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He J, Gong L, Chen X, Cheng D, Hou S, Kong M, Wei X, Yu J, Zhu Q, Li W, Lu W, Feng Y, Gui H, Fang W, Wang P, Xia Y, Sun Y, Luo W, Yang Y, Shen G, Wang H, Wu J. A Retrospective Investigation of a Case of Dual Infection by Avian-Origin Influenza A (H10N5) and Seasonal Influenza A (H3N2) Viruses - Anhui Province, China, December 2023-January 2024. China CDC Wkly 2024; 6:605-613. [PMID: 38933038 PMCID: PMC11196879 DOI: 10.46234/ccdcw2024.106] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2024] [Accepted: 05/23/2024] [Indexed: 06/28/2024] Open
Abstract
What is known about this topic? H10 avian influenza viruses circulate in wild birds and can reassort with other subtypes. H10N8 and H10N3 have previously caused sporadic human infections in China. What is added by this report? This report documents the first human case of co-infection with avian-origin H10N5 and seasonal H3N2 influenza viruses. Epidemiological investigations identified H10N5 in environmental samples linked to the patient, but no transmission to close contacts occurred. What are the implications for public health practice? Enhanced surveillance of avian influenza in live poultry markets and poultry populations is crucial for thoroughly characterizing the epidemiology, transmission, and pathogenesis of H10N5 viruses. Strengthening assessments of outbreak control measures is essential to guide effective management.
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Affiliation(s)
- Jun He
- Anhui Provincial Center for Disease Control and Prevention, Hefei City, Anhui Province, China
- School of Public Health, Bengbu Medical University, Bengbu City, Anhui Province, China
| | - Lei Gong
- Public Health Research Institute of Anhui Province, Hefei City, Anhui Province, China
- School of Public Health, Anhui Medical University, Hefei City, Anhui Province, China
| | - Xiaolong Chen
- Xuancheng City Center for Disease Control and Prevention, Xuancheng City, Anhui Province, China
| | - Deman Cheng
- Xuancheng City Center for Disease Control and Prevention, Xuancheng City, Anhui Province, China
| | - Sai Hou
- Anhui Provincial Center for Disease Control and Prevention, Hefei City, Anhui Province, China
- Public Health Research Institute of Anhui Province, Hefei City, Anhui Province, China
| | - Mengyao Kong
- School of Public Health, Bengbu Medical University, Bengbu City, Anhui Province, China
| | - Xun Wei
- Guangde City Center for Disease Control and Prevention, Guangde City, Anhui Province, China
| | - Junling Yu
- Anhui Provincial Center for Disease Control and Prevention, Hefei City, Anhui Province, China
- Public Health Research Institute of Anhui Province, Hefei City, Anhui Province, China
| | - Qian Zhu
- Anhui Provincial Center for Disease Control and Prevention, Hefei City, Anhui Province, China
- Public Health Research Institute of Anhui Province, Hefei City, Anhui Province, China
| | - Weiwei Li
- Anhui Provincial Center for Disease Control and Prevention, Hefei City, Anhui Province, China
- Public Health Research Institute of Anhui Province, Hefei City, Anhui Province, China
| | - Wanhang Lu
- Anhui Provincial Center for Disease Control and Prevention, Hefei City, Anhui Province, China
- Public Health Research Institute of Anhui Province, Hefei City, Anhui Province, China
| | - Yujie Feng
- Anhui Provincial Center for Disease Control and Prevention, Hefei City, Anhui Province, China
- Public Health Research Institute of Anhui Province, Hefei City, Anhui Province, China
| | - Hongya Gui
- Anhui Provincial Center for Disease Control and Prevention, Hefei City, Anhui Province, China
- Public Health Research Institute of Anhui Province, Hefei City, Anhui Province, China
| | - Weixi Fang
- Anhui Provincial Center for Disease Control and Prevention, Hefei City, Anhui Province, China
- Public Health Research Institute of Anhui Province, Hefei City, Anhui Province, China
| | - Peng Wang
- Anhui Provincial Center for Disease Control and Prevention, Hefei City, Anhui Province, China
- Public Health Research Institute of Anhui Province, Hefei City, Anhui Province, China
| | - Yidan Xia
- School of Public Health, Anhui Medical University, Hefei City, Anhui Province, China
| | - Yong Sun
- Anhui Provincial Center for Disease Control and Prevention, Hefei City, Anhui Province, China
- Public Health Research Institute of Anhui Province, Hefei City, Anhui Province, China
| | - Wanrong Luo
- Anhui Provincial Center for Disease Control and Prevention, Hefei City, Anhui Province, China
- Public Health Research Institute of Anhui Province, Hefei City, Anhui Province, China
| | - Yun Yang
- Xuancheng City Center for Disease Control and Prevention, Xuancheng City, Anhui Province, China
| | - Guowei Shen
- Xuancheng City Center for Disease Control and Prevention, Xuancheng City, Anhui Province, China
| | - Hui Wang
