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Siegers JY, Wille M, Yann S, Tok S, Sin S, Chea S, Porco A, Sours S, Chim V, Chea S, Chhel K, Tum S, Sorn S, Hak M, Thielen P, Dhanasekaran V, Karlsson EA. Detection and phylogenetic analysis of contemporary H14N2 Avian influenza A virus in domestic ducks in Southeast Asia (Cambodia). Emerg Microbes Infect 2024; 13:2297552. [PMID: 38112157 PMCID: PMC11025406 DOI: 10.1080/22221751.2023.2297552] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2023] [Accepted: 12/17/2023] [Indexed: 12/20/2023]
Abstract
Avian influenza virus (AIV) in Asia is a complex system with numerous subtypes and a highly porous wild birds-poultry interface. Certain AIV subtypes, such as H14, are underrepresented in current surveillance efforts, leaving gaps in our understanding of their ecology and evolution. The detection of rare subtype H14 in domestic ducks in Southeast Asia comprises a geographic region and domestic bird population previously unassociated with this subtype. These H14 viruses have a complex evolutionary history involving gene reassortment events. They share sequence similarity to AIVs endemic in Cambodian ducks, and Eurasian low pathogenicity and high pathogenicity H5Nx AIVs. The detection of these H14 viruses in Southeast Asian domestic poultry further advances our knowledge of the ecology and evolution of this subtype and reinforces the need for continued, longitudinal, active surveillance in domestic and wild birds. Additionally, in vivo and in vitro risk assessment should encompass rare AIV subtypes, as they have the potential to establish in poultry systems.
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Affiliation(s)
- Jurre Y. Siegers
- Virology Unit, Institute Pasteur du Cambodge, Phnom Penh, Cambodia
| | - Michelle Wille
- Centre for Pathogen Genomics, Department of Microbiology and Immunology, University of Melbourne, at the Peter Doherty Institute for Infection and Immunity, Melbourne, Australia
- WHO Collaborating Centre for Reference and Research on Influenza, at the Peter Doherty Institute for Infection and Immunity, Melbourne, Australia
| | - Sokhoun Yann
- Virology Unit, Institute Pasteur du Cambodge, Phnom Penh, Cambodia
| | - Songha Tok
- Virology Unit, Institute Pasteur du Cambodge, Phnom Penh, Cambodia
| | - Sarath Sin
- Virology Unit, Institute Pasteur du Cambodge, Phnom Penh, Cambodia
| | - Sokha Chea
- Wildlife Conservation Society, Phnom Penh, Cambodia
| | - Alice Porco
- Wildlife Conservation Society, Phnom Penh, Cambodia
| | - Sreyem Sours
- Wildlife Conservation Society, Phnom Penh, Cambodia
| | - Vutha Chim
- National Animal Health and Production Research Institute, Phnom Penh, Cambodia
| | - Samban Chea
- Virology Unit, Institute Pasteur du Cambodge, Phnom Penh, Cambodia
| | - Kimtuo Chhel
- Virology Unit, Institute Pasteur du Cambodge, Phnom Penh, Cambodia
| | - Sothyra Tum
- National Animal Health and Production Research Institute, Phnom Penh, Cambodia
| | - San Sorn
- National Animal Health and Production Research Institute, Phnom Penh, Cambodia
| | - Makara Hak
- Food and Agriculture Organization of the United Nations Country Office, Phnom Penh, Cambodia
| | - Peter Thielen
- Johns Hopkins University Applied Physics Laboratory, Laurel, MD, USA
| | - Vijaykrishna Dhanasekaran
- School of Public Health, LKS Faculty of Medicine, The University of Hong Kong, Hong Kong, People’s Republic of China
- HKU-Pasteur Research Pole, School of Public Health, LKS Faculty of Medicine, The University of Hong Kong, Hong Kong, People’s Republic of China
| | - Erik A. Karlsson
- Virology Unit, Institute Pasteur du Cambodge, Phnom Penh, Cambodia
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2
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Trosan P, Tang JSJ, Rosencrantz RR, Daehne L, Smaczniak AD, Staehlke S, Chea S, Fuchsluger TA. The Biocompatibility Analysis of Artificial Mucin-Like Glycopolymers. Int J Mol Sci 2023; 24:14150. [PMID: 37762451 PMCID: PMC10532372 DOI: 10.3390/ijms241814150] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2023] [Revised: 09/05/2023] [Accepted: 09/08/2023] [Indexed: 09/29/2023] Open
Abstract
