exposure to these viruses can inform disease management and mitigation strategies. To assess the historic and current seroprevalence of DENV, RRV and BFV in Australia and the PICTs we conducted a systematic literature review of all published quantitative serosurveys.
Methodology and principal findings
The Preferred Reporting of Items for Systematic Reviews and Meta-Analyses procedures were adopted to produce a protocol to systematically search for published studies reporting the seroprevalence of DENV, RRV and BFV in Australia and the PICTs. Data for author, research year, location, study population, serosurvey methods and positive tests were extracted. A total of 41 papers, reporting 78 serosurveys of DENV, RRV and BFV including 62,327 samples met the inclusion criteria for this review. Seroprevalence varied depending on the assay used, strategy of sample collection and location of the study population. Significant differences were observed in reported seropositivity depending on the sample collection strategy with clinically targeted sampling reporting the highest seroprevalence across all three viruses. Non-stratified seroprevalence showed wide ranges in reported positivity with DENV 0.0% – 95.6%, RRV 0.0% – 100.0%, and BFV 0.3% – 12.5%. We discuss some of the causes of variation including serological methods used, selection bias in sample collection including clinical or environmental associations, and location of study site. We consider the extent to which serosurveys reflect the epidemiology of the viruses and provide broad recommendations regarding the conduct and reporting of arbovirus serosurveys.
Conclusions and significance
Human serosurveys provide important information on the extent of human exposure to arboviruses across: (1) time, (2) place, and (3) person (e.g., age, gender, clinical presentation etc). Interpreting results obtained at these scales has the potential to inform us about transmission cycles, improve diagnostic surveillance, and mitigate future outbreaks. Future research should streamline methods and reduce bias to allow a better understanding of the burden of these diseases and the factors associated with seroprevalence. Greater consideration should be given to the interpretation of seroprevalence in studies, and increased rigour applied in linking seroprevalence to transmission dynamics.
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Affiliation(s)
- Eugene T. Madzokere
- Institute for Glycomics, Griffith University, Gold Coast Campus, Southport, Australia
| | - Wei Qian
- Centre for Clinical Research, University of Queensland, Brisbane, Australia
| | - Julie A. Webster
- Institute for Glycomics, Griffith University, Gold Coast Campus, Southport, Australia
- QIMR Berghofer Medical Research Institute, Brisbane, Australia
| | - Daniel M. H. Walker
- Institute for Glycomics, Griffith University, Gold Coast Campus, Southport, Australia
| | - Elisa X. Y. Lim
- Institute for Glycomics, Griffith University, Gold Coast Campus, Southport, Australia
| | - David Harley
- Centre for Clinical Research, University of Queensland, Brisbane, Australia
| | - Lara J. Herrero
- Institute for Glycomics, Griffith University, Gold Coast Campus, Southport, Australia
- * E-mail:
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Kain MP, Skinner EB, van den Hurk AF, McCallum H, Mordecai EA. Physiology and ecology combine to determine host and vector importance for Ross River virus. eLife 2021; 10:e67018. [PMID: 34414887 PMCID: PMC8457839 DOI: 10.7554/elife.67018] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2021] [Accepted: 08/19/2021] [Indexed: 01/19/2023] Open
Abstract
Identifying the key vector and host species that drive the transmission of zoonotic pathogens is notoriously difficult but critical for disease control. We present a nested approach for quantifying the importance of host and vectors that integrates species' physiological competence with their ecological traits. We apply this framework to a medically important arbovirus, Ross River virus (RRV), in Brisbane, Australia. We find that vertebrate hosts with high physiological competence are not the most important for community transmission; interactions between hosts and vectors largely underpin the importance of host species. For vectors, physiological competence is highly important. Our results identify primary and secondary vectors of RRV and suggest two potential transmission cycles in Brisbane: an enzootic cycle involving birds and an urban cycle involving humans. The framework accounts for uncertainty from each fitted statistical model in estimates of species' contributions to transmission and has has direct application to other zoonotic pathogens.