- Xuancheng City Center for Disease Control and Prevention, Xuancheng City, Anhui Province, China
| | - Jiabing Wu
- Anhui Provincial Center for Disease Control and Prevention, Hefei City, Anhui Province, China
- Public Health Research Institute of Anhui Province, Hefei City, Anhui Province, China
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Zhou X, Lin Z, Tu J, Zhu C, Li H. Persistent predominance of the Victoria lineage of influenza B virus during COVID-19 epidemic in Nanchang, China. Influenza Other Respir Viruses 2023; 17:e13226. [PMID: 38090226 PMCID: PMC10710951 DOI: 10.1111/irv.13226] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2023] [Revised: 10/16/2023] [Accepted: 11/05/2023] [Indexed: 12/18/2023] Open
Abstract
The sentinel hospital-based influenza-like illness (ILI) surveillance network was established in China since the 2009 H1N1 pandemic. This network plays important roles in monitoring influenza virus variation and identifying novel respiratory pathogens. In this study, we characterized the pathogen spectrum pattern (PSP) of ILI based on three sentinel hospitals and analyzed the significant change of PSP during the COVID-19 epidemic. The notable change of influenza virus spectrum was observed since the beginning of COVID-19 outbreak, and we found persistent domination of Victoria lineage of influenza B virus and "extinction" of A/H1N1, A/H3N2, and B/Yamagata during the dynamic Zero-COVID-19 pandemic in Nanchang, China. However, these strains intermittently co-circulated before the COVID-19.
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Affiliation(s)
- Xianfeng Zhou
- Jiangxi University of Chinese MedicineNanchangChina
- Nanchang Center for Disease Control and PreventionNanchangChina
| | - Ziqi Lin
- Jiangxi University of Chinese MedicineNanchangChina
| | - Junling Tu
- Nanchang Center for Disease Control and PreventionNanchangChina
| | | | - Hui Li
- Nanchang Center for Disease Control and PreventionNanchangChina
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3
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Abstract
Avian influenza viruses pose a continuous threat to both poultry and human health, with significant economic impact. The ability of viruses to reassort and jump the species barrier into mammalian hosts generates a constant pandemic threat. H10Nx avian viruses have been shown to replicate in mammalian species without prior adaptation and have caused significant human infection and fatalities. They are able to rapidly reassort with circulating poultry strains and go undetected due to their low pathogenicity in chickens. Novel detections of both human reassortant strains and increasing endemicity of H10Nx poultry infections highlight the increasing need for heightened surveillance and greater understanding of the distribution, tropism, and infection capabilities of these viruses. In this minireview, we highlight the gap in the current understanding of this subtype and its prevalence across a vast range of host species and geographical locations.
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Song W, Guo J, Ni X, Wu J, Xia W, He F, Wang X, Fan G, Zhou K, Wu Y, Chen S, Chen H. Changes of avian influenza virus subtypes before and after vaccination in live poultry in Nanchang, China from 2016 to 2019. Microbes Infect 2021; 23:104848. [PMID: 34116164 DOI: 10.1016/j.micinf.2021.104848] [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: 03/10/2021] [Revised: 05/21/2021] [Accepted: 05/28/2021] [Indexed: 12/27/2022]
Abstract
We investigated fluctuations in the detection rates of avian influenza virus (AIV) subtypes H5, H7, and H9 in live bird markets (LBMs) in Nanchang city, Chinese province Jiangxi, before and after the Chinese nationwide AIV vaccination campaign against highly pathogenic (HP) AIV subtype H5 and H7. Samples were tested for nucleic acid of type A avian influenza virus by real-time reverse transcription polymerase chain reaction technology. The H5, H7 and H9 subtypes of influenza viruses were further classified for the positive results. Based on the analysis of 2,119 samples collected from February 2016 to December 2019, we found that AIV subtypes H5, H7, H9 showed a seasonal pattern, and the positive rate of avian influenza tended to reach its peak in the colder season. The detection rate of AIV subtypes H5, H7, H9 of chickens (39.26%) was significantly higher than that of ducks (5.78%) and pigeons (4.31%). After vaccination, the positive rates of the H5 subtype (0.27%) and the H7 subtype (0.00%) decreased significantly, while the positive rate of the H9 subtype (29.95%) increased significantly. The H9 subtype has become the dominant subtype detected in live poultry and occupies a dominant position in the live bird market. This study showed that the government of China should establish measures for the long-term control of avian influenza.
