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Djiman TA, Biguezoton AS, Saegerman C. Tick-Borne Diseases in Sub-Saharan Africa: A Systematic Review of Pathogens, Research Focus, and Implications for Public Health. Pathogens 2024; 13:697. [PMID: 39204297 PMCID: PMC11356977 DOI: 10.3390/pathogens13080697] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2024] [Revised: 08/11/2024] [Accepted: 08/12/2024] [Indexed: 09/03/2024] Open
Abstract
Sub-Saharan Africa, with its hot and humid climate, is a conducive zone for tick proliferation. These vectors pose a major challenge to both animal and human health in the region. However, despite the relevance of emerging diseases and evidence of tick-borne disease emergence, very few studies have been dedicated to investigating zoonotic pathogens transmitted by ticks in this area. To raise awareness of the risks of tick-borne zoonotic diseases in sub-Saharan Africa, and to define a direction for future research, this systematic review considers the trends of research on tick-borne bacteria, parasites, and viruses from 2012 to 2023, aiming to highlight the circulation of these pathogens in ticks, cattle, sheep, goats, and humans. For this purpose, three international databases were screened to select 159 papers fitting designed inclusion criteria and used for qualitative analyses. Analysis of these studies revealed a high diversity of tick-borne pathogens in sub-Saharan Africa, with a total of 37 bacterial species, 27 parasite species, and 14 viruses identified. Among these, 27% were zoonotic pathogens, yet only 11 studies investigated their presence in humans. Furthermore, there is growing interest in the investigation of bacteria and parasites in both ticks and ruminants. However, research into viruses is limited and has only received notable interest from 2021 onwards. While studies on the detection of bacteria, including those of medical interest, have focused on ticks, little consideration has been given to these vectors in studies of parasites circulation. Regarding the limited focus on zoonotic pathogens transmitted by ticks, particularly in humans, despite documented cases of emerging zoonoses and the notable 27% proportion reported, further efforts should be made to fill these gaps. Future studies should prioritize the investigation of zoonotic pathogens, especially viruses, which represent the primary emerging threats, by adopting a One Health approach. This will enhance the understanding of their circulation and impact on both human and animal health. In addition, more attention should be given to the risk factors/drivers associated to their emergence as well as the perception of the population at risk of infection from these zoonotic pathogens.
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Affiliation(s)
- Tidjani A. Djiman
- Research Unit of Epidemiology and Risk Analysis Applied to Veterinary Sciences (UREAR-ULiège), Fundamental and Applied Research for Animals and Health (FARAH) Center, Faculty of Veterinary Medicine, University of Liege, 4000 Liège, Belgium;
- Vector-Borne Diseases and Biodiversity Unit (UMaVeB), International Research and Development Centre on Livestock in Sub-humid Areas (CIRDES), Bobo-Dioulasso 454, Burkina Faso;
| | - Abel S. Biguezoton
- Vector-Borne Diseases and Biodiversity Unit (UMaVeB), International Research and Development Centre on Livestock in Sub-humid Areas (CIRDES), Bobo-Dioulasso 454, Burkina Faso;
| | - Claude Saegerman
- Research Unit of Epidemiology and Risk Analysis Applied to Veterinary Sciences (UREAR-ULiège), Fundamental and Applied Research for Animals and Health (FARAH) Center, Faculty of Veterinary Medicine, University of Liege, 4000 Liège, Belgium;
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2
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Kobayashi D, Inoue Y, Suzuki R, Matsuda M, Shimoda H, Faizah AN, Kaku Y, Ishijima K, Kuroda Y, Tatemoto K, Virhuez-Mendoza M, Harada M, Nishino A, Inumaru M, Yonemitsu K, Kuwata R, Takano A, Watanabe M, Higa Y, Sawabe K, Maeda K, Isawa H. Identification and epidemiological study of an uncultured flavivirus from ticks using viral metagenomics and pseudoinfectious viral particles. Proc Natl Acad Sci U S A 2024; 121:e2319400121. [PMID: 38687787 PMCID: PMC11087778 DOI: 10.1073/pnas.2319400121] [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: 11/06/2023] [Accepted: 03/20/2024] [Indexed: 05/02/2024] Open
Abstract
During their blood-feeding process, ticks are known to transmit various viruses to vertebrates, including humans. Recent viral metagenomic analyses using next-generation sequencing (NGS) have revealed that blood-feeding arthropods like ticks harbor a large diversity of viruses. However, many of these viruses have not been isolated or cultured, and their basic characteristics remain unknown. This study aimed to present the identification of a difficult-to-culture virus in ticks using NGS and to understand its epidemic dynamics using molecular biology techniques. During routine tick-borne virus surveillance in Japan, an unknown flaviviral sequence was detected via virome analysis of host-questing ticks. Similar viral sequences have been detected in the sera of sika deer and wild boars in Japan, and this virus was tentatively named the Saruyama virus (SAYAV). Because SAYAV did not propagate in any cultured cells tested, single-round infectious virus particles (SRIP) were generated based on its structural protein gene sequence utilizing a yellow fever virus-based replicon system to understand its nationwide endemic status. Seroepidemiological studies using SRIP as antigens have demonstrated the presence of neutralizing antibodies against SAYAV in sika deer and wild boar captured at several locations in Japan, suggesting that SAYAV is endemic throughout Japan. Phylogenetic analyses have revealed that SAYAV forms a sister clade with the Orthoflavivirus genus, which includes important mosquito- and tick-borne pathogenic viruses. This shows that SAYAV evolved into a lineage independent of the known orthoflaviviruses. This study demonstrates a unique approach for understanding the epidemiology of uncultured viruses by combining viral metagenomics and pseudoinfectious viral particles.
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Affiliation(s)
- Daisuke Kobayashi
- Department of Medical Entomology, National Institute of Infectious Diseases, Shinjuku-ku, Tokyo162-8640, Japan
- Management Department of Biosafety, Laboratory Animal, and Pathogen Bank, National Institute of Infectious Diseases, Shinjuku-ku, Tokyo162-8640, Japan
| | - Yusuke Inoue
- Department of Veterinary Science, National Institute of Infectious Diseases, Shinjuku-ku, Tokyo162-8640, Japan
- Joint Graduate School of Veterinary Medicine, Yamaguchi University, Yamaguchi City, Yamaguchi753-8515, Japan
| | - Ryosuke Suzuki
- Department of Virology II, National Institute of Infectious Diseases, Musashimurayama City, Tokyo208-0011, Japan
| | - Mami Matsuda
- Department of Virology II, National Institute of Infectious Diseases, Musashimurayama City, Tokyo208-0011, Japan
| | - Hiroshi Shimoda
- Joint Graduate School of Veterinary Medicine, Yamaguchi University, Yamaguchi City, Yamaguchi753-8515, Japan
| | - Astri Nur Faizah
- Department of Medical Entomology, National Institute of Infectious Diseases, Shinjuku-ku, Tokyo162-8640, Japan
| | - Yoshihiro Kaku
- Department of Veterinary Science, National Institute of Infectious Diseases, Shinjuku-ku, Tokyo162-8640, Japan
| | - Keita Ishijima
- Department of Veterinary Science, National Institute of Infectious Diseases, Shinjuku-ku, Tokyo162-8640, Japan
| | - Yudai Kuroda
- Department of Veterinary Science, National Institute of Infectious Diseases, Shinjuku-ku, Tokyo162-8640, Japan
- Joint Graduate School of Veterinary Medicine, Yamaguchi University, Yamaguchi City, Yamaguchi753-8515, Japan
| | - Kango Tatemoto
- Department of Veterinary Science, National Institute of Infectious Diseases, Shinjuku-ku, Tokyo162-8640, Japan
- Joint Graduate School of Veterinary Medicine, Yamaguchi University, Yamaguchi City, Yamaguchi753-8515, Japan
| | - Milagros Virhuez-Mendoza
- Department of Veterinary Science, National Institute of Infectious Diseases, Shinjuku-ku, Tokyo162-8640, Japan
- Joint Graduate School of Veterinary Medicine, Yamaguchi University, Yamaguchi City, Yamaguchi753-8515, Japan
| | - Michiko Harada
- Department of Veterinary Science, National Institute of Infectious Diseases, Shinjuku-ku, Tokyo162-8640, Japan
- Joint Graduate School of Veterinary Medicine, Yamaguchi University, Yamaguchi City, Yamaguchi753-8515, Japan
| | - Ayano Nishino
- Department of Veterinary Science, National Institute of Infectious Diseases, Shinjuku-ku, Tokyo162-8640, Japan
- Joint Graduate School of Veterinary Medicine, Yamaguchi University, Yamaguchi City, Yamaguchi753-8515, Japan
| | - Mizue Inumaru
- Department of Medical Entomology, National Institute of Infectious Diseases, Shinjuku-ku, Tokyo162-8640, Japan
| | - Kenzo Yonemitsu
- Management Department of Biosafety, Laboratory Animal, and Pathogen Bank, National Institute of Infectious Diseases, Shinjuku-ku, Tokyo162-8640, Japan
- Joint Graduate School of Veterinary Medicine, Yamaguchi University, Yamaguchi City, Yamaguchi753-8515, Japan
| | - Ryusei Kuwata
- Joint Graduate School of Veterinary Medicine, Yamaguchi University, Yamaguchi City, Yamaguchi753-8515, Japan
- Faculty of Veterinary Medicine, Okayama University of Science, Imabari City, Ehime794-8555, Japan
| | - Ai Takano
- Joint Graduate School of Veterinary Medicine, Yamaguchi University, Yamaguchi City, Yamaguchi753-8515, Japan
| | - Mamoru Watanabe
- Department of Medical Entomology, National Institute of Infectious Diseases, Shinjuku-ku, Tokyo162-8640, Japan
| | - Yukiko Higa
- Department of Medical Entomology, National Institute of Infectious Diseases, Shinjuku-ku, Tokyo162-8640, Japan
| | - Kyoko Sawabe
- Department of Medical Entomology, National Institute of Infectious Diseases, Shinjuku-ku, Tokyo162-8640, Japan
- Management Department of Biosafety, Laboratory Animal, and Pathogen Bank, National Institute of Infectious Diseases, Shinjuku-ku, Tokyo162-8640, Japan
| | - Ken Maeda
- Department of Veterinary Science, National Institute of Infectious Diseases, Shinjuku-ku, Tokyo162-8640, Japan
- Joint Graduate School of Veterinary Medicine, Yamaguchi University, Yamaguchi City, Yamaguchi753-8515, Japan
| | - Haruhiko Isawa
- Department of Medical Entomology, National Institute of Infectious Diseases, Shinjuku-ku, Tokyo162-8640, Japan
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Addo SO, Bentil RE, Mosore MT, Behene E, Adinkrah J, Tagoe J, Yeboah C, Baako BOA, Atibila D, Kwarteng SA, Poku-Asante K, Owusu-Darbo E, Asoala V, Mingle DL, Nyarko EO, Fox AT, Letizia AG, William JD, Nimo-Paintsil S, Harwood JF, Dadzie SK. Risk factors affecting the feeding site predilection of ticks on cattle in Ghana. EXPERIMENTAL & APPLIED ACAROLOGY 2024; 92:835-850. [PMID: 38578579 PMCID: PMC11065925 DOI: 10.1007/s10493-024-00906-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/13/2023] [Accepted: 03/03/2024] [Indexed: 04/06/2024]
Abstract
Ticks are important disease vectors affecting animal health and causing substantial economic loss, especially in the tropics and subtropics. To examine the tick burden of cattle and associated risk factors for tick infestation, ticks were collected from 388 cattle within five regions in Ghana. Most of the cattle were males (50.3%) and generally older than 3 years (65%). Of the animals sampled, 2187 ticks were collected with a mean tick burden of 5.6 ticks per cattle, and the average tick burden on the udder/scrotum being significantly higher than in the anal region (Generalized Linear Mix Model [GLMM], p = 0.01197). The tick species identified were predominantly Amblyomma variegatum (42.6%) and Hyalomma rufipes (26.2%). High proportions of cattle examined were found to have A. variegatum infesting the udder/scrotum. Furthermore, H. rufipes infested mostly the anal region compared to other examined body parts (OR 14.8, 95% CI 8.6-25.4, p < 0.001). Using the GLMM, tick abundance was found to be significantly higher in cattle older than 3 years. The tick burden in the udder/scrotum was higher than that from the chest and leg/thigh of the cattle (GLMM, p < 0.05). The tick burden at the anal region was also significantly higher than the leg/thigh and chest. This study indicates that the preferred attachment sites of ticks on cattle are species-dependent and effective treatment with acaricides should take into consideration the udder/scrotum and anal regions as well as prioritizing older cattle.
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Affiliation(s)
- Seth Offei Addo
- Parasitology Department, Noguchi Memorial Institute for Medical Research, University of Ghana, Legon, Accra, Ghana.