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Affiliation(s)
- Morgan P Kain
- Department of Biology, Stanford UniversityStanfordUnited States
- Natural Capital Project, Woods Institute for the Environment, Stanford UniversityStanfordUnited States
| | - Eloise B Skinner
- Department of Biology, Stanford UniversityStanfordUnited States
- Centre for Planetary Health and Food Security, Griffith UniversityGold CoastAustralia
| | - Andrew F van den Hurk
- Public Health Virology, Forensic and Scientific Services, Department of HealthBrisbaneAustralia
| | - Hamish McCallum
- Centre for Planetary Health and Food Security, Griffith UniversityGold CoastAustralia
| | - Erin A Mordecai
- Department of Biology, Stanford UniversityStanfordUnited States
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6
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Ross River Virus Infection: A Cross-Disciplinary Review with a Veterinary Perspective. Pathogens 2021; 10:pathogens10030357. [PMID: 33802851 PMCID: PMC8002670 DOI: 10.3390/pathogens10030357] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2021] [Revised: 03/15/2021] [Accepted: 03/15/2021] [Indexed: 02/06/2023] Open
Abstract
Ross River virus (RRV) has recently been suggested to be a potential emerging infectious disease worldwide. RRV infection remains the most common human arboviral disease in Australia, with a yearly estimated economic cost of $4.3 billion. Infection in humans and horses can cause chronic, long-term debilitating arthritogenic illnesses. However, current knowledge of immunopathogenesis remains to be elucidated and is mainly inferred from a murine model that only partially resembles clinical signs and pathology in human and horses. The epidemiology of RRV transmission is complex and multifactorial and is further complicated by climate change, making predictive models difficult to design. Establishing an equine model for RRV may allow better characterization of RRV disease pathogenesis and immunology in humans and horses, and could potentially be used for other infectious diseases. While there are no approved therapeutics or registered vaccines to treat or prevent RRV infection, clinical trials of various potential drugs and vaccines are currently underway. In the future, the RRV disease dynamic is likely to shift into temperate areas of Australia with longer active months of infection. Here, we (1) review the current knowledge of RRV infection, epidemiology, diagnostics, and therapeutics in both humans and horses; (2) identify and discuss major research gaps that warrant further research.
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Zaid A, Burt FJ, Liu X, Poo YS, Zandi K, Suhrbier A, Weaver SC, Texeira MM, Mahalingam S. Arthritogenic alphaviruses: epidemiological and clinical perspective on emerging arboviruses. THE LANCET. INFECTIOUS DISEASES 2020; 21:e123-e133. [PMID: 33160445 DOI: 10.1016/s1473-3099(20)30491-6] [Citation(s) in RCA: 34] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/23/2019] [Revised: 05/14/2020] [Accepted: 05/19/2020] [Indexed: 12/19/2022]
Abstract
Mosquito-borne viruses, or arboviruses, have been part of the infectious disease landscape for centuries, and are often, but not exclusively, endemic to equatorial and subtropical regions of the world. The past two decades saw the re-emergence of arthritogenic alphaviruses, a genus of arboviruses that includes several members that cause severe arthritic disease. Recent outbreaks further highlight the substantial public health burden caused by these viruses. Arthritogenic alphaviruses are often reported in the context of focused outbreaks in specific regions (eg, Caribbean, southeast Asia, and Indian Ocean) and cause debilitating acute disease that can extend to chronic manifestations for years after infection. These viruses are classified among several antigenic complexes, span a range of hosts and mosquito vectors, and can be distributed along specific geographical locations. In this Review, we highlight key features of alphaviruses that are known to cause arthritic disease in humans and outline the present findings pertaining to classification, immunogenicity, pathogenesis, and experimental approaches aimed at limiting disease manifestations. Although the most prominent alphavirus outbreaks in the past 15 years featured chikungunya virus, and a large body of work has been dedicated to understanding chikungunya disease mechanisms, this Review will instead focus on other arthritogenic alphaviruses that have been identified globally and provide a comprehensive appraisal of present and future research directions.