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Affiliation(s)
- Wentao Song
- The Collaboration Unit for Field Epidemiology of State Key Laboratory of Infectious Disease Prevention and Control, Jiangxi Provincial Key Laboratory of Animal-origin and Vector-borne Diseases, Nanchang Center for Disease Control and Prevention. Nanchang 330038, PR China
| | - Jin Guo
- School of Public Health, Nanchang University, Nanchang 330006, PR China
| | - Xiansheng Ni
- The Collaboration Unit for Field Epidemiology of State Key Laboratory of Infectious Disease Prevention and Control, Jiangxi Provincial Key Laboratory of Animal-origin and Vector-borne Diseases, Nanchang Center for Disease Control and Prevention. Nanchang 330038, PR China
| | - Jingwen Wu
- The Collaboration Unit for Field Epidemiology of State Key Laboratory of Infectious Disease Prevention and Control, Jiangxi Provincial Key Laboratory of Animal-origin and Vector-borne Diseases, Nanchang Center for Disease Control and Prevention. Nanchang 330038, PR China
| | - Wen Xia
- The Collaboration Unit for Field Epidemiology of State Key Laboratory of Infectious Disease Prevention and Control, Jiangxi Provincial Key Laboratory of Animal-origin and Vector-borne Diseases, Nanchang Center for Disease Control and Prevention. Nanchang 330038, PR China
| | - Fenglan He
- The Collaboration Unit for Field Epidemiology of State Key Laboratory of Infectious Disease Prevention and Control, Jiangxi Provincial Key Laboratory of Animal-origin and Vector-borne Diseases, Nanchang Center for Disease Control and Prevention. Nanchang 330038, PR China
| | - Xi Wang
- The Collaboration Unit for Field Epidemiology of State Key Laboratory of Infectious Disease Prevention and Control, Jiangxi Provincial Key Laboratory of Animal-origin and Vector-borne Diseases, Nanchang Center for Disease Control and Prevention. Nanchang 330038, PR China
| | - Guoyin Fan
- The Collaboration Unit for Field Epidemiology of State Key Laboratory of Infectious Disease Prevention and Control, Jiangxi Provincial Key Laboratory of Animal-origin and Vector-borne Diseases, Nanchang Center for Disease Control and Prevention. Nanchang 330038, PR China
| | - Kun Zhou
- The Collaboration Unit for Field Epidemiology of State Key Laboratory of Infectious Disease Prevention and Control, Jiangxi Provincial Key Laboratory of Animal-origin and Vector-borne Diseases, Nanchang Center for Disease Control and Prevention. Nanchang 330038, PR China
| | - Yuhang Wu
- School of Public Health, Nanchang University, Nanchang 330006, PR China
| | - Shengen Chen
- The Collaboration Unit for Field Epidemiology of State Key Laboratory of Infectious Disease Prevention and Control, Jiangxi Provincial Key Laboratory of Animal-origin and Vector-borne Diseases, Nanchang Center for Disease Control and Prevention. Nanchang 330038, PR China.
| | - Haiying Chen
- The Collaboration Unit for Field Epidemiology of State Key Laboratory of Infectious Disease Prevention and Control, Jiangxi Provincial Key Laboratory of Animal-origin and Vector-borne Diseases, Nanchang Center for Disease Control and Prevention. Nanchang 330038, PR China.