- U.S. Naval Medical Research Unit EURAFCENT, Accra, Ghana.
| | - Ronald Essah Bentil
- Parasitology Department, Noguchi Memorial Institute for Medical Research, University of Ghana, Legon, Accra, Ghana
- U.S. Naval Medical Research Unit EURAFCENT, Accra, Ghana
| | - Mba-Tihssommah Mosore
- Parasitology Department, Noguchi Memorial Institute for Medical Research, University of Ghana, Legon, Accra, Ghana
- U.S. Naval Medical Research Unit EURAFCENT, Accra, Ghana
| | - Eric Behene
- Parasitology Department, Noguchi Memorial Institute for Medical Research, University of Ghana, Legon, Accra, Ghana
- U.S. Naval Medical Research Unit EURAFCENT, Accra, Ghana
| | - Julian Adinkrah
- Parasitology Department, Noguchi Memorial Institute for Medical Research, University of Ghana, Legon, Accra, Ghana
- U.S. Naval Medical Research Unit EURAFCENT, Accra, Ghana
| | - Janice Tagoe
- Parasitology Department, Noguchi Memorial Institute for Medical Research, University of Ghana, Legon, Accra, Ghana
- U.S. Naval Medical Research Unit EURAFCENT, Accra, Ghana
| | - Clara Yeboah
- Parasitology Department, Noguchi Memorial Institute for Medical Research, University of Ghana, Legon, Accra, Ghana
- U.S. Naval Medical Research Unit EURAFCENT, Accra, Ghana
| | | | - Dorcas Atibila
- Entomology Unit, Department of Clinical Laboratory, Kintampo Health Research Centre, Kintampo, Ghana
| | - Sandra Abankwa Kwarteng
- Department of Theoretical and Applied Biology, Kwame Nkrumah University of Science and Technology, Kumasi, Ghana
| | - Kwaku Poku-Asante
- Entomology Unit, Department of Clinical Laboratory, Kintampo Health Research Centre, Kintampo, Ghana
| | - Ellis Owusu-Darbo
- School of Public Health, Kwame Nkrumah University of Science and Technology, Kumasi, Ghana
| | - Victor Asoala
- Navrongo Health Research Centre, Navrongo, Upper East Region, Ghana
| | - Daniel Lartei Mingle
- Public Health Division, 37 Military Hospital, Ghana Armed Forces Medical Service, Accra, Ghana
| | - Edward Owusu Nyarko
- Public Health Division, 37 Military Hospital, Ghana Armed Forces Medical Service, Accra, Ghana
| | - Anne T Fox
- U.S. Naval Medical Research Unit EURAFCENT, Accra, Ghana
| | - Andrew G Letizia
- Infectious Diseases Directorate, Naval Medical Research Center, Silver Spring, MD, USA
| | | | | | | | - Samuel Kweku Dadzie
- Parasitology Department, Noguchi Memorial Institute for Medical Research, University of Ghana, Legon, Accra, Ghana.
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Offei Addo S, Essah Bentil R, Olivia Ama Baako B, Ansah-Owusu J, Nii Laryea Tawiah-Mensah C, Behene E, Asoala V, Dunford JC, Asiedu Larbi J, Kweku Baidoo P, David Wilson M, Diclaro JW, Dadzie SK. Spatial and Seasonal Patterns of Tick Infestations in Kassena-Nankana Livestock. Vet Med Int 2024; 2024:8889907. [PMID: 38234318 PMCID: PMC10791324 DOI: 10.1155/2024/8889907] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2023] [Revised: 09/07/2023] [Accepted: 12/09/2023] [Indexed: 01/19/2024] Open
Abstract
The ability of ticks to adapt to different ecological zones, coupled with the spread of infectious pathogens negatively affects livestock production and thus, there is a need for better control strategies. However, control measures within a geographical region can only be effective if there is available information on tick population dynamics and ecology. This study focused on ticks infesting livestock in the Kassena-Nankana Districts of the Upper East Region of Ghana. The ticks were morphologically identified, variables such as season, animal host, and predilection sites were recorded, and the data were analyzed using STATA version 13. Out of 448 livestock examined, tick infestation in cattle was (78.60%), followed by sheep (25%) and goats (5.88%). A total of 1,550 ticks including nymphs (303) and adults (1,247) were collected. Adult ticks were found to be significantly associated with season (p < 0.001), with a high burden in the wet season. The nymph burden and body parts of livestock hosts were significantly associated with more nymphs collected from male animals than females (p < 0.001). Three genera of ticks, Amblyomma (62.97%), Hyalomma (18.71%), and Rhipicephalus (18.32%) were morphologically identified with the most predominant tick species recorded as Amblyomma variegatum (62.97%). Matured A. variegatum was sampled primarily in the wet season with their predilection site as the udder/scrotum (p < 0.001). However, adult Hyalomma truncatum was observed to have a significant association with the anal region (p < 0.001). Findings from this study are essential for formulating tick control measures to prevent the spread of infectious pathogens.
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Affiliation(s)
- Seth Offei Addo
- Parasitology Department, Noguchi Memorial Institute for Medical Research, University of Ghana, Legon, Accra, Ghana
- Department of Theoretical and Applied Biology, Kwame Nkrumah University of Science and Technology, Kumasi, Ghana
| | - Ronald Essah Bentil
- Parasitology Department, Noguchi Memorial Institute for Medical Research, University of Ghana, Legon, Accra, Ghana
| | | | - Jane Ansah-Owusu
- Parasitology Department, Noguchi Memorial Institute for Medical Research, University of Ghana, Legon, Accra, Ghana
| | | | - Eric Behene
- Parasitology Department, Noguchi Memorial Institute for Medical Research, University of Ghana, Legon, Accra, Ghana
| | - Victor Asoala
- Navrongo Health Research Centre, Navrongo, Upper East Region, Ghana
| | - James C. Dunford
- Navy Entomology Center of Excellence, Jacksonville, Florida, USA
- Uniformed Services University of Health Sciences, Bethesda, Maryland, USA
| | - John Asiedu Larbi
- Department of Theoretical and Applied Biology, Kwame Nkrumah University of Science and Technology, Kumasi, Ghana
| | - Philip Kweku Baidoo
- Department of Theoretical and Applied Biology, Kwame Nkrumah University of Science and Technology, Kumasi, Ghana
| | - Michael David Wilson
- Parasitology Department, Noguchi Memorial Institute for Medical Research, University of Ghana, Legon, Accra, Ghana
| | - Joseph W. Diclaro
- Navy Entomology Center of Excellence, Centers for Disease Control and Prevention Detachment, Atlanta, Georgia, USA
| | - Samuel K. Dadzie
- Parasitology Department, Noguchi Memorial Institute for Medical Research, University of Ghana, Legon, Accra, Ghana
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Wang A, Tang Y, Pang Z, Gong Y, Wu J, Qi J, Niu G. Molecular evidence for potential transovarial transmission of Dabieshan tick virus in Haemaphysalis longicornis from Shandong Province, China. PLoS One 2023; 18:e0296213. [PMID: 38134039 PMCID: PMC10745148 DOI: 10.1371/journal.pone.0296213] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2023] [Accepted: 12/04/2023] [Indexed: 12/24/2023] Open
Abstract
Dabieshan tick virus (DBTV) is a newly identified arbovirus, first detected in Haemaphysalis longicornis collected from Hubei Province in 2015. It has been confirmed that DBTV is widely distributed in Shandong Province, China. However, its entomological and epidemiological features remain to be further explored, particularly the feasibility of transovarial transmission. Our research tries to explain the possibility of transovarial transmission of DBTV from engorged female ticks to their offspring. All engorged female adult ticks were sampled from domestic sheep and allowed to lay eggs and hatch in appropriate laboratory conditions. All engorged ticks, larvae and unhatched eggs were classified into pools for nucleic acid extraction and DBTV RNA detection. According to the results of qRT-PCR, the positive rate of DBTV was 6.25% (8/128) in engorged female ticks, 3.57% (1/28) in eggs and 5% (3/60) in larvae pools, respectively. Phylogenetic analysis indicated that DBTV isolates from larvae were similar to those from maternal ticks with more than 99.5% homology, and DBTV was relatively conservative in evolution. Our findings are the first to provide molecular evidence of potential transovarial transmission of DBTV among H. longicornis. Nonetheless, the transovarial transmission of DBTV in frequency and proportion occurring in nature deserves further investigation.
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Affiliation(s)
- Anan Wang
- School of Public Health, WeiFang Medical University, Weifang, China
| | - Yunfeng Tang
- School of Public Health, WeiFang Medical University, Weifang, China
| | - Zheng Pang
- Tianjin Customs Port Out-Patient Department, Tianjin International Travel Healthcare Center, Tianjin, China
| | - Yaxuan Gong
- Yantai Zhifu District Center for Disease Control and Prevention, Yantai, China
| | - Jintao Wu
- Yantai Zhifu District Center for Disease Control and Prevention, Yantai, China
| | - Jun Qi
- Tianjin Customs Port Out-Patient Department, Tianjin International Travel Healthcare Center, Tianjin, China
| | - Guoyu Niu
- School of Public Health, WeiFang Medical University, Weifang, China
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Chakraborty S, Gao S, Allan BF, Smith RL. Effects of cattle on vector-borne disease risk to humans: A systematic review. PLoS Negl Trop Dis 2023; 17:e0011152. [PMID: 38113279 PMCID: PMC10763968 DOI: 10.1371/journal.pntd.0011152] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2023] [Revised: 01/03/2024] [Accepted: 12/04/2023] [Indexed: 12/21/2023] Open
Abstract
Vector-borne pathogens (VBPs) causing vector-borne diseases (VBDs) can circulate among humans, domestic animals, and wildlife, with cattle in particular serving as an important source of exposure risk to humans. The close associations between humans and cattle can facilitate the transmission of numerous VBPs, impacting public health and economic security. Published studies demonstrate that cattle can influence human exposure risk positively, negatively, or have no effect. There is a critical need to synthesize the information in the scientific literature on this subject, in order to illuminate the various ecological mechanisms that can affect VBP exposure risk in humans. Therefore, the aim of this systematic review was to review the scientific literature, provide a synthesis of the possible effects of cattle on VBP risk to humans, and propose future directions for research. This study was performed according to the PRISMA 2020 extension guidelines for systematic review. After screening 470 peer-reviewed articles published between 1999-2019 using the databases Web of Science Core Collection, PubMed Central, CABI Global Health, and Google Scholar, and utilizing forward and backward search techniques, we identified 127 papers that met inclusion criteria. Results of the systematic review indicate that cattle can be beneficial or harmful to human health with respect to VBDs depending on vector and pathogen ecology and livestock management practices. Cattle can increase risk of exposure to infections spread by tsetse flies and ticks, followed by sandflies and mosquitoes, through a variety of mechanisms. However, cattle can have a protective effect when the vector prefers to feed on cattle instead of humans and when chemical control measures (e.g., acaricides/insecticides), semio-chemicals, and other integrated vector control measures are utilized in the community. We highlight that further research is needed to determine ways in which these mechanisms may be exploited to reduce VBD risk in humans.
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Affiliation(s)
- Sulagna Chakraborty
- Program in Ecology, Evolution & Conservation Biology, University of Illinois Urbana-Champaign; Urbana, Illinois, United Sates of America
| | - Siyu Gao
- School of Social Work, The University of Minnesota, Twin Cities, Minnesota, United Sates of America
| | - Brian. F. Allan
- Program in Ecology, Evolution & Conservation Biology, University of Illinois Urbana-Champaign; Urbana, Illinois, United Sates of America
- Department of Entomology, University of Illinois Urbana-Champaign, Urbana, Illinois, United Sates of America
| | - Rebecca Lee Smith
- Program in Ecology, Evolution & Conservation Biology, University of Illinois Urbana-Champaign; Urbana, Illinois, United Sates of America
- Department of Pathobiology, University of Illinois Urbana-Champaign, Urbana, Illinois, United Sates of America
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7
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Ogola EO, Kopp A, Bastos ADS, Slothouwer I, Omoga DCA, Osalla J, Sang R, Torto B, Junglen S, Tchouassi DP. Phlebovirus diversity in ticks from livestock in arid ecologies in Kenya. Ticks Tick Borne Dis 2023; 14:102087. [PMID: 36459866 DOI: 10.1016/j.ttbdis.2022.102087] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2022] [Revised: 10/11/2022] [Accepted: 11/09/2022] [Indexed: 11/21/2022]
Abstract
Phleboviruses are emerging pathogens of public health importance. However, their association with ticks is poorly described, particularly in Africa. Here, adult ticks infesting cattle, goats and sheep were collected in two dryland pastoralist ecosystems of Kenya (Baringo and Kajiado counties) and were screened for infection with phleboviruses. Ticks mainly belonged to the species Rhipicephalus appendiculatus, Hyalomma impeltatum, and Hyalomma rufipes. A fragment of the RNA-dependent RNA polymerase (RdRp) gene was identified in thirty of 671 tick pools, of which twenty-nine were from livestock sampled in Baringo county. Phylogenetic analyses revealed that twenty-five sequences were falling in three clades within the group of tick-associated phleboviruses. The sequences of the three clades showed nucleotide distances 8%, 19% and 22%, respectively, to previously known viruses suggesting that these sequence fragments may belong to three distinct viruses. Viruses of the group of tick-associated phleboviruses have been found in several countries and continents but so far have not been associated with disease in humans or animals. In addition, five sequences were found to group with the sandfly-associated phleboviruses Bogoria virus, Perkerra virus and Ntepes virus recently detected in the same region. Further studies are needed to investigate the transmission and maintenance cycles of these viruses, as well as to assess their potential to infect vertebrates.