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Affiliation(s)
- Ali Zaid
- Emerging Viruses, Inflammation, and Therapeutics Group, Menzies Health Institute Queensland, Griffith University, Gold Coast, QLD, Australia
| | - Felicity J Burt
- Division of Virology, National Health Laboratory Services, Bloemfontein, South Africa; Division of Virology, Faculty of Health Sciences, University of the Free State, Bloemfontein, South Africa
| | - Xiang Liu
- Emerging Viruses, Inflammation, and Therapeutics Group, Menzies Health Institute Queensland, Griffith University, Gold Coast, QLD, Australia
| | - Yee Suan Poo
- Emerging Viruses, Inflammation, and Therapeutics Group, Menzies Health Institute Queensland, Griffith University, Gold Coast, QLD, Australia
| | - Keivan Zandi
- Laboratory of Biochemical Pharmacology, Department of Pediatrics, Emory University, Atlanta, GA, USA
| | - Andreas Suhrbier
- Inflammation Biology Laboratory, QIMR Berghofer Medical Research Institute, Brisbane, QLD, Australia
| | - Scott C Weaver
- Department of Microbiology and Immunology and Institute for Human Infections and Immunity, The University of Texas Medical Branch, Galveston, TX, USA
| | - Mauro M Texeira
- Department of Biochemistry and Immunology, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | - Suresh Mahalingam
- Emerging Viruses, Inflammation, and Therapeutics Group, Menzies Health Institute Queensland, Griffith University, Gold Coast, QLD, Australia.
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Gyawali N, Taylor-Robinson AW, Bradbury RS, Pederick W, Faddy HM, Aaskov JG. Neglected Australian Arboviruses Associated With Undifferentiated Febrile Illnesses. Front Microbiol 2019; 10:2818. [PMID: 31866981 PMCID: PMC6908948 DOI: 10.3389/fmicb.2019.02818] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2019] [Accepted: 11/20/2019] [Indexed: 12/28/2022] Open
Abstract
Infections with commonly occurring Australian arthropod-borne arboviruses such as Ross River virus (RRV) and Barmah Forest virus (BFV) are diagnosed routinely by pathology laboratories in Australia. Others, such as Murray Valley encephalitis (MVEV) and Kunjin (KUNV) virus infections may be diagnosed by specialist reference laboratories. Although Alfuy (ALFV), Edge Hill (EHV), Kokobera (KOKV), Sindbis (SINV), and Stratford (STRV) viruses are known to infect humans in Australia, all are considered 'neglected.' The aetiologies of approximately half of all cases of undifferentiated febrile illnesses (UFI) in Australia are unknown and it is possible that some of these are caused by the neglected arboviruses. The aims of this study were to determine the seroprevalence of antibodies against several neglected Australian arboviruses among residents of Queensland, north-east Australia, and to ascertain whether any are associated with UFI. One hundred age- and sex-stratified human plasma samples from blood donors in Queensland were tested to determine the prevalence of neutralising antibodies against ALFV, BFV, EHV, KOKV, KUNV, MVEV, RRV, SINV, and STRV. The seroconversion rates for RRV and BFV infections were 1.3 and 0.3% per annum, respectively. The prevalence of antibodies against ALFV was too low to enable estimates of annual infection rates to be determined, but the values obtained for other neglected viruses, EHV (0.1%), KOKV (0.05%), and STRV (0.05%), indicated that the numbers of clinical infections occurring with these agents are likely to be extremely small. This was borne out by the observation that only 5.7% of a panel of 492 acute phase sera from UFI patients contained IgM against any of these arboviruses, as detected by an indirect immunofluorescence assay. While none of these neglected arboviruses appear to be a cause of a significant number of UFIs in Australia at this time, each has the potential to emerge as a significant human pathogen if there are changes to their ecological niches.