The ocular surface is covered by a tear film consisting of an aqueous/mucin phase and a superficial lipid layer. Mucins, highly O-glycosylated proteins, are responsible for lubrication and ocular surface protection. Due to contact lens wear or eye disorders, lubrication of the ocular surface can be affected. Artificial glycopolymers which mimic natural mucins could be efficient in ophthalmic therapy. Various neutral, positively, and negatively charged mucin-mimicking glycopolymers were synthesized (n = 11), cultured in different concentrations (1%, 0.1%, and 0.01% w/v) with human corneal epithelial cells (HCE), and analyzed by various cytotoxicity/viability, morphology, and immunohistochemistry (IHC) assays. Six of the eleven glycopolymers were selected for further analysis after cytotoxicity/viability assays. We showed that the six selected glycopolymers had no cytotoxic effect on HCE cells in the 0.01% w/v concentration. They did not negatively affect cell viability and displayed both morphology and characteristic markers as untreated control cells. These polymers could be used in the future as mucin-mimicking semi-synthetic materials for lubrication and protection of the ocular surface.
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Affiliation(s)
- P. Trosan
- Department of Ophthalmology, University Medical Center Rostock, 18057 Rostock, Germany
| | - J. S. J. Tang
- Biofunctionalized Materials and (Glyco) Biotechnology, Fraunhofer Institute for Applied Polymer Research IAP, 14476 Potsdam, Germany
| | - R. R. Rosencrantz
- Biofunctionalized Materials and (Glyco) Biotechnology, Fraunhofer Institute for Applied Polymer Research IAP, 14476 Potsdam, Germany
- Institute of Materials Chemistry, Chair of Biofunctional Polymer Materials, Brandenburg University of Technology BTU, 01968 Senftenberg, Germany
| | - L. Daehne
- Surflay Nanotec GmbH, 12489 Berlin, Germany
| | | | - S. Staehlke
- Department of Ophthalmology, University Medical Center Rostock, 18057 Rostock, Germany
| | - S. Chea
- Biofunctionalized Materials and (Glyco) Biotechnology, Fraunhofer Institute for Applied Polymer Research IAP, 14476 Potsdam, Germany
| | - T. A. Fuchsluger
- Department of Ophthalmology, University Medical Center Rostock, 18057 Rostock, Germany
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3
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Porco A, Chea S, Sours S, Nou V, Groenenberg M, Agger C, Tum S, Chhuon V, Sorn S, Hong C, Davis B, Davis S, Ken S, Olson SH, Fine AE. Case report: Lumpy skin disease in an endangered wild banteng ( Bos javanicus) and initiation of a vaccination campaign in domestic livestock in Cambodia. Front Vet Sci 2023; 10:1228505. [PMID: 37601751 PMCID: PMC10434565 DOI: 10.3389/fvets.2023.1228505] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2023] [Accepted: 07/03/2023] [Indexed: 08/22/2023] Open
Abstract
We describe a case of lumpy skin disease in an endangered banteng in Cambodia and the subsequent initiation of a vaccination campaign in domestic cattle to protect wild bovids from disease transmission at the wildlife-livestock interface. Lumpy skin disease virus (LSDV) was first detected in domestic cattle in Cambodia in June of 2021 and rapidly spread throughout the country. In September 2021, a banteng was seen in Phnom Tnout Phnom Pok wildlife sanctuary with signs of lumpy skin disease. Scab samples were collected and tested positive for LSDV. Monitoring using line transect surveys and camera traps in protected areas with critical banteng and gaur populations was initiated from December 2021-October 2022. A collaborative multisector vaccination campaign to vaccinate domestic livestock in and around priority protected areas with banteng and gaur was launched July 2022 and a total of 20,089 domestic cattle and water buffalo were vaccinated with LumpyvaxTM. No signs of LSDV in banteng or gaur in Cambodia have been observed since this initial case. This report documents the first case of lumpy skin disease in wildlife in Cambodia and proposes a potential intervention to mitigate the challenge of pathogen transmission at the domestic-wildlife interface. While vaccination can support local livestock-based economies and promote biodiversity conservation, it is only a component of an integrated solution and One Health approach to protect endangered species from threats at the wildlife-livestock interface.
