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Rodríguez O, de la Fuente G, Fernández de Mera IG, Vaz-Rodrigues R, Gortázar C, de la Fuente J. The Saharan antelope addax (Addax nasomaculatus) as a host for Hyalomma marginatum, tick vector of Crimean-Congo hemorrhagic fever virus. Ticks Tick Borne Dis 2022; 13:102034. [PMID: 36041296 DOI: 10.1016/j.ttbdis.2022.102034] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2022] [Revised: 08/09/2022] [Accepted: 08/23/2022] [Indexed: 11/26/2022]
Abstract
Tick infestation and pathogen prevalence in ticks infesting the Saharan antelope addax (Addax nasomaculatus) are factors that may constitute a risk for both human and animal health. In this study we describe season distribution of adult Hyalomma marginatum and analyzed the tick-borne pathogens and their seroprevalence in natural-living addax in Morocco. The results showed that addax is an important host species for H. marginatum adults. The seroprevalence of Bluetongue virus (BTV; 61.5-92.3%, n = 8/13-84/91), Coxiella burnetii (36.3-69.2%, n = 33/91-9/13) and Brucella spp. (0.0-4.8%, n = 0/50-2/42) was characterized in addax during various years (sampled animals per year, n = 13-91). Presence of Aigai virus (AIGV), a recent taxonomic differentiation of Crimean-Congo hemorrhagic fever virus (CCHFV) of 100% (4/4, years 2016 and 2017) together with Babesia ovis (75%, 3/4, year 2014), Anaplasma spp. (75%, 3/4, year 2014), Rickettsia spp. (50%, 2/4, year 2014) and Theileria spp. (25%, 1/4, year 2014) was observed in H. marginatum collected from the addax (4 pools of 10 adult ticks each). The results support the role of addax host in H. marginatum life cycle and exposure to AIGV and other tick-borne pathogens. The development of control interventions including anti-tick vaccines for wildlife species will contribute to the implementation of effective measures for the prevention and control of tick-borne diseases and might be relevant for the preservation of this threatened species and others such as Arabian oryx (Oryx leucoryx) and African elk (Taurotragus oryx) that share habitat.
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Affiliation(s)
| | - Gabriela de la Fuente
- Sabiotec, Edificio incubadora de empresas UCLM, Camino de Moledores s/n, Ciudad Real 13071, Spain
| | - Isabel G Fernández de Mera
- SaBio. Instituto de Investigación en Recursos Cinegéticos IREC (CSIC-UCLM-JCCM), Ronda de Toledo 12, Ciudad Real 13005, Spain
| | - Rita Vaz-Rodrigues
- SaBio. Instituto de Investigación en Recursos Cinegéticos IREC (CSIC-UCLM-JCCM), Ronda de Toledo 12, Ciudad Real 13005, Spain
| | - Christian Gortázar
- SaBio. Instituto de Investigación en Recursos Cinegéticos IREC (CSIC-UCLM-JCCM), Ronda de Toledo 12, Ciudad Real 13005, Spain
| | - José de la Fuente
- SaBio. Instituto de Investigación en Recursos Cinegéticos IREC (CSIC-UCLM-JCCM), Ronda de Toledo 12, Ciudad Real 13005, Spain; Department of Veterinary Pathobiology, College of Veterinary Medicine, Oklahoma State University, Stillwater, OK 74078, United States.