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Affiliation(s)
- Narayan Gyawali
- Institute of Health and Biomedical Innovation, Queensland University of Technology, Brisbane, QLD, Australia
- School of Health, Medical and Applied Sciences, Central Queensland University, Rockhampton, QLD, Australia
- Mosquito Control Laboratory, QIMR Berghofer Medical Research Institute, Brisbane, QLD, Australia
| | - Andrew W. Taylor-Robinson
- School of Health, Medical and Applied Sciences, Central Queensland University, Brisbane, QLD, Australia
| | - Richard S. Bradbury
- School of Health, Medical and Applied Sciences, Central Queensland University, Rockhampton, QLD, Australia
| | - Wayne Pederick
- School of Health, Medical and Applied Sciences, Central Queensland University, Rockhampton, QLD, Australia
| | - Helen M. Faddy
- Research and Development, Australian Red Cross Blood Service, Brisbane, QLD, Australia
| | - John G. Aaskov
- Institute of Health and Biomedical Innovation, Queensland University of Technology, Brisbane, QLD, Australia
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9
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Clean bill of health? Towards an understanding of health risks posed by urban ibis. JOURNAL OF URBAN ECOLOGY 2019. [DOI: 10.1093/jue/juz006] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023] Open
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Stephenson EB, Peel AJ, Reid SA, Jansen CC, McCallum H. The non-human reservoirs of Ross River virus: a systematic review of the evidence. Parasit Vectors 2018; 11:188. [PMID: 29554936 PMCID: PMC5859426 DOI: 10.1186/s13071-018-2733-8] [Citation(s) in RCA: 52] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2017] [Accepted: 02/20/2018] [Indexed: 11/10/2022] Open
Abstract
Understanding the non-human reservoirs of zoonotic pathogens is critical for effective disease control, but identifying the relative contributions of the various reservoirs of multi-host pathogens is challenging. For Ross River virus (RRV), knowledge of the transmission dynamics, in particular the role of non-human species, is important. In Australia, RRV accounts for the highest number of human mosquito-borne virus infections. The long held dogma that marsupials are better reservoirs than placental mammals, which are better reservoirs than birds, deserves critical review. We present a review of 50 years of evidence on non-human reservoirs of RRV, which includes experimental infection studies, virus isolation studies and serosurveys. We find that whilst marsupials are competent reservoirs of RRV, there is potential for placental mammals and birds to contribute to transmission dynamics. However, the role of these animals as reservoirs of RRV remains unclear due to fragmented evidence and sampling bias. Future investigations of RRV reservoirs should focus on quantifying complex transmission dynamics across environments.
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Affiliation(s)
- Eloise B Stephenson
- Environmental Futures Research Institute, Griffith University, Brisbane, Queensland, 4111, Australia.
| | - Alison J Peel
- Environmental Futures Research Institute, Griffith University, Brisbane, Queensland, 4111, Australia
| | - Simon A Reid
- The University of Queensland, School of Public Health, Herston, Brisbane, Queensland, 4006, Australia
| | - Cassie C Jansen
- Metro North Public Health Unit, Metro North Hospital and Health Service, Windsor, Brisbane, Queensland, 4030, Australia.,Communicable Diseases Branch, Department of Health, Queensland Government, Herston, Brisbane, Queensland, 4006, Australia
| | - Hamish McCallum
- Environmental Futures Research Institute, Griffith University, Brisbane, Queensland, 4111, Australia
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Faddy HM, Tran TV, Hoad VC, Seed CR, Viennet E, Chan HT, Harley R, Hewlett E, Hall RA, Bielefeldt-Ohmann H, Flower RLP, Prow NA. Ross River virus in Australian blood donors: possible implications for blood transfusion safety. Transfusion 2018; 58:485-492. [PMID: 29350414 DOI: 10.1111/trf.14472] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2017] [Revised: 10/05/2017] [Accepted: 10/13/2017] [Indexed: 11/29/2022]
Abstract
BACKGROUND Emerging transfusion-transmissible pathogens, including arboviruses such as West Nile, Zika, dengue, and Ross River viruses, are potential threats to transfusion safety. The most prevalent arbovirus in humans in Australia is Ross River virus (RRV); however, prevalence varies substantially around the country. Modeling estimated a yearly risk of 8 to 11 potentially RRV-viremic fresh blood components nationwide. This study aimed to measure the occurrence of RRV viremia among donors who donated at Australian collection centers located in areas with significant RRV transmission during one peak season. STUDY DESIGN AND METHODS Plasma samples were collected from donors (n = 7500) who donated at the selected collection centers during one peak season. Viral RNA was extracted from individual samples, and quantitative reverse transcription-polymerase chain reaction was performed. RESULTS Regions with the highest rates of RRV transmission were not areas where donor centers were located. We did not detect RRV RNA among 7500 donations collected at the selected centers, resulting in a zero risk estimate with a one-sided 95% confidence interval of 0 to 1 in 2019 donations. CONCLUSION Our results suggest that the yearly risk of collecting a RRV-infected blood donation in Australia is low and is at the lower range of previous risk modeling. The majority of Australian donor centers were not in areas known to be at the highest risk for RRV transmission, which was not taken into account in previous models based on notification data. Therefore, we believe that the risk of RRV transfusion transmission in Australia is acceptably low and appropriately managed through existing risk management, including donation restrictions and recall policies.