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Affiliation(s)
- Alice Porco
- Wildlife Conservation Society, Cambodia Program, Phnom Penh, Cambodia
| | - Sokha Chea
- Wildlife Conservation Society, Cambodia Program, Phnom Penh, Cambodia
| | - Sreyem Sours
- Wildlife Conservation Society, Cambodia Program, Phnom Penh, Cambodia
| | - Vonika Nou
- General Directorate of Animal Health and Production, Phnom Penh, Cambodia
| | | | - Cain Agger
- Wildlife Conservation Society, Cambodia Program, Phnom Penh, Cambodia
| | - Sothyra Tum
- National Animal Health and Production Research Institute, Phnom Penh, Cambodia
| | | | - San Sorn
- General Directorate of Animal Health and Production, Phnom Penh, Cambodia
| | - Chamnan Hong
- Department of Freshwater Wetlands Conservation, Phnom Penh, Cambodia
| | - Ben Davis
- Our Future Organization, Preah Vihear, Cambodia
| | | | - Sereyrotha Ken
- Wildlife Conservation Society, Cambodia Program, Phnom Penh, Cambodia
| | - Sarah H. Olson
- Wildlife Conservation Society, Health Program, New York, NY, United States
| | - Amanda E. Fine
- Wildlife Conservation Society, Health Program, New York, NY, United States
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4
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Pruvot M, Denstedt E, Latinne A, Porco A, Montecino-Latorre D, Khammavong K, Milavong P, Phouangsouvanh S, Sisavanh M, Nga NTT, Ngoc PTB, Thanh VD, Chea S, Sours S, Phommachanh P, Theppangna W, Phiphakhavong S, Vanna C, Masphal K, Sothyra T, San S, Chamnan H, Long PT, Diep NT, Duoc VT, Zimmer P, Brown K, Olson SH, Fine AE. WildHealthNet: Supporting the development of sustainable wildlife health surveillance networks in Southeast Asia. Sci Total Environ 2023; 863:160748. [PMID: 36513230 DOI: 10.1016/j.scitotenv.2022.160748] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/17/2022] [Revised: 11/29/2022] [Accepted: 12/03/2022] [Indexed: 06/17/2023]
Abstract
Wildlife and wildlife interfaces with people and livestock are essential surveillance targets to monitor emergent or endemic pathogens or new threats affecting wildlife, livestock, and human health. However, limitations of previous investments in scope and duration have resulted in a neglect of wildlife health surveillance (WHS) systems at national and global scales, particularly in lower and middle income countries (LMICs). Building on decades of wildlife health activities in LMICs, we demonstrate the implementation of a locally-driven multi-pronged One Health approach to establishing WHS in Cambodia, Lao PDR and Viet Nam under the WildHealthNet initiative. WildHealthNet utilizes existing local capacity in the animal, public health, and environmental sectors for event based or targeted surveillance and disease detection. To scale up surveillance systems to the national level, WildHealthNet relies on iterative field implementation and policy development, capacity bridging, improving data collection and management systems, and implementing context specific responses to wildlife health intelligence. National WHS systems piloted in Cambodia, Lao PDR, and Viet Nam engaged protected area rangers, wildlife rescue centers, community members, and livestock and human health sector staff and laboratories. Surveillance activities detected outbreaks of H5N1 highly pathogenic avian influenza in wild birds, African swine fever in wild boar (Sus scrofa), Lumpy skin disease in banteng (Bos javanicus), and other endemic zoonotic pathogens identified as surveillance priorities by local stakeholders. In Cambodia and Lao PDR, national plans for wildlife disease surveillance are being signed into legislation. Cross-sectoral and trans-disciplinary approaches are needed to implement effective WHS systems. Long-term commitment, and paralleled implementation and policy development are key to sustainable WHS networks. WildHealthNet offers a roadmap to aid in the development of locally-relevant and locally-led WHS systems that support the global objectives of the World Organization for Animal Health's Wildlife Health Framework and other international agendas.