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Pickin MJ, Devignot S, Weber F, Groschup MH. Comparison of Crimean-Congo Hemorrhagic Fever Virus and Aigai Virus in Life Cycle Modeling Systems Reveals a Difference in L Protein Activity. J Virol 2022; 96:e0059922. [PMID: 35695578 DOI: 10.1128/jvi.00599-22] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
Crimean-Congo hemorrhagic fever virus (CCHFV) is a tick-borne orthonairovirus that causes a severe, often fatal, hemorrhagic disease throughout Africa, Asia, and Southeast Europe. A wide variety of strains are circulating in the field which broadly correlate to their geographic distribution. The viral determinants of pathogenicity remain unclear, as does the contribution of strain-specific differences to pathology. Aigai virus (AIGV) is a closely related virus (formally designated CCHFV genotype VI, Europe II, or AP92-like virus), which has been proposed to be less virulent than CCHFV. However, the molecular details leading to potential differences in virulence are unknown. To explore if differences exist, life cycle modeling systems, including both a minigenome and a transcriptionally competent virus-like particle assay, were developed for AIGV to allow the comparison with the CCHFV reference IbAr10200 strain. Using this approach, we could demonstrate that AIGV exhibits lower viral gene expression than the reference strain of CCHFV. Subsequent systematic exchange of viral components revealed that the L protein is responsible for the observed differences in gene expression and that the interferon (IFN) antagonistic activity of the ovarian tumor-type protease domain is not responsible for this effect. IMPORTANCE Crimean-Congo hemorrhagic fever virus (CCHFV) is the cause of severe hemorrhagic disease, which is often fatal. Present throughout Africa, Asia, and Southeast Europe, a diverse number of viral genotypes exist. However, the viral determinants of pathogenicity remain unclear. It has been proposed that the closely related Aigai virus (AIGV) may be a less virulent virus. Here, using newly developed and improved life cycle modeling systems we have examined potential differences between the CCHFV reference strain, IbAr10200, and AIGV. Using this approach, we identified lower viral gene expression driven by the AIGV viral polymerase as a major difference which may be indicative of lower virulence.
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Papa A, Marklewitz M, Paraskevopoulou S, Garrison AR, Alkhovsky SV, Avšič-Županc T, Bente DA, Bergeron É, Burt F, Di Paola N, Ergünay K, Hewson R, Mirazimi A, Sall AA, Spengler JR, Postler TS, Palacios G, Kuhn JH. History and classification of Aigai virus (formerly Crimean-Congo haemorrhagic fever virus genotype VI). J Gen Virol 2022; 103. [PMID: 35412967 PMCID: PMC10026732 DOI: 10.1099/jgv.0.001734] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
Crimean-Congo haemorrhagic fever virus (CCHFV) is the medically most important member of the rapidly expanding bunyaviral family Nairoviridae. Traditionally, CCHFV isolates have been assigned to six distinct genotypes. Here, the International Committee on Taxonomy of Viruses (ICTV) Nairoviridae Study Group outlines the reasons for the recent decision to re-classify genogroup VI (aka Europe-2 or AP-92-like) as a distinct virus, Aigai virus (AIGV).
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Affiliation(s)
- Anna Papa
- National Reference Centre for Arboviruses and Haemorrhagic Fever Viruses (Εθνικό Κέντρο Αναφοράς Αρμποϊών και Αιμορραγικών πυρετών, 1st Laboratory of Microbiology (Α' Εργαστήριο Μικροβιολογίας), School of Medicine (Τμήμα Ιατρικής), Aristotle University of Thessaloniki (Αριστοτέλειο Πανεπιστήμιο Θεσσαλονίκης), Thessaloniki, Greece
- The members of the 2017-2020 International Committee on Taxonomy of Viruses (ICTV) Nairoviridae Study Group
| | - Marco Marklewitz
- Institute of Virology, Charité-Universitätsmedizin Berlin, corporate member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Berlin, Germany
| | - Sofia Paraskevopoulou
- Institute of Virology, Charité-Universitätsmedizin Berlin, corporate member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Berlin, Germany
| | - Aura R Garrison
- The members of the 2017-2020 International Committee on Taxonomy of Viruses (ICTV) Nairoviridae Study Group
- United States Army Medical Research Institute of Infectious Diseases, Fort Detrick, Frederick, Maryland, USA
- The members of the 2020-2023 International Committee on Taxonomy of Viruses (ICTV) Nairoviridae Study Groups