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Affiliation(s)
- Helen M Faddy
- Research and Development, Australian Red Cross Blood Service, Brisbane, Queensland, Australia.,School of Medicine, The University of Queensland, Brisbane, Queensland, Australia
| | - Thu V Tran
- Research and Development, Australian Red Cross Blood Service, Brisbane, Queensland, Australia
| | - Veronica C Hoad
- Clinical Services and Research, Australian Red Cross Blood Service, Brisbane, Queensland, Australia
| | - Clive R Seed
- Clinical Services and Research, Australian Red Cross Blood Service, Brisbane, Queensland, Australia
| | - Elvina Viennet
- Research and Development, Australian Red Cross Blood Service, Brisbane, Queensland, Australia
| | - Hiu-Tat Chan
- Clinical Services and Research, Australian Red Cross Blood Service, Brisbane, Queensland, Australia
| | - Robert Harley
- Clinical Services and Research, Australian Red Cross Blood Service, Brisbane, Queensland, Australia
| | - Elise Hewlett
- Research and Development, Australian Red Cross Blood Service, Brisbane, Queensland, Australia.,Australian Infectious Disease Research Centre, School of Chemistry and Molecular Biosciences, The University of Queensland, Brisbane, Queensland, Australia
| | - Roy A Hall
- Australian Infectious Disease Research Centre, School of Chemistry and Molecular Biosciences, The University of Queensland, Brisbane, Queensland, Australia
| | - Helle Bielefeldt-Ohmann
- Australian Infectious Disease Research Centre, School of Chemistry and Molecular Biosciences, The University of Queensland, Brisbane, Queensland, Australia
| | - Robert L P Flower
- Research and Development, Australian Red Cross Blood Service, Brisbane, Queensland, Australia
| | - Natalie A Prow
- QIMR Berghofer Medical Research Institute, Brisbane, Queensland, Australia
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12
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Improving public health intervention for mosquito-borne disease: the value of geovisualization using source of infection and LandScan data. Epidemiol Infect 2016; 144:3108-3119. [DOI: 10.1017/s0950268816001357] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
Abstract
SUMMARYEpidemiological studies use georeferenced health data to identify disease clusters but the accuracy of this georeferencing is obfuscated by incorrectly assigning the source of infection and by aggregating case data to larger geographical areas. Often, place of residence (residence) is used as a proxy for the source of infection (source) which may not be accurate. Using a 21-year dataset from South Australia of human infections with the mosquito-borne Ross River virus, we found that 37% of cases were believed to have been acquired away from home. We constructed two risk maps using age-standardized morbidity ratios (SMRs) calculated using residence and patient-reported source. Both maps confirm significant inter-suburb variation in SMRs. Areas frequently named as the source (but not residence) and the highest-risk suburbs both tend to be tourist locations with vector mosquito habitat, and camping or outdoor recreational opportunities. We suggest the highest-risk suburbs as places to focus on for disease control measures. We also use a novel application of ambient population data (LandScan) to improve the interpretation of these risk maps and propose how this approach can aid in implementing disease abatement measures on a smaller scale than for which disease data are available.
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13
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Abstract
Viral safety remains a major concern in transfusion of blood products. Over years, the control measures applied to blood products were made more and more sophisticated; however, the number of infectious agents, and notably of viruses, that can be transmitted by transfusion is increasing continuously. The aim of this review paper is to actualize that published in the same journal by the same authors in 2011 with more details on some of actual vs virtual viral threats that were identified recently in the field of blood transfusion. The main subjects that are covered successively concern the transmission via transfusion of hepatitis E virus, the frequency of transfusion transmitted arboviruses, transfusion at the time of the Ebola epidemics in West Africa, the debated role of Marseillevirus (giant viruses infecting amoebae and suspected to infect human blood latently), and, finally, the recent report of the identification in blood donors of a new member of the Flaviviridae family. The addition of these new viral risks to those already identified-partially controlled or not-pleads for the urgent need to move forward to considering inactivation of infectious agents in blood products.