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Hood G, Roche X, Brioudes A, von Dobschuetz S, Fasina FO, Kalpravidh W, Makonnen Y, Lubroth J, Sims L. A literature review of the use of environmental sampling in the surveillance of avian influenza viruses. Transbound Emerg Dis 2021; 68:110-126. [PMID: 32652790 PMCID: PMC8048529 DOI: 10.1111/tbed.13633] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2019] [Revised: 05/07/2020] [Accepted: 05/13/2020] [Indexed: 02/05/2023]
Abstract
This literature review provides an overview of use of environmental samples (ES) such as faeces, water, air, mud and swabs of surfaces in avian influenza (AI) surveillance programs, focussing on effectiveness, advantages and gaps in knowledge. ES have been used effectively for AI surveillance since the 1970s. Results from ES have enhanced understanding of the biology of AI viruses in wild birds and in markets, of links between human and avian influenza, provided early warning of viral incursions, allowed assessment of effectiveness of control and preventive measures, and assisted epidemiological studies in outbreaks, both avian and human. Variation exists in the methods and protocols used, and no internationally recognized guidelines exist on the use of ES and data management. Few studies have performed direct comparisons of ES versus live bird samples (LBS). Results reported so far demonstrate reliance on ES will not be sufficient to detect virus in all cases when it is present, especially when the prevalence of infection/contamination is low. Multiple sample types should be collected. In live bird markets, ES from processing/selling areas are more likely to test positive than samples from bird holding areas. When compared to LBS, ES is considered a cost-effective, simple, rapid, flexible, convenient and acceptable way of achieving surveillance objectives. As a non-invasive technique, it can minimize effects on animal welfare and trade in markets and reduce impacts on wild bird communities. Some limitations of environmental sampling methods have been identified, such as the loss of species-specific or information on the source of virus, and taxonomic-level analyses, unless additional methods are applied. Some studies employing ES have not provided detailed methods. In others, where ES and LBS are collected from the same site, positive results have not been assigned to specific sample types. These gaps should be remedied in future studies.
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Affiliation(s)
- Grace Hood
- Food and Agriculture Organization of the United NationsRomeItaly
| | - Xavier Roche
- Food and Agriculture Organization of the United NationsRomeItaly
| | - Aurélie Brioudes
- Food and Agriculture Organization of the United NationsRegional Office for Asia and the PacificBangkokThailand
| | | | | | | | - Yilma Makonnen
- Food and Agriculture Organization of the United Nations, Sub-Regional Office for Eastern AfricaAddis AbabaEthiopia
| | - Juan Lubroth
- Food and Agriculture Organization of the United NationsRomeItaly
| | - Leslie Sims
- Asia Pacific Veterinary Information ServicesMelbourneAustralia
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Li QY, Xu MM, Dong H, Zhao JH, Xing JH, Wang G, Yao JY, Huang HB, Shi CW, Jiang YL, Wang JZ, Kang YH, Ullah N, Yang WT, Yang GL, Wang CF. Lactobacillus plantarum surface-displayed influenza antigens (NP-M2) with FliC flagellin stimulate generally protective immune responses against H9N2 influenza subtypes in chickens. Vet Microbiol 2020; 249:108834. [PMID: 32919197 DOI: 10.1016/j.vetmic.2020.108834] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2020] [Accepted: 08/23/2020] [Indexed: 01/11/2023]
Abstract
The H9N2 avian influenza virus (AIV) causes serious economic losses to the poultry industry every year. Vaccines that induce a mucosal immune response may be successful against influenza virus infection because its transmission occurs primarily in the mucosa. To develop novel and potent oral vaccines based on Lactobacillus plantarum (L. plantarum) to control the spread of AIV in poultry industry, in the present study, we constructed and expressed fusions of the influenza antigens NP and M2 with the Salmonella Typhimurium flagellinprotein FliC on the surface of L. plantarum. Oral immunization of chicks was performed, and serum antibodies, mucosal antibodies, and specific cellular immunity were detected. Immunizing chicks with avian influenza virus was evaluated. The results showed high levels of IgG in addition to high levels of secretory immunoglobulin A (sIgA) in chickens orally administered recombinant L. plantarum. In addition, the fusion may significantly increase the levels of NP- and M2-specific T cell-mediated immunity in the case of mucosal administration of NC8-pSIP409-pgsA'-NP-M2-FliC. Recombinant NC8-pSIP409-pgsA'-NP-M2-FliC mediated effectively protected chickens against influenza virus and reduced virus titers in the lung. Our study outcomes indicate that the expression of influenza NP-M2 and a mucosal adjuvant (FliC), by L. plantarum could generate a mucosal vaccine candidate for animals in the future to defend against AIVs.