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Affiliation(s)
- Edwin O Ogola
- International Centre of Insect Physiology and Ecology (icipe), P.O. Box 30772-00100, Nairobi, Kenya; Department of Zoology and Entomology, University of Pretoria, Private Bag 20, Pretoria 0028, South Africa
| | - Anne Kopp
- Institute of Virology, Charité Universitätsmedizin Berlin, Corporate Member of Free University Berlin, Humboldt-University Berlin, and Berlin Institute of Health, Chariteplatz 1, 10117 Berlin, Germany
| | - Armanda D S Bastos
- Department of Zoology and Entomology, University of Pretoria, Private Bag 20, Pretoria 0028, South Africa
| | - Inga Slothouwer
- Institute of Virology, Charité Universitätsmedizin Berlin, Corporate Member of Free University Berlin, Humboldt-University Berlin, and Berlin Institute of Health, Chariteplatz 1, 10117 Berlin, Germany
| | - Dorcus C A Omoga
- International Centre of Insect Physiology and Ecology (icipe), P.O. Box 30772-00100, Nairobi, Kenya
| | - Josephine Osalla
- International Centre of Insect Physiology and Ecology (icipe), P.O. Box 30772-00100, Nairobi, Kenya
| | - Rosemary Sang
- International Centre of Insect Physiology and Ecology (icipe), P.O. Box 30772-00100, Nairobi, Kenya
| | - Baldwyn Torto
- International Centre of Insect Physiology and Ecology (icipe), P.O. Box 30772-00100, Nairobi, Kenya; Department of Zoology and Entomology, University of Pretoria, Private Bag 20, Pretoria 0028, South Africa
| | - Sandra Junglen
- Institute of Virology, Charité Universitätsmedizin Berlin, Corporate Member of Free University Berlin, Humboldt-University Berlin, and Berlin Institute of Health, Chariteplatz 1, 10117 Berlin, Germany.
| | - David P Tchouassi
- International Centre of Insect Physiology and Ecology (icipe), P.O. Box 30772-00100, Nairobi, Kenya.
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8
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Agboli E, Tomazatos A, Maiga-Ascofaré O, May J, Lühken R, Schmidt-Chanasit J, Jöst H. Arbovirus Epidemiology: The Mystery of Unnoticed Epidemics in Ghana, West Africa. Microorganisms 2022; 10:1914. [PMID: 36296190 PMCID: PMC9610185 DOI: 10.3390/microorganisms10101914] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2022] [Revised: 09/20/2022] [Accepted: 09/21/2022] [Indexed: 11/29/2022] Open
Abstract
It is evident that all the countries surrounding Ghana have experienced epidemics of key arboviruses of medical importance, such as the recent dengue fever epidemic in Burkina Faso. Therefore, Ghana is considered a ripe zone for epidemics of arboviruses, mainly dengue. Surprisingly, Ghana never experienced the propounded deadly dengue epidemic. Indeed, it is mysterious because the mosquito vectors capable of transmitting the dengue virus, such as Aedes aegypti, were identified in Ghana through entomological investigations. Additionally, cases may be missed, as the diagnostic and surveillance capacities of the country are weak. Therefore, we review the arbovirus situation and outline probable reasons for the epidemic mystery in the country. Most of the recorded cases of arbovirus infections were usually investigated via serology by detecting IgM and IgG immunoglobulins in clinical samples, which is indicative of prior exposure but not an active case. This led to the identification of yellow fever virus and dengue virus as the main circulating arboviruses among the Ghanaian population. However, major yellow fever epidemics were reported for over a decade. It is important to note that the reviewed arboviruses were not frequently detected in the vectors. The data highlight the necessity of strengthening the diagnostics and the need for continuous arbovirus and vector surveillance to provide an early warning system for future arbovirus epidemics.
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Affiliation(s)
- Eric Agboli
- Bernhard Nocht Institute for Tropical Medicine, WHO Collaborating Centre for Arbovirus and Haemorrhagic Fever Reference and Research, 20359 Hamburg, Germany
- University of Health and Allied Sciences, Ho PMB 31, Ghana
| | - Alexandru Tomazatos
- Bernhard Nocht Institute for Tropical Medicine, WHO Collaborating Centre for Arbovirus and Haemorrhagic Fever Reference and Research, 20359 Hamburg, Germany
| | - Oumou Maiga-Ascofaré
- Bernhard Nocht Institute for Tropical Medicine, WHO Collaborating Centre for Arbovirus and Haemorrhagic Fever Reference and Research, 20359 Hamburg, Germany
- Kumasi Centre for Collaborative Research in Tropical Medicine, Kwame Nkrumah University of Science and Technology, PMB, Kumasi 039-5028, Ghana
| | - Jürgen May
- Bernhard Nocht Institute for Tropical Medicine, WHO Collaborating Centre for Arbovirus and Haemorrhagic Fever Reference and Research, 20359 Hamburg, Germany
| | - Renke Lühken
- Bernhard Nocht Institute for Tropical Medicine, WHO Collaborating Centre for Arbovirus and Haemorrhagic Fever Reference and Research, 20359 Hamburg, Germany
| | - Jonas Schmidt-Chanasit
- Bernhard Nocht Institute for Tropical Medicine, WHO Collaborating Centre for Arbovirus and Haemorrhagic Fever Reference and Research, 20359 Hamburg, Germany
- Faculty of Mathematics, Informatics and Natural Sciences, Universität Hamburg, 20359 Hamburg, Germany
| | - Hanna Jöst
- Bernhard Nocht Institute for Tropical Medicine, WHO Collaborating Centre for Arbovirus and Haemorrhagic Fever Reference and Research, 20359 Hamburg, Germany
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9
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Pang Z, Jin Y, Pan M, Zhang Y, Wu Z, Liu L, Niu G. Geographical distribution and phylogenetic analysis of Jingmen tick virus in China. iScience 2022; 25:105007. [PMID: 36097615 PMCID: PMC9463580 DOI: 10.1016/j.isci.2022.105007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2022] [Revised: 07/08/2022] [Accepted: 08/19/2022] [Indexed: 11/26/2022] Open
Abstract
Jingmen tick virus (JMTV) is a novel tick-borne segmented RNA virus that is closely related to un-segmental RNA virus in evolution. It has been confirmed that JMTV could be a causative agent of human disease. In this study, a total of 3658 ticks were sampled from 7 provinces of China and then divided into 545 pools according to the location and species. QRT-PCR and nested PCR were performed to confirm the presence of JMTV. The results showed JMTV was identified in 5 out of 7 provinces with an average infection rate of 1.4% (51/3658). Phylogenetic analysis indicated that all JMTV strains identified in this study were closely related to each other and formed a well-supported sub-lineage. Our results provide molecular evidence of JMTV in different species of ticks from endemic and non-endemic regions and demonstrate that JMTV, as a natural foci pathogen, may be widely distributed all over China. JMTV was first identified in unrecognized endemic regions of China Two complete genomes and 13 partial S1 segments of JMTV were sequenced and analyzed JMTV was relatively conservative in evolution JMTV was widely distributed in China as a potential health threat to humans and animals
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10
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Detection of Jingmenviruses in Japan with Evidence of Vertical Transmission in Ticks. Viruses 2021; 13:v13122547. [PMID: 34960816 PMCID: PMC8709010 DOI: 10.3390/v13122547] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2021] [Revised: 12/03/2021] [Accepted: 12/17/2021] [Indexed: 12/04/2022] Open
Abstract
Jingmen tick virus (JMTV) and the related jingmenvirus-termed Alongshan virus are recognized as globally emerging human pathogenic tick-borne viruses. These viruses have been detected in various mammals and invertebrates, although their natural transmission cycles remain unknown. JMTV and a novel jingmenvirus, tentatively named Takachi virus (TAKV), have now been identified during a surveillance of tick-borne viruses in Japan. JMTV was shown to be distributed across extensive areas of Japan and has been detected repeatedly at the same collection sites over several years, suggesting viral circulation in natural transmission cycles in these areas. Interestingly, these jingmenviruses may exist in a host tick species-specific manner. Vertical transmission of the virus in host ticks in nature was also indicated by the presence of JMTV in unfed host-questing Amblyomma testudinarium larvae. Further epidemiological surveillance and etiological studies are necessary to assess the status and risk of jingmenvirus infection in Japan.
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11
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Amoa-Bosompem M, Kobayashi D, Faizah AN, Kimura S, Antwi A, Agbosu E, Pratt D, Ohashi M, Bonney JHK, Dadzie S, Ejiri H, Ohta N, Sawabe K, Iwanaga S, Isawa H. Screening for tick-borne and tick-associated viruses in ticks collected in Ghana. Arch Virol 2021; 167:123-130. [PMID: 34757503 DOI: 10.1007/s00705-021-05296-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2021] [Accepted: 10/01/2021] [Indexed: 10/19/2022]
Abstract
Ticks are blood-sucking arthropods that transmit many pathogens, including arboviruses. Arboviruses transmitted by ticks are generally referred to as tick-borne viruses (TBVs). TBVs are known to cause diseases in humans, pets, and livestock. There is, however, very limited information on the occurrence and distribution of TBVs in sub-Saharan Africa. This study was designed to determine the presence and distribution of ticks infesting dogs and cattle in Ghana, as well as to identify the tick-borne or tick-associated viruses they harbour. A more diverse population of ticks was found to infest cattle (three genera) relative to those infesting dogs (one genus). Six phleboviruses and an orthonairovirus were detected in tick pools screened by RT-PCR. Subsequent sequence analysis revealed two distinct phleboviruses and the previously reported Odaw virus in ticks collected from dogs and a virus (16GH-T27) most closely related to four unclassified phleboviruses in ticks collected from cattle. The virus 16GH-T27 was considered a strain of Balambala tick virus (BTV) and named BTV strain 16GH-T27. Next-generation sequencing analysis of the BTV-positive tick pool detected only the L and S segments. Phylogenetic analysis revealed that BTV clustered with viruses previously defined as M-segment-deficient phleboviruses. The orthonairovirus detected in ticks collected from cattle was confirmed to be the medically important Dugbe virus. Furthermore, we discuss the importance of understanding the presence and distribution of ticks and TBVs in disease prevention and mitigation and the implications for public health. Our findings contribute to the knowledge pool on TBVs and tick-associated viruses.
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Affiliation(s)
- Michael Amoa-Bosompem
- Department of Medical Entomology, National Institute of Infectious Diseases, 1-23-1 Toyama, Shinjuku-ku, Tokyo, 162-8640, Japan.,Laboratory of Sanitary Entomology, Faculty of Agriculture, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka, 819-0395, Japan.,Department of Parasitology, Noguchi Memorial Institute for Medical Research, University of Ghana, College of Health Sciences, P.O. Box LG581, Legon, Accra, Ghana.,Department of Biomedical and Diagnostic Sciences, School of Veterinary Medicine, University of Tennessee, 2407 River Drive, Knoxville, TN, 37996, USA
| | - Daisuke Kobayashi
- Department of Medical Entomology, National Institute of Infectious Diseases, 1-23-1 Toyama, Shinjuku-ku, Tokyo, 162-8640, Japan
| | - Astri Nur Faizah
- Department of Medical Entomology, National Institute of Infectious Diseases, 1-23-1 Toyama, Shinjuku-ku, Tokyo, 162-8640, Japan.,Graduate School of Agricultural and Life Science, The University of Tokyo, 1-1-1 Yayoi, Bunkyo-ku, Tokyo, 113-8657, Japan
| | - Shohei Kimura
- Department of Environmental Parasitology, Tokyo Medical and Dental University, 1-5-45 Yushima, Bunkyo-ku, Tokyo, 113-8510, Japan
| | - Ama Antwi
- Department of Parasitology, Noguchi Memorial Institute for Medical Research, University of Ghana, College of Health Sciences, P.O. Box LG581, Legon, Accra, Ghana
| | - Esinam Agbosu
- Department of Virology, Noguchi Memorial Institute for Medical Research, University of Ghana, College of Health Sciences, P.O. Box LG581, Legon, Accra, Ghana
| | - Deborah Pratt
- Department of Virology, Noguchi Memorial Institute for Medical Research, University of Ghana, College of Health Sciences, P.O. Box LG581, Legon, Accra, Ghana
| | - Mitsuko Ohashi
- Department of Parasitology, Noguchi Memorial Institute for Medical Research, University of Ghana, College of Health Sciences, P.O. Box LG581, Legon, Accra, Ghana.,Department of Environmental Parasitology, Tokyo Medical and Dental University, 1-5-45 Yushima, Bunkyo-ku, Tokyo, 113-8510, Japan
| | - Joseph H Kofi Bonney
- Department of Virology, Noguchi Memorial Institute for Medical Research, University of Ghana, College of Health Sciences, P.O. Box LG581, Legon, Accra, Ghana
| | - Samuel Dadzie
- Department of Parasitology, Noguchi Memorial Institute for Medical Research, University of Ghana, College of Health Sciences, P.O. Box LG581, Legon, Accra, Ghana
| | - Hiroko Ejiri
- Department of Medical Entomology, National Institute of Infectious Diseases, 1-23-1 Toyama, Shinjuku-ku, Tokyo, 162-8640, Japan
| | - Nobuo Ohta
- Faculty of Health Science, Suzuka University of Medical Science, 1001-1 Kishioka-cyo, Suzuka-shi, Mie, 510-0293, Japan
| | - Kyoko Sawabe
- Department of Medical Entomology, National Institute of Infectious Diseases, 1-23-1 Toyama, Shinjuku-ku, Tokyo, 162-8640, Japan
| | - Shiroh Iwanaga
- Department of Environmental Parasitology, Tokyo Medical and Dental University, 1-5-45 Yushima, Bunkyo-ku, Tokyo, 113-8510, Japan.,Research Institute for Microbial Diseases, 3-1 Yamadaoka, Osaka, 565-0871, Suita, Japan
| | - Haruhiko Isawa
- Department of Medical Entomology, National Institute of Infectious Diseases, 1-23-1 Toyama, Shinjuku-ku, Tokyo, 162-8640, Japan.