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Affiliation(s)
- Mathieu Pruvot
- Wildlife Conservation Society, Health Program, Bronx, NY, USA; University of Calgary, Faculty of Veterinary Medicine, Calgary, AB, Canada.
| | - Emily Denstedt
- Wildlife Conservation Society, Lao PDR Country Program, Vientiane, Laos
| | - Alice Latinne
- Wildlife Conservation Society, Viet Nam Country Program, Hanoi, Viet Nam
| | - Alice Porco
- Wildlife Conservation Society, Cambodia Country Program, Phnom Penh, Cambodia
| | | | - Kongsy Khammavong
- Wildlife Conservation Society, Lao PDR Country Program, Vientiane, Laos
| | | | | | - Manoly Sisavanh
- Wildlife Conservation Society, Lao PDR Country Program, Vientiane, Laos
| | | | - Pham Thi Bich Ngoc
- Wildlife Conservation Society, Viet Nam Country Program, Hanoi, Viet Nam
| | - Vo Duy Thanh
- Wildlife Conservation Society, Viet Nam Country Program, Hanoi, Viet Nam
| | - Sokha Chea
- Wildlife Conservation Society, Cambodia Country Program, Phnom Penh, Cambodia
| | - Sreyem Sours
- Wildlife Conservation Society, Cambodia Country Program, Phnom Penh, Cambodia
| | - Phouvong Phommachanh
- National Animal Health Laboratory, Department of Livestock and Fisheries, Vientiane, Laos
| | - Watthana Theppangna
- National Animal Health Laboratory, Department of Livestock and Fisheries, Vientiane, Laos
| | - Sithong Phiphakhavong
- National Animal Health Laboratory, Department of Livestock and Fisheries, Vientiane, Laos
| | - Chhuon Vanna
- Department of Wildlife and Biodiversity, Forestry Administration, Phnom Penh, Cambodia
| | - Kry Masphal
- Department of Wildlife and Biodiversity, Forestry Administration, Phnom Penh, Cambodia
| | - Tum Sothyra
- National Animal Health and Production Research Institute, Phnom Penh, Cambodia
| | - Sorn San
- General Directorate of Animal Health and Production, Phnom Penh, Cambodia
| | - Hong Chamnan
- General Directorate of Natural Protected Areas, Phnom Penh, Cambodia
| | - Pham Thanh Long
- Department of Animal Health, Ministry of Agriculture and Rural Development, Hanoi, Viet Nam
| | - Nguyen Thi Diep
- Department of Animal Health, Ministry of Agriculture and Rural Development, Hanoi, Viet Nam
| | - Vu Trong Duoc
- National Institute of Hygiene and Epidemiology, Hanoi, Viet Nam
| | - Patrick Zimmer
- Canadian Wildlife Health Cooperative, Saskatoon, SK, Canada
| | - Kevin Brown
- Canadian Wildlife Health Cooperative, Saskatoon, SK, Canada
| | - Sarah H Olson
- Wildlife Conservation Society, Health Program, Bronx, NY, USA
| | - Amanda E Fine
- Wildlife Conservation Society, Health Program, Bronx, NY, USA
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5
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Delaune D, Hul V, Karlsson EA, Hassanin A, Ou TP, Baidaliuk A, Gámbaro F, Prot M, Tu VT, Chea S, Keatts L, Mazet J, Johnson CK, Buchy P, Dussart P, Goldstein T, Simon-Lorière E, Duong V. A novel SARS-CoV-2 related coronavirus in bats from Cambodia. Nat Commun 2021; 12:6563. [PMID: 34753934 DOI: 10.1101/2021.01.26.428212] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2021] [Accepted: 10/14/2021] [Indexed: 05/21/2023] Open
Abstract
Knowledge of the origin and reservoir of the coronavirus responsible for the ongoing COVID-19 pandemic is still fragmentary. To date, the closest relatives to SARS-CoV-2 have been detected in Rhinolophus bats sampled in the Yunnan province, China. Here we describe the identification of SARS-CoV-2 related coronaviruses in two Rhinolophus shameli bats sampled in Cambodia in 2010. Metagenomic sequencing identifies nearly identical viruses sharing 92.6% nucleotide identity with SARS-CoV-2. Most genomic regions are closely related to SARS-CoV-2, with the exception of a region of the spike, which is not compatible with human ACE2-mediated entry. The discovery of these viruses in a bat species not found in China indicates that SARS-CoV-2 related viruses have a much wider geographic distribution than previously reported, and suggests that Southeast Asia represents a key area to consider for future surveillance for coronaviruses.