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Affiliation(s)
- B Pozzetto
- EA3064, Groupe immunité des muqueuses et agents pathogènes (GIMAP), faculté de médecine de Saint-Étienne, université de Lyon, 42023 Saint-Étienne, France; Laboratoire des agents infectieux et d'hygiène, hôpital Nord, CHU de Saint-Étienne, 42055 Saint-Étienne, France.
| | - O Garraud
- EA3064, Groupe immunité des muqueuses et agents pathogènes (GIMAP), faculté de médecine de Saint-Étienne, université de Lyon, 42023 Saint-Étienne, France; Institut national de la transfusion sanguine (INTS), 75015 Paris, France
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14
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Seed CR, Hoad VC, Faddy HM, Kiely P, Keller AJ, Pink J. Re-evaluating the residual risk of transfusion-transmitted Ross River virus infection. Vox Sang 2016; 110:317-23. [PMID: 26748600 DOI: 10.1111/vox.12372] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2015] [Revised: 11/16/2015] [Accepted: 11/28/2015] [Indexed: 12/15/2022]
Abstract
BACKGROUND AND OBJECTIVES Ross River virus (RRV) is an enveloped, RNA alphavirus in the same antigenic group as chikungunya virus. Australia records an annual average of 5000 laboratory-confirmed RRV infections. While RRV is currently geographically restricted to the Western Pacific, the capacity of arboviruses for rapid expansion is well established. The first case of RRV transfusion-transmission was recently described prompting a comprehensive risk assessment. MATERIALS AND METHODS To estimate the RRV residual risk, we applied laboratory-confirmed RRV notifications to two published models. This modelling generated point estimates for the risk of viraemia in the donor population, the risk of collecting a viraemic donation and the predicted number of infected components. RESULTS The EUFRAT model estimated the risk of infection in donors as one in 95 039 (one in 311 328 to one in 32 399) to one in 14 943 (one in 48 593 to one in 5094). The point estimate for collecting a RRV viraemic donation varied from one in 166 486 (one in 659 078 to one in 49 158) (annualized national risk) to one in 26 117 (one in 103 628 to one in 7729) (area of high transmission). The modelling predicted 8-11 RRV-infected labile blood components issued in Australia during a 1-year period. CONCLUSION Considering the uncertainty in the modelled estimates, the unknown rate of RRV donor viraemia and the low severity of any recipient RRV infection, additional risk management for RRV in Australia will initially be restricted to strengthening the messaging to donors regarding prompt reporting of any postdonation illnesses.
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Affiliation(s)
- C R Seed
- Australian Red Cross Blood Service, Perth, WA, Australia
| | - V C Hoad
- Australian Red Cross Blood Service, Perth, WA, Australia
| | - H M Faddy
- Australian Red Cross Blood Service, Brisbane, QLD, Australia
| | - P Kiely
- Australian Red Cross Blood Service, Melbourne, Vic., Australia
| | - A J Keller
- Australian Red Cross Blood Service, Perth, WA, Australia
| | - J Pink
- Australian Red Cross Blood Service, Brisbane, QLD, Australia
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15
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Claflin SB, Webb CE. Ross River Virus: Many Vectors and Unusual Hosts Make for an Unpredictable Pathogen. PLoS Pathog 2015; 11:e1005070. [PMID: 26335937 PMCID: PMC4559463 DOI: 10.1371/journal.ppat.1005070] [Citation(s) in RCA: 67] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
Affiliation(s)
- Suzi B. Claflin
- Department of Entomology, Cornell University, Ithaca, New York, United States of America
| | - Cameron E. Webb
- Department of Medical Entomology, University of Sydney and Pathology West—ICPMR Westmead, Westmead Hospital, Westmead, New South Wales, Australia
- * E-mail:
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Young MK, Faddy HM, Fryk J, Nimmo GR, Cripps AW. Hepatitis A virus antibodies in Australian blood donors: Implications for immunoglobulin sufficiency. Vaccine 2015; 33:5135-9. [DOI: 10.1016/j.vaccine.2015.08.003] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2015] [Revised: 06/28/2015] [Accepted: 08/02/2015] [Indexed: 11/24/2022]
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