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12
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Daodu OB, Eisenbarth A, Schulz A, Hartlaub J, Olopade JO, Oluwayelu DO, Groschup MH. Molecular detection of dugbe orthonairovirus in cattle and their infesting ticks (Amblyomma and Rhipicephalus (Boophilus)) in Nigeria. PLoS Negl Trop Dis 2021; 15:e0009905. [PMID: 34788303 PMCID: PMC8598060 DOI: 10.1371/journal.pntd.0009905] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2021] [Accepted: 10/12/2021] [Indexed: 11/27/2022] Open
Abstract
Dugbe orthonairovirus (DUGV), a tick-borne zoonotic arbovirus, was first isolated in 1964 in Nigeria. For over four decades, no active surveillance was conducted to monitor the spread and genetic variation of DUGV. This study detected and genetically characterized DUGV circulating in cattle and their infesting ticks (Amblyomma and Rhipicephalus (Boophilus)) in Kwara State, North-Central Nigeria. Blood and or ticks were collected from 1051 cattle at 31 sampling sites (abattoirs and farms) across 10 local government areas of the State. DUGV detection was carried out by RT-qPCR, and positive samples sequenced and phylogenetically analysed. A total of 11824 ticks, mostly A. variegatum (36.0%) and R. (B.) microplus (63.9%), were obtained with mean tick burden of 12 ticks/cattle. Thirty-four (32 A. variegatum and two R. (B.) microplus) of 4644 examined ticks were DUGV-positive, whereas all of the cattle sera tested negative for DUGV genome. Whole genome sequence (S, M and L segments) and phylogenetic analyses indicate that the positive samples shared up to 99.88% nucleotide identity with and clustered around the Nigerian DUGV prototype strain IbAr 1792. Hence, DUGV with high similarity to the previously characterised strain has been detected in Nigeria. To our knowledge, this is the first report of DUGV in North-Central Nigeria and the most recent information after its last surveillance in 1974.
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Affiliation(s)
- Oluwafemi Babatunde Daodu
- Department of Veterinary Microbiology, Faculty of Veterinary Medicine, University of Ilorin, Ilorin, Nigeria
| | - Albert Eisenbarth
- Institute of Novel and Emerging Infectious Diseases, Friedrich-Loeffler-Institut, Greifswald–Insel Riems, Germany
- Bundeswehr Hospital Hamburg, Branch Tropical Microbiology and Entomology, Hamburg, Germany
| | - Ansgar Schulz
- Institute of Novel and Emerging Infectious Diseases, Friedrich-Loeffler-Institut, Greifswald–Insel Riems, Germany
| | - Julia Hartlaub
- Institute of Novel and Emerging Infectious Diseases, Friedrich-Loeffler-Institut, Greifswald–Insel Riems, Germany
| | - James Olukayode Olopade
- Department of Veterinary Anatomy, Faculty of Veterinary Medicine, University of Ibadan, Ibadan, Nigeria
| | - Daniel Oladimeji Oluwayelu
- Department of Veterinary Microbiology, Faculty of Veterinary Medicine, University of Ibadan, Ibadan, Nigeria
- Center for Control and Prevention of Zoonoses, Faculty of Veterinary Medicine, University of Ibadan, Ibadan, Nigeria
| | - Martin H. Groschup
- Institute of Novel and Emerging Infectious Diseases, Friedrich-Loeffler-Institut, Greifswald–Insel Riems, Germany
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13
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Zhang Y, Hu B, Agwanda B, Fang Y, Wang J, Kuria S, Yang J, Masika M, Tang S, Lichoti J, Fan Z, Shi Z, Ommeh S, Wang H, Deng F, Shen S. Viromes and surveys of RNA viruses in camel-derived ticks revealing transmission patterns of novel tick-borne viral pathogens in Kenya. Emerg Microbes Infect 2021; 10:1975-1987. [PMID: 34570681 PMCID: PMC8525980 DOI: 10.1080/22221751.2021.1986428] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Tick-borne viruses (TBVs) capable of transmitting between ticks and hosts have been increasingly recognized as a global public health concern. In this study, Hyalomma ticks and serum samples from camels were collected using recorded sampling correlations in eastern Kenya. Viromes of pooled ticks were profiled by metagenomic sequencing, revealing a diverse community of viruses related to at least 11 families. Five highly abundant viruses, including three novel viruses (Iftin tick virus, Mbalambala tick virus [MATV], and Bangali torovirus [BanToV]) and new strains of previously identified viruses (Bole tick virus 4 [BLTV4] and Liman tick virus [LMTV]), were characterized in terms of genome sequences, organizations, and phylogeny, and their molecular prevalence was investigated in individual ticks. Moreover, viremia and antibody responses to these viruses have been investigated in camels. MATV, BLTV4, LMTV, and BanToV were identified as viral pathogens that can potentially cause zoonotic diseases. The transmission patterns of these viruses were summarized, suggesting three different types according to the sampling relationships between viral RNA-positive ticks and camels positive for viral RNA and/or antibodies. They also revealed the frequent transmission of BanToV and limited but effective transmission of other viruses between ticks and camels. Furthermore, follow-up surveys on TBVs from tick, animal, and human samples with definite sampling relationships are suggested. The findings revealed substantial threats from the emerging TBVs and may guide the prevention and control of TBV-related zoonotic diseases in Kenya and in other African countries.
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Affiliation(s)
- You Zhang
- State Key Laboratory of Virology and National Virus Resource Centre, Wuhan Institute of Virology, Chinese Academy of Sciences, Wuhan, People's Republic of China.,University of Chinese Academy of Sciences, Beijing, People's Republic of China
| | - Ben Hu
- CAS Key Laboratory of Special Pathogens and Biosafety, Wuhan Institute of Virology, Chinese Academy of Sciences, Wuhan, People's Republic of China
| | - Bernard Agwanda
- Department of Zoology, National Museums of Kenya, Nairobi, Kenya
| | - Yaohui Fang
- State Key Laboratory of Virology and National Virus Resource Centre, Wuhan Institute of Virology, Chinese Academy of Sciences, Wuhan, People's Republic of China.,University of Chinese Academy of Sciences, Beijing, People's Republic of China
| | - Jun Wang
- State Key Laboratory of Virology and National Virus Resource Centre, Wuhan Institute of Virology, Chinese Academy of Sciences, Wuhan, People's Republic of China
| | - Stephen Kuria
- Institute For Biotechnology Research (IBR), Jomo Kenyatta University of Agriculture and Technology (JKUAT), Nairobi, Kenya
| | - Juan Yang
- State Key Laboratory of Virology and National Virus Resource Centre, Wuhan Institute of Virology, Chinese Academy of Sciences, Wuhan, People's Republic of China
| | - Moses Masika
- Department of Medical Microbiology, University of Nairobi Nairobi, Kenya
| | - Shuang Tang
- State Key Laboratory of Virology and National Virus Resource Centre, Wuhan Institute of Virology, Chinese Academy of Sciences, Wuhan, People's Republic of China
| | - Jacqueline Lichoti
- Directorate of Veterinary Services, State Department of Livestock, Ministry of Agriculture, Livestock, Fisheries and Irrigation, Nairobi, Kenya
| | - Zhaojun Fan
- State Key Laboratory of Virology and National Virus Resource Centre, Wuhan Institute of Virology, Chinese Academy of Sciences, Wuhan, People's Republic of China
| | - Zhengli Shi
- CAS Key Laboratory of Special Pathogens and Biosafety, Wuhan Institute of Virology, Chinese Academy of Sciences, Wuhan, People's Republic of China
| | - Sheila Ommeh
- Institute For Biotechnology Research (IBR), Jomo Kenyatta University of Agriculture and Technology (JKUAT), Nairobi, Kenya
| | - Hualin Wang
- State Key Laboratory of Virology and National Virus Resource Centre, Wuhan Institute of Virology, Chinese Academy of Sciences, Wuhan, People's Republic of China
| | - Fei Deng
- State Key Laboratory of Virology and National Virus Resource Centre, Wuhan Institute of Virology, Chinese Academy of Sciences, Wuhan, People's Republic of China
| | - Shu Shen
- State Key Laboratory of Virology and National Virus Resource Centre, Wuhan Institute of Virology, Chinese Academy of Sciences, Wuhan, People's Republic of China
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14
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Toyo virus, a novel member of the Kaisodi group in the genus Uukuvirus (family Phenuiviridae) found in Haemaphysalis formosensis ticks in Japan. Arch Virol 2021; 166:2751-2762. [PMID: 34341873 DOI: 10.1007/s00705-021-05193-w] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2021] [Accepted: 06/08/2021] [Indexed: 10/20/2022]
Abstract
Ticks are important vector arthropods that transmit various pathogens to humans and other animals. Tick-borne viruses are of particular concern to public health as these are major agents of emerging and re-emerging infectious diseases. The Phenuiviridae family of tick-borne viruses is one of the most diverse groups and includes important human pathogenic viruses such as severe fever with thrombocytopenia syndrome virus. Phenuivirus-like sequences were detected during the surveillance of tick-borne viruses using RNA virome analysis from a pooled sample of Haemaphysalis formosensis ticks collected in Ehime, Japan. RT-PCR amplification and Sanger sequencing revealed the nearly complete viral genome sequence of all three segments. Comparisons of the viral amino acid sequences among phenuiviruses indicated that the detected virus shared 46%-70% sequence identity with known members of the Kaisodi group in the genus Uukuvirus. Furthermore, phylogenetic analysis of the viral proteins showed that the virus formed a cluster with the Kaisodi group viruses, suggesting that this was a novel virus, which was designated "Toyo virus" (TOYOV). Further investigation of TOYOV is needed, and it will contribute to understanding the natural history and the etiological importance of the Kaisodi group viruses.
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15
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Kobayashi D, Watanabe M, Faizah AN, Amoa-Bosompem M, Higa Y, Tsuda Y, Sawabe K, Isawa H. Discovery of a Novel Flavivirus (Flaviviridae) From the Horse Fly, Tabanus rufidens (Diptera: Tabanidae): The Possible Coevolutionary Relationships Between the Classical Insect-Specific Flaviviruses and Host Dipteran Insects. JOURNAL OF MEDICAL ENTOMOLOGY 2021; 58:880-890. [PMID: 33710314 DOI: 10.1093/jme/tjaa193] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/15/2020] [Indexed: 06/12/2023]
Abstract
Tabanid flies (Tabanidae: Diptera) are common hematophagous insects known to transmit some pathogens mechanically or biologically to animals; they are widely distributed throughout the world. However, no tabanid-borne viruses, except mechanically transmitted viruses, have been reported to date. In this study, we conducted RNA virome analysis of several human-biting tabanid species in Japan, to discover and characterize viruses associated with tabanids. A novel flavivirus was encountered during the study in the Japanese horse fly, Tabanus rufidens (Bigot, 1887). The virus was detected only in T. rufidens, but not in other tabanid species, and as such was designated Tabanus rufidens flavivirus (TrFV). TrFV could not be isolated using a mammalian cell line and showed a closer phylogenetic relationship to the classical insect-specific flaviviruses (cISFs) rather than the vertebrate-infecting flaviviruses (VIFs), suggesting that it is a novel member of the cISFs. The first discovery of a cISF from Brachycera provides new insight into the evolutionary history and dynamics of flaviviruses.