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Affiliation(s)
- Deborah Delaune
- Evolutionary Genomics of RNA Viruses, Department of Virology, Institut Pasteur, Paris, France
- Institut de Recherche Biomédicale des Armées, Brétigny-sur-Orge, France
- Université Paris-Saclay, Orsay, France
| | - Vibol Hul
- Virology Unit, Institut Pasteur du Cambodge, Institut Pasteur International Network, Phnom Penh, Cambodia
- UVE: Aix-Marseille Univ-IRD 190-Inserm, 1207, Marseille, France
| | - Erik A Karlsson
- Virology Unit, Institut Pasteur du Cambodge, Institut Pasteur International Network, Phnom Penh, Cambodia
| | - Alexandre Hassanin
- Institut de Systématique, Évolution, Biodiversité, Sorbonne Université, MNHN, CNRS, EPHE, UA, Paris, France
| | - Tey Putita Ou
- Virology Unit, Institut Pasteur du Cambodge, Institut Pasteur International Network, Phnom Penh, Cambodia
| | - Artem Baidaliuk
- Evolutionary Genomics of RNA Viruses, Department of Virology, Institut Pasteur, Paris, France
| | - Fabiana Gámbaro
- Evolutionary Genomics of RNA Viruses, Department of Virology, Institut Pasteur, Paris, France
- Université de Paris, Sorbonne Paris Cité, Paris, France
| | - Matthieu Prot
- Evolutionary Genomics of RNA Viruses, Department of Virology, Institut Pasteur, Paris, France
| | - Vuong Tan Tu
- Institut de Systématique, Évolution, Biodiversité, Sorbonne Université, MNHN, CNRS, EPHE, UA, Paris, France
- Institute of Ecology and Biological Resources, Vietnam Academy of Science and Technology, Hanoi, Vietnam
| | - Sokha Chea
- Wildlife Conservation Society, Cambodia Program, Phnom Penh, Cambodia
| | - Lucy Keatts
- Wildlife Conservation Society, Health Program, Bronx, NY, USA
- One Health Institute, School of Veterinary Medicine, University of California, Davis, USA
| | - Jonna Mazet
- One Health Institute, School of Veterinary Medicine, University of California, Davis, USA
| | - Christine K Johnson
- One Health Institute, School of Veterinary Medicine, University of California, Davis, USA
| | - Philippe Buchy
- Virology Unit, Institut Pasteur du Cambodge, Institut Pasteur International Network, Phnom Penh, Cambodia
- GlaxoSmithKline Vaccines R&D Greater China & Intercontinental, Singapore, Singapore
| | - Philippe Dussart
- Virology Unit, Institut Pasteur du Cambodge, Institut Pasteur International Network, Phnom Penh, Cambodia
- Virology Unit, Institut Pasteur de Madagascar, Institut Pasteur International Network, Antananarivo, Madagascar
| | - Tracey Goldstein
- One Health Institute, School of Veterinary Medicine, University of California, Davis, USA
| | - Etienne Simon-Lorière
- Evolutionary Genomics of RNA Viruses, Department of Virology, Institut Pasteur, Paris, France.
| | - Veasna Duong
- Virology Unit, Institut Pasteur du Cambodge, Institut Pasteur International Network, Phnom Penh, Cambodia.