| | - Sergey V Alkhovsky
- The members of the 2017-2020 International Committee on Taxonomy of Viruses (ICTV) Nairoviridae Study Group
- D. I. Ivanovsky Institute of Virology of the N. F. Gamaleya National Center on Epidemiology and Microbiology of Ministry of Health of Russian Federation (Институт вирусологии им. Д. И. Ивановского, входящий в состав ФГБУ «НИЦЭМ им. Н. Ф. Гамалеи» Минздрава России), Moscow, Russia
| | - Tatjana Avšič-Županc
- The members of the 2017-2020 International Committee on Taxonomy of Viruses (ICTV) Nairoviridae Study Group
- The members of the 2020-2023 International Committee on Taxonomy of Viruses (ICTV) Nairoviridae Study Groups
- University of Ljubljana (Univerza v Ljubljani), Faculty of Medicine (Medicinska fakulteta), Slovenia
| | - Dennis A Bente
- The members of the 2017-2020 International Committee on Taxonomy of Viruses (ICTV) Nairoviridae Study Group
- University of Texas Medical Branch, Galveston, Texas, USA
| | - Éric Bergeron
- The members of the 2017-2020 International Committee on Taxonomy of Viruses (ICTV) Nairoviridae Study Group
- The members of the 2020-2023 International Committee on Taxonomy of Viruses (ICTV) Nairoviridae Study Groups
- Viral Special Pathogens Branch, Division of High-Consequence Pathogens and Pathology, Centers for Disease Control and Prevention, Atlanta, Georgia, USA
| | - Felicity Burt
- Division of Virology, National Health Laboratory Service and Division of Virology, University of the Free State, Bloemfontein, South Africa
- The members of the 2017-2020 International Committee on Taxonomy of Viruses (ICTV) Nairoviridae Study Group
- The members of the 2020-2023 International Committee on Taxonomy of Viruses (ICTV) Nairoviridae Study Groups
| | - Nicholas Di Paola
- The members of the 2017-2020 International Committee on Taxonomy of Viruses (ICTV) Nairoviridae Study Group
- United States Army Medical Research Institute of Infectious Diseases, Fort Detrick, Frederick, Maryland, USA
- The members of the 2020-2023 International Committee on Taxonomy of Viruses (ICTV) Nairoviridae Study Groups
| | - Koray Ergünay
- Virology Unit (Viroloji Birimi), Department of Medical Microbiology (Tıbbi Mikrobiyoloji Anabilim Dalı), Faulty of Medicine (Tıp Fakültesi), Hacettepe University (Hacettepe Üniversitesi), Ankara, Turkey
- The members of the 2017-2020 International Committee on Taxonomy of Viruses (ICTV) Nairoviridae Study Group
- The members of the 2020-2023 International Committee on Taxonomy of Viruses (ICTV) Nairoviridae Study Groups
| | - Roger Hewson
- Public Health England, Porton Down, Wiltshire, Salisbury, UK
- The members of the 2017-2020 International Committee on Taxonomy of Viruses (ICTV) Nairoviridae Study Group
- The members of the 2020-2023 International Committee on Taxonomy of Viruses (ICTV) Nairoviridae Study Groups
| | - Ali Mirazimi
- Folkhalsomyndigheten, Stockholm, Sweden
- The members of the 2017-2020 International Committee on Taxonomy of Viruses (ICTV) Nairoviridae Study Group
- The members of the 2020-2023 International Committee on Taxonomy of Viruses (ICTV) Nairoviridae Study Groups
| | - Amadou Alpha Sall
- Institut Pasteur de Dakar, Dakar, Senegal
- The members of the 2017-2020 International Committee on Taxonomy of Viruses (ICTV) Nairoviridae Study Group
| | - Jessica R Spengler
- The members of the 2017-2020 International Committee on Taxonomy of Viruses (ICTV) Nairoviridae Study Group
- Viral Special Pathogens Branch, Division of High-Consequence Pathogens and Pathology, Centers for Disease Control and Prevention, Atlanta, Georgia, USA
| | - Thomas S Postler
- Department of Microbiology & Immunology, Vagelos College of Physicians & Surgeons, Columbia University Irving Medical Center, New York, NY, USA
| | - Gustavo Palacios
- The members of the 2017-2020 International Committee on Taxonomy of Viruses (ICTV) Nairoviridae Study Group
- United States Army Medical Research Institute of Infectious Diseases, Fort Detrick, Frederick, Maryland, USA
- The members of the 2020-2023 International Committee on Taxonomy of Viruses (ICTV) Nairoviridae Study Groups
| | - Jens H Kuhn
- Integrated Research Facility at Fort Detrick. National Institute of Allergy and Infectious Diseases, National Institutes of Health, Fort Detrick, Frederick, Maryland, USA
- The members of the 2017-2020 International Committee on Taxonomy of Viruses (ICTV) Nairoviridae Study Group
- The members of the 2020-2023 International Committee on Taxonomy of Viruses (ICTV) Nairoviridae Study Groups
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