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Affiliation(s)
- Daisuke Kobayashi
- Department of Medical Entomology, National Institute of Infectious Diseases, Shinjuku-ku, Tokyo, Japan
- Department of Research Promotion, Japan Agency for Medical Research and Development, Otemachi, Chiyoda-ku, Tokyo, Japan
| | - Mamoru Watanabe
- Department of Medical Entomology, National Institute of Infectious Diseases, Shinjuku-ku, Tokyo, Japan
| | - Astri Nur Faizah
- Department of Medical Entomology, National Institute of Infectious Diseases, Shinjuku-ku, Tokyo, Japan
| | - Michael Amoa-Bosompem
- Department of Medical Entomology, National Institute of Infectious Diseases, Shinjuku-ku, Tokyo, Japan
| | - Yukiko Higa
- Department of Medical Entomology, National Institute of Infectious Diseases, Shinjuku-ku, Tokyo, Japan
| | - Yoshio Tsuda
- Department of Medical Entomology, National Institute of Infectious Diseases, Shinjuku-ku, Tokyo, Japan
| | - Kyoko Sawabe
- Department of Medical Entomology, National Institute of Infectious Diseases, Shinjuku-ku, Tokyo, Japan
| | - Haruhiko Isawa
- Department of Medical Entomology, National Institute of Infectious Diseases, Shinjuku-ku, Tokyo, Japan
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16
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Experimental Challenge of Sheep and Cattle with Dugbe Orthonairovirus, a Neglected African Arbovirus Distantly Related to CCHFV. Viruses 2021; 13:v13030372. [PMID: 33652845 PMCID: PMC7996740 DOI: 10.3390/v13030372] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2021] [Revised: 02/22/2021] [Accepted: 02/23/2021] [Indexed: 01/28/2023] Open
Abstract
Dugbe orthonairovirus (DUGV) is a tick-borne arbovirus within the order Bunyavirales. DUGV was first isolated in Nigeria, but virus isolations in ten further African countries indicate that DUGV is widespread throughout Africa. Humans can suffer from a mild febrile illness, hence, DUGV is classified as a biosafety level (BSL) 3 agent. In contrast, no disease has been described in animals, albeit serological evidence exists that ruminants are common hosts and may play an important role in the transmission cycle of this neglected arbovirus. In this study, young sheep and calves were experimentally inoculated with DUGV in order to determine their susceptibility and to study the course of infection. Moreover, potential antibody cross-reactivities in currently available diagnostic assays for Crimean-Congo hemorrhagic fever orthonairovirus (CCHFV) were assessed as DUGV is distantly related to CCHFV. Following subcutaneous inoculation, none of the animals developed clinical signs or viremia. However, all ruminants seroconverted, as demonstrated by two DUGV neutralization test formats (micro-virus neutralization test (mVNT), plaque reduction (PRNT)), by indirect immunofluorescence assays and in bovines by a newly developed DUGV recombinant N protein ELISA. Sera did not react in commercial CCHFV ELISAs, whereas cross-reactivities were observed by immunofluorescence and immunoblot assays.
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17
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Simulundu E, Mbambara S, Chambaro HM, Sichibalo K, Kajihara M, Nalubamba KS, Sawa H, Takada A, Changula K, Chitanga S. Prevalence and genetic diversity of Shibuyunji virus, a novel tick-borne phlebovirus identified in Zambia. Arch Virol 2021; 166:915-919. [PMID: 33475831 DOI: 10.1007/s00705-020-04924-9] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2020] [Accepted: 11/04/2020] [Indexed: 11/27/2022]
Abstract
Tick-borne pathogens are an emerging public health threat worldwide. However, information on tick-borne viruses is scanty in sub-Saharan Africa. Here, by RT-PCR, 363 ticks (Amblyomma, Hyalomma and Rhipicephalus) in the Namwala and Livingstone districts of Zambia were screened for tick-borne phleboviruses (TBPVs). TBPVs (L gene) were detected in 19 (5.2%) Rhipicephalus ticks in Namwala. All the detected TBPVs were Shibuyunji viruses. Phylogenetically, they were closely related to American dog tick phlebovirus. This study highlights the possible role of Rhipicephalus ticks as the main host of Shibuyunji virus and suggests that these viruses may be present outside the area where they were initially discovered.
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Affiliation(s)
- Edgar Simulundu
- Macha Research Trust, P.O. Box 630166, Choma, Zambia.
- Department of Disease Control, School of Veterinary Medicine, University of Zambia, Lusaka, Zambia.
| | - Saidon Mbambara
- Department of Disease Control, School of Veterinary Medicine, University of Zambia, Lusaka, Zambia
- Department of Biomedical Sciences, Tropical Diseases Research Center, Ndola, Zambia
| | - Herman M Chambaro
- Research Center for Zoonosis Control, Hokkaido University, Sapporo, Japan
- Virology Unit, Central Veterinary Research Institute, Ministry of Fisheries and Livestock, Lusaka, Zambia
| | - Karen Sichibalo
- Department of Biomedical Sciences, School of Health Sciences, University of Zambia, Lusaka, Zambia
| | - Masahiro Kajihara
- Research Center for Zoonosis Control, Hokkaido University, Sapporo, Japan
| | - King S Nalubamba
- Department of Clinical Studies, School of Veterinary Medicine, University of Zambia, Lusaka, Zambia
| | - Hirofumi Sawa
- Department of Disease Control, School of Veterinary Medicine, University of Zambia, Lusaka, Zambia
- Research Center for Zoonosis Control, Hokkaido University, Sapporo, Japan
| | - Ayato Takada
- Department of Disease Control, School of Veterinary Medicine, University of Zambia, Lusaka, Zambia
- Research Center for Zoonosis Control, Hokkaido University, Sapporo, Japan
| | - Katendi Changula
- Department of Paraclinical Studies, School of Veterinary Medicine, University of Zambia, Lusaka, Zambia
| | - Simbarashe Chitanga
- Department of Biomedical Sciences, School of Health Sciences, University of Zambia, Lusaka, Zambia
- Department of Pathobiology, School of Veterinary Medicine, University of Namibia, Windhoek, Namibia
- School of Life Sciences, College of Agriculture, Engineering and Sciences, University of KwaZulu-Natal, Durban, South Africa
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18
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Liu X, Zhang X, Wang Z, Dong Z, Xie S, Jiang M, Song R, Ma J, Chen S, Chen K, Zhang H, Si X, Li C, Jin N, Wang Y, Liu Q. A Tentative Tamdy Orthonairovirus Related to Febrile Illness in Northwestern China. Clin Infect Dis 2021; 70:2155-2160. [PMID: 31260510 DOI: 10.1093/cid/ciz602] [Citation(s) in RCA: 44] [Impact Index Per Article: 14.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2019] [Accepted: 06/29/2019] [Indexed: 11/13/2022] Open
Abstract
BACKGROUND Many novel tick-borne viruses have been discovered by deep-sequencing technology in recent years; however, their medical significance is unknown. METHODS We obtained clinical data of a patient from Xinjiang, China. Possible pathogens were detected by metagenomic analysis; the causative pathogen Tacheng tick virus 1 (TcTV-1) was found and further confirmed by reverse transcriptase-polymerase chain reaction, viral culture, and sequence analyses. Epidemiological investigation was conducted in the local human population, domestic animals, and ticks by serological/molecular methods. RESULTS A 62-year-old woman with a history of tick bite in Qinghe, Xinjiang, presented with fever and rashes. These symptoms were relieved after clinical treatment. TcTV-1 (strain QH1) was isolated from the patient's cerebrospinal fluid, throat swabs, and urine on day 47 after illness onset. Although the blood and urine showed viral RNA positive on day 73 after illness onset, the virus was only isolated from urine. Serological detection revealed a virus neutralizing antibody titer of 1:40 and 1:80 on day 47 and 73 after illness onset, respectively. No coinfection with other pathogens was detected, suggesting TcTV-1 may be the potential causative pathogen. We detected anti-TcTV-1 antibodies (immunoglobulin G: 10.1%; immunoglobulin M: 4.8%) in the local human population. The viral RNA was also found in cattle (4.9%), sheep (9.2%), and ticks, including Dermacentor marginatus (14.3%), Dermacentor silvarum (11.8%), Dermacentor nuttalli (6.7%), and Hyalomma asiaticum (4.8%). CONCLUSIONS TcTV-1 may be associated with a febrile illness syndrome, and epidemiological data of the virus in humans and animals necessitate disease surveillance of TcTV-1 infection in China.
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Affiliation(s)
- Xiafei Liu
- School of Life Sciences and Engineering, Foshan University, Changchun, China.,Department of Basic Medicine, School of Medicine, Shihezi University, Changchun, China
| | - Xu Zhang
- School of Life Sciences and Engineering, Foshan University, Changchun, China
| | - Zedong Wang
- School of Life Sciences and Engineering, Foshan University, Changchun, China
| | - Zhihui Dong
- Department of Basic Medicine, School of Medicine, Shihezi University, Changchun, China
| | - Songsong Xie
- The First Affiliated Hospital, School of Medicine, Shihezi University, Changchun, China
| | - Mengmeng Jiang
- Department of Basic Medicine, School of Medicine, Shihezi University, Changchun, China
| | - Ruixia Song
- Department of Basic Medicine, School of Medicine, Shihezi University, Changchun, China
| | - Jun Ma
- School of Life Sciences and Engineering, Foshan University, Changchun, China
| | - Shouyi Chen
- Guangzhou Center for Disease Control and Prevention, Institute of Military Veterinary, Academy of Military Medical Science, Changchun, China
| | - Kuncai Chen
- Guangzhou Center for Disease Control and Prevention, Institute of Military Veterinary, Academy of Military Medical Science, Changchun, China
| | - Haoji Zhang
- School of Life Sciences and Engineering, Foshan University, Changchun, China
| | - Xingkui Si
- School of Life Sciences and Engineering, Foshan University, Changchun, China
| | - Chang Li
- Key Laboratory of Jilin Province for Zoonosis Prevention and Control, Institute of Military Veterinary, Academy of Military Medical Science, Changchun, China
| | - Ningyi Jin
- Key Laboratory of Jilin Province for Zoonosis Prevention and Control, Institute of Military Veterinary, Academy of Military Medical Science, Changchun, China
| | - Yuanzhi Wang
- Department of Basic Medicine, School of Medicine, Shihezi University, Changchun, China
| | - Quan Liu
- School of Life Sciences and Engineering, Foshan University, Changchun, China
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19
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Kobayashi D, Komatsu N, Faizah AN, Amoa-Bosompem M, Sawabe K, Isawa H. A novel nyavirus lacking matrix and glycoprotein genes from Argas japonicus ticks. Virus Res 2020; 292:198254. [PMID: 33276024 DOI: 10.1016/j.virusres.2020.198254] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2020] [Revised: 11/27/2020] [Accepted: 11/28/2020] [Indexed: 12/25/2022]
Abstract
Viruses are highly diverse and are the sole agents that can infect organisms in all domains of life. Viruses are defined as capsid-encoding organisms as opposed to ribosome-encoding cellular organisms. However, recent advances in virology indicate the existence of unique viruses that do not meet this basic definition, such as capsidless viruses. During virome analysis of the soft tick Argas japonicus, we identified virus-like sequences closely related to the members of genus Nyavirus (family Nyamiviridae). Further analysis revealed sequences derived from a novel nyavirus that lacks two structural protein genes, matrix (M) and glycoprotein (G). This unique nyavirus is tentatively named Sekira virus (SEKRV). To our knowledge, this is the first study to report a nyavirus deficient in M and G genes in nature. The mechanism of infection, replication, and persistence of SEKRV remain unknown, yet this finding provides new insight into virus evolution and the diverse way of viral life in nature.
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Affiliation(s)
- Daisuke Kobayashi
- Department of Medical Entomology, National Institute of Infectious Diseases, 1-23-1 Toyama, Shinjuku-ku, Tokyo, 162-8640, Japan
| | - Noriyuki Komatsu
- Research and Development Department, Civil International Corporation, 1-19-4 Imado, Taito-ku, Tokyo, 111-0024, Japan
| | - Astri Nur Faizah
- Department of Medical Entomology, National Institute of Infectious Diseases, 1-23-1 Toyama, Shinjuku-ku, Tokyo, 162-8640, Japan
| | - Michael Amoa-Bosompem
- Department of Medical Entomology, National Institute of Infectious Diseases, 1-23-1 Toyama, Shinjuku-ku, Tokyo, 162-8640, Japan
| | - Kyoko Sawabe
- Department of Medical Entomology, National Institute of Infectious Diseases, 1-23-1 Toyama, Shinjuku-ku, Tokyo, 162-8640, Japan
| | - Haruhiko Isawa
- Department of Medical Entomology, National Institute of Infectious Diseases, 1-23-1 Toyama, Shinjuku-ku, Tokyo, 162-8640, Japan.