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6
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Denstedt E, Porco A, Hwang J, Nga NTT, Ngoc PTB, Chea S, Khammavong K, Milavong P, Sours S, Osbjer K, Tum S, Douangngeun B, Theppanya W, Van Long N, Thanh Phuong N, Tin Vinh Quang L, Van Hung V, Hoa NT, Le Anh D, Fine A, Pruvot M. Detection of African swine fever virus in free-ranging wild boar in Southeast Asia. Transbound Emerg Dis 2021; 68:2669-2675. [PMID: 33351995 PMCID: PMC8518571 DOI: 10.1111/tbed.13964] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2020] [Revised: 12/06/2020] [Accepted: 12/18/2020] [Indexed: 12/01/2022]
Abstract
African Swine Fever (ASF) is a highly contagious and fatal viral disease affecting both domestic and wild suids. The virus was introduced to Southeast Asia in early 2019 and has since spread rapidly throughout the region. Although significant efforts have been made to track and diagnose the disease in domestic pigs, very little is known about ASF in free-ranging wild boar and their potential role in maintaining the disease within Southeast Asia. Through a collaboration between government and non-government actors in Laos, Viet Nam, and Cambodia, investigations were conducted to (a) characterize the interface between domestic pigs and wild boar, (b) document risk factors for likely ASF spillover into wild boar populations by way of this interface, and (c) determine whether ASF in wild boar could be detected in each country. An extensive overlap between wild boar habitat and domestic pig ranging areas was found around villages bordering forests in all three countries, creating a high-risk interface for viral spillover between domestic pig and wild boar populations. Fifteen and three wild boar carcasses were detected through passive reporting in Laos and Viet Nam, respectively, in 2019 and early 2020. Four of five carcasses screened in Laos and two of three in Viet Nam were confirmed positive for African swine fever virus using real-time PCR. There were no confirmed reports of wild boar carcasses in Cambodia. This is the first confirmation of ASF in wild boar in Southeast Asia, the result of a probable viral spillover from domestic pigs, which highlights the importance of early reporting and monitoring of ASF in wild boar to enable the implementation of appropriate biosecurity measures.
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Affiliation(s)
- Emily Denstedt
- Wildlife Conservation SocietyLao PDR Country ProgramVientianeLaos
- Wildlife Conservation SocietyHealth ProgramBronxNYUSA
| | - Alice Porco
- Wildlife Conservation SocietyHealth ProgramBronxNYUSA
- Wildlife Conservation SocietyCambodia Country ProgramPhnom PenhCambodia
| | - Jusun Hwang
- Wildlife Conservation SocietyHealth ProgramBronxNYUSA
- Wildlife Conservation SocietyViet Nam Country ProgramHanoiViet Nam
- Biosafety Research TeamEnvironmental Health Research DepartmentNational Institute of Environmental ResearchIncheonSouth Korea
| | | | | | - Sokha Chea
- Wildlife Conservation SocietyCambodia Country ProgramPhnom PenhCambodia
| | | | | | - Sreyem Sours
- Wildlife Conservation SocietyCambodia Country ProgramPhnom PenhCambodia
| | - Kristina Osbjer
- Emergency Center for Transboundary Animal DiseasesFood and Agriculture Organization of the United NationsPhnom PenhCambodia
- Department of Clinical SciencesSwedish University of Agricultural SciencesUppsalaSweden
| | - Sothyra Tum
- Cambodian National Animal Health and Production Research InstitutePhnom PenhCambodia
| | - Bounlom Douangngeun
- Department of Livestock and FisheriesNational Animal Health LaboratoryVientianeLaos
| | - Watthana Theppanya
- Department of Livestock and FisheriesNational Animal Health LaboratoryVientianeLaos
| | - Nguyen Van Long
- Department of Animal HealthMinistry of Agricultural and Rural Development of Viet NamHanoiViet Nam
| | | | | | - Vo Van Hung
- Regional Animal Health Office No. 6Ho Chi Minh CityViet Nam
| | - Nguyen Thi Hoa
- Viet Nam National University of AgricultureHanoiViet Nam
| | - Dao Le Anh
- Viet Nam National University of AgricultureHanoiViet Nam
| | - Amanda Fine
- Wildlife Conservation SocietyHealth ProgramBronxNYUSA
- Wildlife Conservation SocietyViet Nam Country ProgramHanoiViet Nam
| | - Mathieu Pruvot
- Wildlife Conservation SocietyHealth ProgramBronxNYUSA