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20
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Amoa-Bosompem M, Kobayashi D, Itokawa K, Faizah AN, Kuwata R, Dadzie S, Hayashi T, Yamaoka S, Sawabe K, Iwanaga S, Isawa H. Establishment and characterization of a cell line from Ghanaian Aedes aegypti (Diptera: Culicidae) focusing on Aedes-borne flavivirus susceptibility. In Vitro Cell Dev Biol Anim 2020; 56:792-798. [PMID: 33000384 DOI: 10.1007/s11626-020-00504-y] [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: 07/01/2020] [Accepted: 09/02/2020] [Indexed: 10/23/2022]
Abstract
Mosquitoes are generally considered one of the most important vectors of arboviruses, with Aedes aegypti regarded as the most important in transmission of yellow fever and dengue viruses. To investigate why there are differences in the incidence of dengue fever and Zika in different geographical areas and an absence of outbreaks in Ghana in spite of an abundance of A. aegypti mosquitoes, we established a continuous cell line from embryonic cells of A. aegypti collected in Ghana and assessed its susceptibility to dengue, yellow fever, and Zika viruses. The new cell line (designated AeAe-GH98), having an adhesive spindle-shaped web-like morphology, was serially subcultured in both VP-12 and Schneider's medium supplemented with 10% heat-inactivated fetal bovine serum. AeAe-GH98 cells were found to have a population doubling time of 1.3 d during exponential growth. The mosquito colony used to establish the cell line was confirmed to have originated from Africa using microsatellite assay. In terms of susceptibility to Aedes-borne flaviviruses, AeAe-GH98 cells were found to have different degrees of susceptibility to yellow fever, Zika, and dengue virus infection and propagation. While susceptibility of AeAe-GH98 cells to yellow fever and Zika viruses was comparable with that of C6/36 cells, susceptibility to dengue virus was significantly lower. This cell line will serve as a useful tool for determining molecular factors influencing virus-vector susceptibility in vitro.
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Affiliation(s)
- Michael Amoa-Bosompem
- Department of Medical Entomology, National Institute of Infectious Diseases, 1-23-1 Toyama, Shinjuku-ku, Tokyo, 162-8640, Japan.,Department of Environmental Parasitology, Tokyo Medical and Dental University, 1-5-45 Yushima, Bunkyo-ku, Tokyo, 113-850, Japan.,Department of Parasitology, Noguchi Memorial Institute for Medical Research, University of Ghana, College of Health Sciences, P.O.Box LG581, Legon, Accra, Ghana
| | - Daisuke Kobayashi
- Department of Medical Entomology, National Institute of Infectious Diseases, 1-23-1 Toyama, Shinjuku-ku, Tokyo, 162-8640, Japan
| | - Kentaro Itokawa
- Pathogen Genomics Center, National Institute of Infectious Diseases, 1-23-1 Toyama, Shinjuku-ku, Tokyo, 162-8640, Japan
| | - Astri Nur Faizah
- Department of Medical Entomology, National Institute of Infectious Diseases, 1-23-1 Toyama, Shinjuku-ku, Tokyo, 162-8640, Japan.,Graduate School of Agricultural and Life Science, The University of Tokyo, 1-1-1 Yayoi, Bunkyo-ku, Tokyo, 113-8657, Japan
| | - Ryusei Kuwata
- Faculty of Veterinary Medicine, Okayama University of Science, 1-3 Ikoinooka, Imabari, Ehime, Japan
| | - Samuel Dadzie
- Department of Parasitology, Noguchi Memorial Institute for Medical Research, University of Ghana, College of Health Sciences, P.O.Box LG581, Legon, Accra, Ghana
| | - Takaya Hayashi
- Department of Molecular Virology, Tokyo Medical and Dental University, 1-5-45 Yushima, Bunkyo-ku, Tokyo, 113-850, Japan
| | - Shoji Yamaoka
- Department of Molecular Virology, Tokyo Medical and Dental University, 1-5-45 Yushima, Bunkyo-ku, Tokyo, 113-850, Japan
| | - Kyoko Sawabe
- Department of Medical Entomology, National Institute of Infectious Diseases, 1-23-1 Toyama, Shinjuku-ku, Tokyo, 162-8640, Japan
| | - Shiroh Iwanaga
- Department of Environmental Parasitology, Tokyo Medical and Dental University, 1-5-45 Yushima, Bunkyo-ku, Tokyo, 113-850, Japan
| | - Haruhiko Isawa
- Department of Medical Entomology, National Institute of Infectious Diseases, 1-23-1 Toyama, Shinjuku-ku, Tokyo, 162-8640, Japan.
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21
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Klimentov AS, Belova OA, Kholodilov IS, Butenko AM, Bespyatova LA, Bugmyrin SV, Chernetsov N, Ivannikova AY, Kovalchuk IV, Nafeev AA, Oorzhak ND, Pilikova OM, Polienko AE, Purmak KA, Romanenko EN, Romanova LI, Saryglar AA, Solomashchenko NI, Shamsutdinov AF, Vakalova EV, Lukashev AN, Karganova GG, Gmyl AP. Phlebovirus sequences detected in ticks collected in Russia: Novel phleboviruses, distinguishing criteria and high tick specificity. INFECTION GENETICS AND EVOLUTION 2020; 85:104524. [PMID: 32891876 DOI: 10.1016/j.meegid.2020.104524] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/08/2020] [Revised: 08/24/2020] [Accepted: 08/29/2020] [Indexed: 10/23/2022]
Abstract
Phlebovirus is an abundant and rather heterogeneous genus within the Phenuiviridae family (order Bunyavirales). The genus Phlebovirus is divided into two antigenic complexes, which also correspond to the main vector: sandflies/mosquitoes and ticks. Previously, only sandfly/mosquito-borne phleboviruses were associated with human disease, such as Rift Valley fever virus, Toscana virus, Sicilian and Naples Sandfly fever viruses and others. Until recently, tick-borne phleboviruses were not considered as human pathogens. After the discovery of severe fever with thrombocytopenia syndrome, interest to tick-borne phleboviruses has increased dramatically. In the last decade, many novel phleboviruses have been reported in different regions. Despite this, the diversity, ecology and pathogenicity of these viruses still remain obscure. The aim of this work was to study the diversity of phleboviruses in ticks collected in several regions of Russia. We used pan-phlebovirus RT-PCR assays based on multiple degenerate primers targeting the polymerase gene fragment. Arthropod specimens were collected from 2005 to 2018. A total of 5901 Ixodidae ticks combined into 1116 pools were screened. A total of 160 specific amplicons were produced. In three cases RT-PCR assays amplified two distinct viruses from same tick pools. Direct sequencing of amplicons and subsequent phylogenetic analysis revealed twelve representatives of divergent phlebovirus groups. Based on the distribution of pairwise nucleotide sequence identity values, a cut-off (88%) was suggested to distinguish tick-borne phleboviruses. According to this provisional criterion, two viruses found here could be termed novel, while ten viruses have been described in previous studies. Detected phleboviruses demonstrated almost perfect specificity to a tick species or, at least, a genus. The same pattern was observed for tick-borne phleboviruses found in different studies around the world. Viruses that grouped together on a phylogenetic tree and differed less than this sequence identity threshold suggested above were hosted by ticks from the same genus.
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Affiliation(s)
- Alexander S Klimentov
- Chumakov Federal Scientific Center for Research and Development of Immune-and-Biological Products of RAS, Moscow 108819, Russia; Gamaleya Research Center for Epidemiology and Microbiology of the Ministry of Health of the Russian Federation, Moscow 123098, Russia.
| | - Oxana A Belova
- Chumakov Federal Scientific Center for Research and Development of Immune-and-Biological Products of RAS, Moscow 108819, Russia
| | - Ivan S Kholodilov
- Chumakov Federal Scientific Center for Research and Development of Immune-and-Biological Products of RAS, Moscow 108819, Russia
| | - Alexander M Butenko
- Gamaleya Research Center for Epidemiology and Microbiology of the Ministry of Health of the Russian Federation, Moscow 123098, Russia
| | - Liubov A Bespyatova
- Institute of Biology, Karelian Research Centre of RAS, Petrozavodsk 185910, Russia
| | - Sergey V Bugmyrin
- Institute of Biology, Karelian Research Centre of RAS, Petrozavodsk 185910, Russia
| | - Nikita Chernetsov
- Zoological Institute of RAS, St. Petersburg 199034, Russia; Dept. Vertebrate Zoology, St. Petersburg State University, St. Petersburg 199034, Russia
| | - Anna Y Ivannikova
- Chumakov Federal Scientific Center for Research and Development of Immune-and-Biological Products of RAS, Moscow 108819, Russia
| | - Irina V Kovalchuk
- Office of Rospotrebnadzor in the Stavropol Territory, Stavropol 355008, Russia; Stavropol State Medical University, Stavropol 355017, Russia
| | - Alexander A Nafeev
- Center for Hygiene and Epidemiology in the Ulyanovsk Region, Ulyanovsk 432005, Russia
| | | | - Olga M Pilikova
- Black Sea Anti-Plague Station of Rospotrebnadzor, Novorossiysk 353919, Russia
| | - Alexandra E Polienko
- Chumakov Federal Scientific Center for Research and Development of Immune-and-Biological Products of RAS, Moscow 108819, Russia
| | - Kristina A Purmak
- Center for Hygiene and Epidemiology in the Stavropol Kray, Stavropol 355008, Russia
| | - Evgeniya N Romanenko
- Center for Hygiene and Epidemiology in the Stavropol Kray, Stavropol 355008, Russia
| | - Lidiya Iu Romanova
- Chumakov Federal Scientific Center for Research and Development of Immune-and-Biological Products of RAS, Moscow 108819, Russia; Institute for Translational Medicine and Biotechnology, Sechenov University, Moscow 119991, Russia
| | | | - Nataliya I Solomashchenko
- Stavropol State Medical University, Stavropol 355017, Russia; Center for Hygiene and Epidemiology in the Stavropol Kray, Stavropol 355008, Russia
| | - Anton F Shamsutdinov
- Kazan Scientific Research Institute of Epidemiology and Microbiology of Rospotrebnadzor, Kazan 420015, Russia
| | - Elena V Vakalova
- Astrakhan Anti-Plague Station of Rospotrebnadzor, Astrakhan 414000, Russia
| | - Alexander N Lukashev
- Martsinovsky Institute of Medical Parasitology, Tropical and Vector-Borne Diseases, Sechenov University, Moscow 119435, Russia
| | - Galina G Karganova
- Chumakov Federal Scientific Center for Research and Development of Immune-and-Biological Products of RAS, Moscow 108819, Russia; Institute for Translational Medicine and Biotechnology, Sechenov University, Moscow 119991, Russia
| | - Anatoly P Gmyl
- Chumakov Federal Scientific Center for Research and Development of Immune-and-Biological Products of RAS, Moscow 108819, Russia
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22
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Bacterial and protozoan pathogens/symbionts in ticks infecting wild grasscutters (Thryonomys swinderianus) in Ghana. Acta Trop 2020; 205:105388. [PMID: 32035054 DOI: 10.1016/j.actatropica.2020.105388] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2019] [Revised: 01/31/2020] [Accepted: 02/04/2020] [Indexed: 12/20/2022]
Abstract
Ticks and tick-borne pathogens constitute a great threat to livestock production and are a potential health hazard to humans. Grasscutters (Thryonomys swinderianus) are widely hunted for meat in Ghana and many other West and Central African countries. However, tick-borne zoonotic risks posed by wild grasscutters have not been assessed. The objective of this study was to investigate bacterial and protozoan pathogens in ticks infecting wild grasscutters. A total of 81 ticks were collected from three hunted grasscutters purchased from Kantamanto, the central bushmeat market in Accra. Ticks were identified as Ixodes aulacodi and Rhipicephalus sp. based on morphological keys, which were further confirmed by sequencing mitochondrial 16S ribosomal DNA (rDNA) and cytochrome oxidase I (COI) genes of specimens. Protozoan infections were tested by PCR amplifying 18S rDNA of Babesia/Theileria/Hepatozoon, while bacterial infections were evaluated by PCRs or real-time PCRs targeting Anaplasmataceae, Borrelia, spotted fever group rickettsiae, chlamydiae and Candidatus Midichloria mitochondrii. The results of PCR screening showed that 35.5% (27 out of 76) of I. aulacodi were positive for parasite infections. Sequencing analysis of the amplified products gave one identical sequence showing similarity with Babesia spp. reported from Africa. The Ca. M. mitochondrii endosymbiont was present in 85.5% (65 out of 76) of I. aulacodi but not in the five Rhipicephalus ticks. Two Anaplasmataceae bacteria genetically related to Ehrlichia muris and Anaplasma phagocytophilum were also detected in two I. aulacodi. None of the ticks were positive for Borrelia spp., spotted fever group rickettsiae and chlamydiae. Since I. aulacodi on wild grasscutters are potential carriers of tick-borne pathogens, some of which could be of zoonotic potential, rigorous tick control and pathogen analyses should be instituted especially when wild caught grasscutters are being used as foundation stock for breeding.
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23
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Amoa-Bosompem M, Kobayashi D, Murota K, Faizah AN, Itokawa K, Fujita R, Osei JHN, Agbosu E, Pratt D, Kimura S, Kwofie KD, Ohashi M, Bonney JHK, Dadzie S, Sasaki T, Ohta N, Isawa H, Sawabe K, Iwanaga S. Entomological Assessment of the Status and Risk of Mosquito-borne Arboviral Transmission in Ghana. Viruses 2020; 12:v12020147. [PMID: 32012771 PMCID: PMC7077231 DOI: 10.3390/v12020147] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2019] [Revised: 01/16/2020] [Accepted: 01/26/2020] [Indexed: 01/16/2023] Open
Abstract
Entomological surveillance is one of the tools used in monitoring and controlling vector-borne diseases. However, the use of entomological surveillance for arboviral infection vector control is often dependent on finding infected individuals. Although this method may suffice in highly endemic areas, it is not as effective in controlling the spread of diseases in low endemic and non-endemic areas. In this study, we examined the efficiency of using entomological markers to assess the status and risk of arbovirus infection in Ghana, which is considered a non-endemic country, by combining mosquito surveillance with virus isolation and detection. This study reports the presence of cryptic species of mosquitoes in Ghana, demonstrating the need to combine morphological identification and molecular techniques in mosquito surveillance. Furthermore, although no medically important viruses were detected, the importance of insect-specific viruses in understanding virus evolution and arbovirus transmission is discussed. This study reports the first mutualistic relationship between dengue virus and the double-stranded RNA Aedes aegypti totivirus. Finally, this study discusses the complexity of the virome of Aedes and Culex mosquitoes and its implication for arbovirus transmission.