- Faculty of Veterinary MedicineUniversity of CalgaryCalgaryAlbertaCanada
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7
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Lacroix A, Duong V, Hul V, San S, Davun H, Omaliss K, Chea S, Hassanin A, Theppangna W, Silithammavong S, Khammavong K, Singhalath S, Afelt A, Greatorex Z, Fine AE, Goldstein T, Olson S, Joly DO, Keatts L, Dussart P, Frutos R, Buchy P. Diversity of bat astroviruses in Lao PDR and Cambodia. Infect Genet Evol 2016; 47:41-50. [PMID: 27871796 PMCID: PMC7106329 DOI: 10.1016/j.meegid.2016.11.013] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/21/2016] [Revised: 11/12/2016] [Accepted: 11/14/2016] [Indexed: 12/24/2022]
Abstract
Astroviruses are known to infect humans and a wide range of animal species, and can cause gastroenteritis in their hosts. Recent studies have reported astroviruses in bats in Europe and in several locations in China. We sampled 1876 bats from 17 genera at 45 sites from 14 and 13 provinces in Cambodia and Lao PDR respectively, and tested them for astroviruses. Our study revealed a high diversity of astroviruses among various Yangochiroptera and Yinpterochiroptera bats. Evidence for varying degrees of host restriction for astroviruses in bats was found. Furthermore, additional Pteropodid hosts were detected. The astroviruses formed distinct phylogenetic clusters within the genus Mamastrovirus, most closely related to other known bat astroviruses. The astrovirus sequences were found to be highly saturated indicating that phylogenetic relationships should be interpreted carefully. An astrovirus clustering in a group with other viruses from diverse hosts, including from ungulates and porcupines, was found in a Rousettus bat. These findings suggest that diverse astroviruses can be found in many species of mammals, including bats. Diverse astroviruses detected in bats in Lao PDR and Cambodia High polymorphism of astroviruses found in insectivorous and frugivorous bats High level of genome saturation and hypermutation potential evidenced in astrovirus Detection of additional astrovirus bat hosts, i.e. nectar bats from the genus Eonycteris Discovery of a new species of astrovirus in fruit bats (Rousettus sp.)
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Affiliation(s)
- Audrey Lacroix
- Institut Pasteur du Cambodge, Virology Unit, Phnom Penh, Cambodia
| | - Veasna Duong
- Institut Pasteur du Cambodge, Virology Unit, Phnom Penh, Cambodia
| | - Vibol Hul
- Institut Pasteur du Cambodge, Virology Unit, Phnom Penh, Cambodia
| | - Sorn San
- National Veterinary Research Institute, Department of Animal Health and Production, Ministry of Agriculture Forestry and Fisheries, Cambodia
| | - Holl Davun
- National Veterinary Research Institute, Department of Animal Health and Production, Ministry of Agriculture Forestry and Fisheries, Cambodia
| | - Keo Omaliss
- Forest Administration, Ministry of Agriculture Forestry and Fisheries, Cambodia
| | | | - Alexandre Hassanin
- Institut de Systématique, Evolution, Biodiversité (ISYEB), UMR 7205 MNHN CNRS UPMC, EPHE, Muséum national d'Histoire naturelle, Paris, France; Muséum national d'Histoire naturelle, Institut de Systématique, Evolution, Biodiversité (ISYEB), UMR 7205 MNHN CNRS UPMC, France
| | - Watthana Theppangna
- National Animal Health Laboratory, Ministry of Agriculture Forestry and Fisheries, Laos
| | | | | | | | - Aneta Afelt
- Institute of Physical Geography, Faculty of Geography and Regional Studies, University of Warsaw, Warsaw, Poland
| | | | - Amanda E Fine
- Wildlife Conservation Society, Wildlife Health Program, Bronx, N.Y., USA
| | - Tracey Goldstein
- One Health Institute, School of Veterinary Medicine, University of California, Davis, USA
| | - Sarah Olson
- Wildlife Conservation Society, Wildlife Health Program, Bronx, N.Y., USA
| | - Damien O Joly
- Wildlife Conservation Society, Wildlife Health Program, Bronx, N.Y., USA; Metabiota Inc., Nanaimo, British Columbia, Canada
| | | | - Philippe Dussart
- Institut Pasteur du Cambodge, Virology Unit, Phnom Penh, Cambodia
| | - Roger Frutos
- Cirad, UMR 17, Cirad-Ird, TA-A17/G, Montpellier, France; Université de Montpellier, IES, UMR 5214, CNRS-UM, Montpellier, France.
| | - Philippe Buchy
- Institut Pasteur du Cambodge, Virology Unit, Phnom Penh, Cambodia; GSK Vaccines R&D, 150 Beach road, # 22-00, 189720, Singapore.