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Affiliation(s)
- Michael Amoa-Bosompem
- Department of Environmental Parasitology, Tokyo Medical and Dental University, 1-5-45 Yushima, Bunkyo-ku, Tokyo 113-8510, Japan; (M.A.-B.); (S.K.); (K.D.K.); (M.O.)
- Department of Medical Entomology, National Institute of Infectious Diseases, 1-23-1 Toyama, Shinjuku-ku, Tokyo 162-8640, Japan; (D.K.); (A.N.F.); (T.S.); (K.S.)
- Department of Parasitology, Noguchi Memorial Institute for Medical Research, University of Ghana, College of Health Sciences, P.O. box LG 581, Legon, Accra, Ghana; (J.H.N.O.); (S.D.)
| | - Daisuke Kobayashi
- Department of Medical Entomology, National Institute of Infectious Diseases, 1-23-1 Toyama, Shinjuku-ku, Tokyo 162-8640, Japan; (D.K.); (A.N.F.); (T.S.); (K.S.)
| | - Katsunori Murota
- Kyushu Research Station, National Institute of Animal Health, NARO, 2702 Chuzan, Kagoshima 891-0105, Japan;
| | - Astri Nur Faizah
- Department of Medical Entomology, National Institute of Infectious Diseases, 1-23-1 Toyama, Shinjuku-ku, Tokyo 162-8640, Japan; (D.K.); (A.N.F.); (T.S.); (K.S.)
- Graduate School of Agricultural and Life Science, The University of Tokyo, 1-1-1 Yayoi, Bunkyo-ku, Tokyo 113-8657, Japan
| | - Kentaro Itokawa
- Pathogen Genomics Center, National Institute of Infectious Diseases, 1-23-1 Toyama, Shinjuku-ku, Tokyo 162-8640, Japan;
| | - Ryosuke Fujita
- Laboratory of Sanitary Entomology, Kyushu University Graduate School of Bioresource and Bioenvironmental Sciences, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan;
| | - Joseph Harold Nyarko Osei
- Department of Parasitology, Noguchi Memorial Institute for Medical Research, University of Ghana, College of Health Sciences, P.O. box LG 581, Legon, Accra, Ghana; (J.H.N.O.); (S.D.)
| | - Esinam Agbosu
- Department of Virology, Noguchi Memorial Institute for Medical Research, University of Ghana, College of Health Sciences, P.O. box LG 581, Legon, Accra, Ghana; (E.A.); (D.P.); (J.H.K.B.)
| | - Deborah Pratt
- Department of Virology, Noguchi Memorial Institute for Medical Research, University of Ghana, College of Health Sciences, P.O. box LG 581, Legon, Accra, Ghana; (E.A.); (D.P.); (J.H.K.B.)
| | - Shohei Kimura
- Department of Environmental Parasitology, Tokyo Medical and Dental University, 1-5-45 Yushima, Bunkyo-ku, Tokyo 113-8510, Japan; (M.A.-B.); (S.K.); (K.D.K.); (M.O.)
| | - Kofi Dadzie Kwofie
- Department of Environmental Parasitology, Tokyo Medical and Dental University, 1-5-45 Yushima, Bunkyo-ku, Tokyo 113-8510, Japan; (M.A.-B.); (S.K.); (K.D.K.); (M.O.)
- Department of Parasitology, Noguchi Memorial Institute for Medical Research, University of Ghana, College of Health Sciences, P.O. box LG 581, Legon, Accra, Ghana; (J.H.N.O.); (S.D.)
| | - Mitsuko Ohashi
- Department of Environmental Parasitology, Tokyo Medical and Dental University, 1-5-45 Yushima, Bunkyo-ku, Tokyo 113-8510, Japan; (M.A.-B.); (S.K.); (K.D.K.); (M.O.)
- Department of Parasitology, Noguchi Memorial Institute for Medical Research, University of Ghana, College of Health Sciences, P.O. box LG 581, Legon, Accra, Ghana; (J.H.N.O.); (S.D.)
| | - Joseph H. Kofi Bonney
- Department of Virology, Noguchi Memorial Institute for Medical Research, University of Ghana, College of Health Sciences, P.O. box LG 581, Legon, Accra, Ghana; (E.A.); (D.P.); (J.H.K.B.)
| | - Samuel Dadzie
- Department of Parasitology, Noguchi Memorial Institute for Medical Research, University of Ghana, College of Health Sciences, P.O. box LG 581, Legon, Accra, Ghana; (J.H.N.O.); (S.D.)
| | - Toshinori Sasaki
- Department of Medical Entomology, National Institute of Infectious Diseases, 1-23-1 Toyama, Shinjuku-ku, Tokyo 162-8640, Japan; (D.K.); (A.N.F.); (T.S.); (K.S.)
| | - Nobuo Ohta
- Faculty of Health Science, Suzuka University of Medical Science, 1001-1 Kishioka-cyo, Suzuka-shi, Mie 510-0293, Japan;
| | - Haruhiko Isawa
- Department of Medical Entomology, National Institute of Infectious Diseases, 1-23-1 Toyama, Shinjuku-ku, Tokyo 162-8640, Japan; (D.K.); (A.N.F.); (T.S.); (K.S.)
- Correspondence: (H.I.); (S.I.); Tel.: +81-3-5285-1111 (H.I.); +81-3-5803-5191 (S.I.)
| | - Kyoko Sawabe
- Department of Medical Entomology, National Institute of Infectious Diseases, 1-23-1 Toyama, Shinjuku-ku, Tokyo 162-8640, Japan; (D.K.); (A.N.F.); (T.S.); (K.S.)
| | - Shiroh Iwanaga
- Department of Environmental Parasitology, Tokyo Medical and Dental University, 1-5-45 Yushima, Bunkyo-ku, Tokyo 113-8510, Japan; (M.A.-B.); (S.K.); (K.D.K.); (M.O.)
- Correspondence: (H.I.); (S.I.); Tel.: +81-3-5285-1111 (H.I.); +81-3-5803-5191 (S.I.)
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24
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Kobayashi D, Murota K, Itokawa K, Ejiri H, Amoa-Bosompem M, Faizah AN, Watanabe M, Maekawa Y, Hayashi T, Noda S, Yamauchi T, Komagata O, Sawabe K, Isawa H. RNA virome analysis of questing ticks from Hokuriku District, Japan, and the evolutionary dynamics of tick-borne phleboviruses. Ticks Tick Borne Dis 2019; 11:101364. [PMID: 31928929 DOI: 10.1016/j.ttbdis.2019.101364] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2019] [Revised: 12/13/2019] [Accepted: 12/21/2019] [Indexed: 01/23/2023]
Abstract
Tick-borne viruses have emerged recently in many parts of the world, and the discoveries of novel tick-borne viruses have been accelerated by the development of high-throughput sequencing technology. In this study, a cost-efficient small benchtop next-generation sequencer, the Illumina MiniSeq, was used for the RNA virome analysis of questing ticks collected from Hokuriku District, Japan, and assessed for their potential utility in a tick-borne virus surveillance system. We detected two phleboviruses [Kabuto Mountain virus (KAMV) and Okutama tick virus (OKTV)], a coltivirus [Tarumizu tick virus (TarTV)], and a novel iflavirus [Hamaphysalis flava iflavirus (HfIFV)] from tick homogenates and/or cell culture supernatants after virus isolation processes. The number of sequence reads from KAMV and TarTV markedly increased when cell culture supernatants were used, indicating a successful isolation of these viruses. In contrast, OKTV and HfIFV were detected only in tick homogenates but not from cell culture supernatants, suggesting a failure to isolate these viruses. Furthermore, we performed genomic and phylogenetic analyzes of these detected viruses. OKTV and some phleboviruses discovered recently by NGS-based methods were probably deficient in the M genome segment, which are herein proposed as M segment-deficient phlebovirus (MdPV). A phylogenetic analysis of phleboviruses, including MdPV, suggested that Uukuniemi and Kaisodi group viruses and kabutoviruses evolved from an ancestral MdPV, which provides insights into the evolutionary dynamics of phleboviruses as emerging pathogens.
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Affiliation(s)
- Daisuke Kobayashi
- Department of Medical Entomology, National Institute of Infectious Diseases, 1-23-1 Toyama, Shinjuku-ku, Tokyo 162-8640, Japan; Department of Research Promotion, Japan Agency for Medical Research and Development, 20F Yomiuri Shimbun Bldg. 1-7-1 Otemachi, Chiyoda-ku, Tokyo 100-0004, Japan
| | - Katsunori Murota
- Department of Medical Entomology, National Institute of Infectious Diseases, 1-23-1 Toyama, Shinjuku-ku, Tokyo 162-8640, Japan; Kyushu Research Station, National Institute of Animal Health, NARO, 2702 Chuzan, Kagoshima 891-0105, Japan
| | - Kentaro Itokawa
- Department of Medical Entomology, National Institute of Infectious Diseases, 1-23-1 Toyama, Shinjuku-ku, Tokyo 162-8640, Japan; Pathogen genomics center, National Institute of Infectious Diseases, 1-23-1 Toyama, Shinjuku-ku, Tokyo 162-8640, Japan
| | - Hiroko Ejiri
- Department of Medical Entomology, National Institute of Infectious Diseases, 1-23-1 Toyama, Shinjuku-ku, Tokyo 162-8640, Japan; Division of infectious Diseases Epidemiology and Control, National Defense Medical Research Institute, National Defense Medical College, 3-2 Namiki, Tokorozawa, Saitama 359-8513, Japan
| | - Michael Amoa-Bosompem
- Department of Medical Entomology, National Institute of Infectious Diseases, 1-23-1 Toyama, Shinjuku-ku, Tokyo 162-8640, Japan
| | - Astri Nur Faizah
- Department of Medical Entomology, National Institute of Infectious Diseases, 1-23-1 Toyama, Shinjuku-ku, Tokyo 162-8640, Japan
| | - Mamoru Watanabe
- Department of Medical Entomology, National Institute of Infectious Diseases, 1-23-1 Toyama, Shinjuku-ku, Tokyo 162-8640, Japan
| | - Yoshihide Maekawa
- Department of Medical Entomology, National Institute of Infectious Diseases, 1-23-1 Toyama, Shinjuku-ku, Tokyo 162-8640, Japan
| | - Toshihiko Hayashi
- Department of Medical Entomology, National Institute of Infectious Diseases, 1-23-1 Toyama, Shinjuku-ku, Tokyo 162-8640, Japan
| | - Shinichi Noda
- Research Center for the Pacific Islands, Kagoshima University, 1-21-24 Korimoto, Kagoshima 890-8580, Japan
| | - Takeo Yamauchi
- Laboratory of Entomology, Obihiro University of Agriculture and Veterinary Medicine, Inada-cho, Obihiro, Hokkaido 080-8555, Japan
| | - Osamu Komagata
- Department of Medical Entomology, National Institute of Infectious Diseases, 1-23-1 Toyama, Shinjuku-ku, Tokyo 162-8640, Japan
| | - Kyoko Sawabe
- Department of Medical Entomology, National Institute of Infectious Diseases, 1-23-1 Toyama, Shinjuku-ku, Tokyo 162-8640, Japan
| | - Haruhiko Isawa
- Department of Medical Entomology, National Institute of Infectious Diseases, 1-23-1 Toyama, Shinjuku-ku, Tokyo 162-8640, Japan.
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25
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Pimentel V, Afonso R, Nunes M, Vieira ML, Bravo-Barriga D, Frontera E, Martinez M, Pereira A, Maia C, Paiva-Cardoso MDN, Freitas FB, Abecasis AB, Parreira R. Geographic dispersal and genetic diversity of tick-borne phleboviruses (Phenuiviridae, Phlebovirus) as revealed by the analysis of L segment sequences. Ticks Tick Borne Dis 2019; 10:942-948. [PMID: 31078467 DOI: 10.1016/j.ttbdis.2019.05.001] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2018] [Revised: 04/30/2019] [Accepted: 05/02/2019] [Indexed: 11/27/2022]
Abstract
The large diversity of new tick-borne phleboviruses, and the negative impacts of the virulent viruses on human/animal health have led to a growing interest in their analysis. In this report, new insights are brought out into the diversity of putative phleboviruses circulating in Portugal (both the continental territory and the islands of São Miguel, in the Azores, and Madeira), as well as in the Spanish western regions of Extremadura and Castilla and León. Phlebovirus sequences were frequently detected (L-segment) from both questing and feeding ticks, but especially in Rhipicephalus sanguineus sensu lato (s.l.) specimens. These sequences were detected in adult ticks, as well as nymphs and eggs, supporting the hypothesis of viral maintenance by vertical transmission. Though multiple genetic groups could be identified in phylogenetic trees (AnLuc, KarMa, RiPar virus 1, and Spanish group 1 and 2), all the sequences from Portugal and Spain shared common ancestry with other viral sequence obtained from samples collected over a large geographic coverage. Spatiotemporal analysis placed Middle-East as the geographic origin of the most recent common ancestor (MRCA) of all phleboviruses analysed in the present study. More recent viral transitions might include migrations from Spain to continental Portugal, and from there to the Portuguese Islands. Our findings suggest that the time of the MRCA of phleboviruses was dated around 225 years ago [95% HPD: 124-387 year before the last sampling date].
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Affiliation(s)
- Victor Pimentel
- Unidade de Saúde Pública Internacional e Bioestatística, Instituto de Higiene e Medicina Tropical (IHTM)/Universidade Nova de Lisboa (UNL), and Global Health and Tropical Medicine (GHTM) research center, Lisboa, Portugal
| | - Rita Afonso
- Unidade de Microbiologia Médica, (IHMT/UNL, and GHTM), Oeiras, Portugal
| | - Mónica Nunes
- iBET, Instituto de Biologia Experimental e Tecnológica, Oeiras, Portugal
| | | | - Daniel Bravo-Barriga
- Parasitology and Parasitic Diseases, Animal Health Department, Veterinary Faculty, University of Extremadura, Cáceres, Spain
| | - Eva Frontera
- Parasitology and Parasitic Diseases, Animal Health Department, Veterinary Faculty, University of Extremadura, Cáceres, Spain
| | - Manuel Martinez
- Parasitology and Parasitic Diseases, Animal Health Department, Veterinary Faculty, University of Extremadura, Cáceres, Spain
| | - André Pereira
- Unidade de Parasitologia Médica (IHMT/UNL, and GHTM), Lisboa, Portugal
| | - Carla Maia
- Unidade de Parasitologia Médica (IHMT/UNL, and GHTM), Lisboa, Portugal
| | - Maria das Neves Paiva-Cardoso
- Departmento de Ciências Veterinárias, Universidade de Trás-os-Montes e Alto Douro (UTAD) and Centro de Investigação e Tecnologias Agroambientais e Biológicas (CITAB), Vila Real, Portugal
| | | | - Ana B Abecasis
- Unidade de Saúde Pública Internacional e Bioestatística, Instituto de Higiene e Medicina Tropical (IHTM)/Universidade Nova de Lisboa (UNL), and Global Health and Tropical Medicine (GHTM) research center, Lisboa, Portugal
| | - Ricardo Parreira
- Unidade de Microbiologia Médica, (IHMT/UNL, and GHTM), Oeiras, Portugal.
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26
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Cicculli V, de Lamballerie X, Charrel R, Falchi A. First molecular detection of Rickettsia africae in a tropical bont tick, Amblyomma variegatum, collected in Corsica, France. EXPERIMENTAL & APPLIED ACAROLOGY 2019; 77:207-214. [PMID: 30656468 DOI: 10.1007/s10493-018-00336-2] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/13/2018] [Accepted: 12/28/2018] [Indexed: 06/09/2023]
Abstract
Here we report the first detection of Amblyomma variegatum, a tick species of medical and veterinary importance, and the first molecular evidence of a pathogen, Rickettsia africae, both new to Corsica (France). In August 2018, an ixodid tick with an unusual morphology was removed from the ventral part of a cow's whole skin in a slaughterhouse located in the village of Ponte-Leccia (Haute-Corse). The tick was morphologically identified as an adult male of A. variegatum. This result was confirmed by 16S rDNA sequence analysis with a close relative being a sequence from Senegal showing 99% nucleotide identity. We tested the tick for Ehrlichia and Rickettsia. The tick was positive to Rickettsia and the corresponding sequence matched with R. africae. There is little or no risk of the introduction and establishment of a viable population of A. variegatum in Corsica by migrating birds. However, if it did, it could produce major economic losses for livestock production. Further studies and sustained surveillance are indicated, not only focusing on this species of tick and this rickettsia, but also on other microorganisms of veterinary and medical importance that might be transmitted in Corsica and other Mediterranean islands.
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Affiliation(s)
- Vincent Cicculli
- EA7310 BIOSCOPE, Laboratoire de Virologie, Université de Corse-Inserm, 20250, Corte, France
| | - Xavier de Lamballerie
- Unité des Virus Emergents (UVE), IHU Méditerranée Infection, Aix-Marseille Université, IRD 190, INSERM 1207, Marseille, France
| | - Remi Charrel
- Unité des Virus Emergents (UVE), IHU Méditerranée Infection, Aix-Marseille Université, IRD 190, INSERM 1207, Marseille, France
| | - Alessandra Falchi
- EA7310 BIOSCOPE, Laboratoire de Virologie, Université de Corse-Inserm, 20250, Corte, France.
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27
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Brinkmann A, Dinçer E, Polat C, Hekimoğlu O, Hacıoğlu S, Földes K, Özkul A, Öktem İMA, Nitsche A, Ergünay K. A metagenomic survey identifies Tamdy orthonairovirus as well as divergent phlebo-, rhabdo-, chu- and flavi-like viruses in Anatolia, Turkey. Ticks Tick Borne Dis 2018; 9:1173-1183. [PMID: 29728337 DOI: 10.1016/j.ttbdis.2018.04.017] [Citation(s) in RCA: 42] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2018] [Revised: 04/23/2018] [Accepted: 04/23/2018] [Indexed: 11/29/2022]
Abstract
We employed a direct metagenomic approach via next-generation sequencing for a cross-sectional investigation of viruses in 10 tick pools, collected from Aegean, Mediterranean and central Anatolian locations in Turkey. Sequences from all genome segments of Tamdy orthonairovirus (family Nairoviridae) were characterized in ticks collected from a Meriones tristrami. We further obtained near-complete L and partial S segments of several tick-associated phleboviruses (family Phenuiviridae), including Tacheng tick virus 2 and a novel virus, tentatively named as the tick phlebovirus Anatolia. Partial NS5-coding region of recently-described flavi-like virus (Tacheng tick virus 8) was further detected. Moreover, near-complete and polymerase-coding regions of arthropod-associated rhabdoviruses as well as sequences closely-related to the members of the newly-proposed virus family, the Chuviridae, were characterized. Despite origins of the viral sequences could not be fully elucidated, the findings suggest the circulation of diverse arthropod and tick-associated viruses in Anatolia. Occurrence and outcome of vertebrate exposure and probable health impact of these viruses require further investigation. We also report the initial detection of Tamdy orthonairovirus, an established human pathogen, which should be included in the diagnostic workup of infections with unknown etiology.
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Affiliation(s)
- Annika Brinkmann
- Robert Koch Institute, Center for Biological Threats and Special Pathogens 1 (ZBS-1), 13353, Berlin, Germany
| | - Ender Dinçer
- Mersin University, Advanced Technology Education, Research and Application Center, 33110, Mersin, Turkey
| | - Ceylan Polat
- Dokuz Eylul University, Faculty of Medicine, Department of Medical Microbiology, 35340, Izmir, Turkey
| | - Olcay Hekimoğlu
- Hacettepe University, Faculty of Science, Department of Biology, Division of Ecology, 06800, Ankara, Turkey
| | - Sabri Hacıoğlu
- Ankara University, Faculty of Veterinary Medicine, Department of Virology, 06110, Ankara, Turkey
| | - Katalin Földes
- Ankara University, Faculty of Veterinary Medicine, Department of Virology, 06110, Ankara, Turkey
| | - Aykut Özkul
- Ankara University, Faculty of Veterinary Medicine, Department of Virology, 06110, Ankara, Turkey
| | - İbrahim Mehmet Ali Öktem
- Dokuz Eylul University, Faculty of Medicine, Department of Medical Microbiology, 35340, Izmir, Turkey
| | - Andreas Nitsche
- Robert Koch Institute, Center for Biological Threats and Special Pathogens 1 (ZBS-1), 13353, Berlin, Germany
| | - Koray Ergünay
- Robert Koch Institute, Center for Biological Threats and Special Pathogens 1 (ZBS-1), 13353, Berlin, Germany; Hacettepe University, Faculty of Medicine, Department of Medical Microbiology, Virology Unit, 06100, Ankara, Turkey.
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28
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Dinçer E, Brinkmann A, Hekimoğlu O, Hacıoğlu S, Földes K, Karapınar Z, Polat PF, Oğuz B, Orunç Kılınç Ö, Hagedorn P, Özer N, Özkul A, Nitsche A, Ergünay K. Generic amplification and next generation sequencing reveal Crimean-Congo hemorrhagic fever virus AP92-like strain and distinct tick phleboviruses in Anatolia, Turkey. Parasit Vectors 2017; 10:335. [PMID: 28705183 PMCID: PMC5513282 DOI: 10.1186/s13071-017-2279-1] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2017] [Accepted: 07/06/2017] [Indexed: 01/31/2023] Open
Abstract
Background Ticks are involved with the transmission of several viruses with significant health impact. As incidences of tick-borne viral infections are rising, several novel and divergent tick- associated viruses have recently been documented to exist and circulate worldwide. This study was performed as a cross-sectional screening for all major tick-borne viruses in several regions in Turkey. Next generation sequencing (NGS) was employed for virus genome characterization. Ticks were collected at 43 locations in 14 provinces across the Aegean, Thrace, Mediterranean, Black Sea, central, southern and eastern regions of Anatolia during 2014–2016. Following morphological identification, ticks were pooled and analysed via generic nucleic acid amplification of the viruses belonging to the genera Flavivirus, Nairovirus and Phlebovirus of the families Flaviviridae and Bunyaviridae, followed by sequencing and NGS in selected specimens. Results A total of 814 specimens, comprising 13 tick species, were collected and evaluated in 187 pools. Nairovirus and phlebovirus assays were positive in 6 (3.2%) and 48 (25.6%) pools. All nairovirus sequences were closely-related to the Crimean-Congo hemorrhagic fever virus (CCHFV) strain AP92 and formed a phylogenetically distinct cluster among related strains. Major portions of the CCHFV genomic segments were obtained via NGS. Phlebovirus sequencing revealed several tick-associated virus clades, including previously-characterized Antigone, Lesvos, KarMa and Bole tick viruses, as well as a novel clade. A wider host range for tick-associated virus strains has been observed. NGS provided near-complete sequences of the L genomic segments of Antigone and KarMa clades, as well as Antigone partial S segment. Co- infections of CCHFV and KarMa or novel phlebovirus clades were detected in 2.1% of the specimens. Conclusions Widespread circulation of various tick-associated phlebovirus clades were documented for the first time in Anatolia. Genomes of CCHFV AP92 strains were identified in previously unexplored locations. NGS provided the most detailed genomic characterization of the Antigone and KarMa viruses to date. The epidemiological and health-related consequences must be elucidated. Electronic supplementary material The online version of this article (doi:10.1186/s13071-017-2279-1) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Ender Dinçer
- Mersin University, Advanced Technology Education, Research and Application Center, 33110, Mersin, Turkey
| | - Annika Brinkmann
- Robert Koch Institute; Center for Biological Threats and Special Pathogens 1 (ZBS-1), 13353, Berlin, Germany
| | - Olcay Hekimoğlu
- Faculty of Science, Department of Biology, Division of Ecology, Hacettepe University, 06800, Ankara, Turkey
| | - Sabri Hacıoğlu
- Faculty of Veterinary Medicine, Department of Virology, Ankara University, 06110, Ankara, Turkey
| | - Katalin Földes
- Faculty of Veterinary Medicine, Department of Virology, Ankara University, 06110, Ankara, Turkey
| | - Zeynep Karapınar
- Faculty of Veterinary Medicine, Department of Virology, Yuzuncu Yil University, 65080, Van, Turkey
| | - Pelin Fatoş Polat
- Faculty of Veterinary Medicine, Department of Internal Medicine, Harran University, 63200,, Sanlıurfa, Turkey
| | - Bekir Oğuz
- Faculty of Veterinary Medicine, Department of Virology, Yuzuncu Yil University, 65080, Van, Turkey
| | | | - Peter Hagedorn
- Robert Koch Institute; Center for Biological Threats and Special Pathogens 1 (ZBS-1), 13353, Berlin, Germany
| | - Nurdan Özer
- Faculty of Science, Department of Biology, Division of Ecology, Hacettepe University, 06800, Ankara, Turkey
| | - Aykut Özkul
- Faculty of Veterinary Medicine, Department of Virology, Ankara University, 06110, Ankara, Turkey
| | - Andreas Nitsche
- Robert Koch Institute; Center for Biological Threats and Special Pathogens 1 (ZBS-1), 13353, Berlin, Germany
| | - Koray Ergünay
- Robert Koch Institute; Center for Biological Threats and Special Pathogens 1 (ZBS-1), 13353, Berlin, Germany. .,Faculty of Medicine, Department of Medical Microbiology, Virology Unit, Hacettepe University, 06100, Ankara, Turkey.
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