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8
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Abstract
Advances in treating and preventing AIDS depend on understanding how human immunodeficiency virus (HIV) is eliminated in vivo and on the manipulation of effective immune responses to HIV. During the development of assays quantifying the elimination of fluorescent autologous cells coated with overlapping 15-mer simian immunodeficiency virus (SIV) or HIV-1 peptides, we made a remarkable observation: the reinfusion of macaque peripheral blood mononuclear cells, or even whole blood, pulsed with SIV and/or HIV peptides generated sharply enhanced SIV- and HIV-1-specific T-cell immunity. Strong, broad CD4+- and CD8+-T-cell responses could be enhanced simultaneously against peptide pools spanning 87% of all SIV- and HIV-1-expressed proteins-highly desirable characteristics of HIV-specific immunity. De novo hepatitis C virus-specific CD4+- and CD8+-T-cell responses were generated in macaques by the same method. This simple technique holds promise for the immunotherapy of HIV and other chronic viral infections.
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Affiliation(s)
- S. Chea
- Department of Microbiology and Immunology, University of Melbourne, Victoria, John Curtin School of Medical Research, Australian National University, Canberra, Australia
| | - C. J. Dale
- Department of Microbiology and Immunology, University of Melbourne, Victoria, John Curtin School of Medical Research, Australian National University, Canberra, Australia
| | - R. De Rose
- Department of Microbiology and Immunology, University of Melbourne, Victoria, John Curtin School of Medical Research, Australian National University, Canberra, Australia
| | - I. A. Ramshaw
- Department of Microbiology and Immunology, University of Melbourne, Victoria, John Curtin School of Medical Research, Australian National University, Canberra, Australia
| | - S. J. Kent
- Department of Microbiology and Immunology, University of Melbourne, Victoria, John Curtin School of Medical Research, Australian National University, Canberra, Australia
- Corresponding author. Mailing address: Department of Microbiology and Immunology, University of Melbourne, Victoria 3010, Australia. Phone: 61383449939. Fax: 61383443846. E-mail:
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Dale CJ, De Rose R, Stratov I, Chea S, Montefiori DC, Thomson S, Ramshaw IA, Coupar BEH, Boyle DB, Law M, Kent SJ. Efficacy of DNA and fowlpox virus priming/boosting vaccines for simian/human immunodeficiency virus. J Virol 2004; 78:13819-28. [PMID: 15564490 PMCID: PMC533907 DOI: 10.1128/jvi.78.24.13819-13828.2004] [Citation(s) in RCA: 65] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023] Open
Abstract
Further advances are required in understanding protection from AIDS by T-cell immunity. We analyzed a set of multigenic simian/human immunodeficiency virus (SHIV) DNA and fowlpox virus priming and boosting vaccines for immunogenicity and protective efficacy in outbred pigtail macaques. The number of vaccinations required, the effect of DNA vaccination alone, and the effect of cytokine (gamma interferon) coexpression by the fowlpox virus boost was also studied. A coordinated induction of high levels of broadly reactive CD4 and CD8 T-cell immune responses was induced by sequential DNA and fowlpox virus vaccination. The immunogenicity of regimens utilizing fowlpox virus coexpressing gamma interferon, a single DNA priming vaccination, or DNA vaccines alone was inferior. Significant control of a virulent SHIV challenge was observed despite a loss of SHIV-specific proliferating T cells. The outcome of challenge with virulent SHIV(mn229) correlated with vaccine immunogenicity except that DNA vaccination alone primed for protection almost as effectively as the DNA/fowlpox virus regimen despite negligible immunogenicity by standard assays. These studies suggest that priming of immunity with DNA and fowlpox virus vaccines could delay AIDS in humans.
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Affiliation(s)
- C J Dale
- Department of Microbiology and Immunology, University of Melbourne, Victoria 3010, Australia
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