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Affiliation(s)
- Qiong-Yan Li
- College of Animal Science and Technology, College of Veterinary Medicine, Jilin Provincial Engineering Research Center of Animal Probiotics, Key Laboratory of Animal Production and Product Quality Safety of Ministry of Education, Jilin Agricultural University, Changchun, China
| | - Man-Man Xu
- College of Animal Science and Technology, College of Veterinary Medicine, Jilin Provincial Engineering Research Center of Animal Probiotics, Key Laboratory of Animal Production and Product Quality Safety of Ministry of Education, Jilin Agricultural University, Changchun, China
| | - Hang Dong
- College of Animal Science and Technology, College of Veterinary Medicine, Jilin Provincial Engineering Research Center of Animal Probiotics, Key Laboratory of Animal Production and Product Quality Safety of Ministry of Education, Jilin Agricultural University, Changchun, China
| | - Jin-Hui Zhao
- College of Animal Science and Technology, College of Veterinary Medicine, Jilin Provincial Engineering Research Center of Animal Probiotics, Key Laboratory of Animal Production and Product Quality Safety of Ministry of Education, Jilin Agricultural University, Changchun, China
| | - Jun-Hong Xing
- College of Animal Science and Technology, College of Veterinary Medicine, Jilin Provincial Engineering Research Center of Animal Probiotics, Key Laboratory of Animal Production and Product Quality Safety of Ministry of Education, Jilin Agricultural University, Changchun, China
| | - Guan Wang
- College of Animal Science and Technology, College of Veterinary Medicine, Jilin Provincial Engineering Research Center of Animal Probiotics, Key Laboratory of Animal Production and Product Quality Safety of Ministry of Education, Jilin Agricultural University, Changchun, China
| | - Jia-Yun Yao
- College of Animal Science and Technology, College of Veterinary Medicine, Jilin Provincial Engineering Research Center of Animal Probiotics, Key Laboratory of Animal Production and Product Quality Safety of Ministry of Education, Jilin Agricultural University, Changchun, China; Agriculture Ministry Key Laboratory of Healthy Freshwater Aquaculture, Key Laboratory of Fish Health and Nutrition of Zhejiang Province, Zhejiang Institute of Freshwater Fisheries, Huzhou, China
| | - Hai-Bin Huang
- College of Animal Science and Technology, College of Veterinary Medicine, Jilin Provincial Engineering Research Center of Animal Probiotics, Key Laboratory of Animal Production and Product Quality Safety of Ministry of Education, Jilin Agricultural University, Changchun, China
| | - Chun-Wei Shi
- College of Animal Science and Technology, College of Veterinary Medicine, Jilin Provincial Engineering Research Center of Animal Probiotics, Key Laboratory of Animal Production and Product Quality Safety of Ministry of Education, Jilin Agricultural University, Changchun, China
| | - Yan-Long Jiang
- College of Animal Science and Technology, College of Veterinary Medicine, Jilin Provincial Engineering Research Center of Animal Probiotics, Key Laboratory of Animal Production and Product Quality Safety of Ministry of Education, Jilin Agricultural University, Changchun, China
| | - Jian-Zhong Wang
- College of Animal Science and Technology, College of Veterinary Medicine, Jilin Provincial Engineering Research Center of Animal Probiotics, Key Laboratory of Animal Production and Product Quality Safety of Ministry of Education, Jilin Agricultural University, Changchun, China
| | - Yuan-Huan Kang
- College of Animal Science and Technology, College of Veterinary Medicine, Jilin Provincial Engineering Research Center of Animal Probiotics, Key Laboratory of Animal Production and Product Quality Safety of Ministry of Education, Jilin Agricultural University, Changchun, China
| | - Naveed Ullah
- College of Animal Science and Technology, College of Veterinary Medicine, Jilin Provincial Engineering Research Center of Animal Probiotics, Key Laboratory of Animal Production and Product Quality Safety of Ministry of Education, Jilin Agricultural University, Changchun, China
| | - Wen-Tao Yang
- College of Animal Science and Technology, College of Veterinary Medicine, Jilin Provincial Engineering Research Center of Animal Probiotics, Key Laboratory of Animal Production and Product Quality Safety of Ministry of Education, Jilin Agricultural University, Changchun, China.
| | - Gui-Lian Yang
- College of Animal Science and Technology, College of Veterinary Medicine, Jilin Provincial Engineering Research Center of Animal Probiotics, Key Laboratory of Animal Production and Product Quality Safety of Ministry of Education, Jilin Agricultural University, Changchun, China.
| | - Chun-Feng Wang
- College of Animal Science and Technology, College of Veterinary Medicine, Jilin Provincial Engineering Research Center of Animal Probiotics, Key Laboratory of Animal Production and Product Quality Safety of Ministry of Education, Jilin Agricultural University, Changchun, China.
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Bertran K, Pantin-Jackwood MJ, Criado MF, Lee DH, Balzli CL, Spackman E, Suarez DL, Swayne DE. Pathobiology and innate immune responses of gallinaceous poultry to clade 2.3.4.4A H5Nx highly pathogenic avian influenza virus infection. Vet Res 2019; 50:89. [PMID: 31675983 PMCID: PMC6824115 DOI: 10.1186/s13567-019-0704-5] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2019] [Accepted: 09/27/2019] [Indexed: 11/10/2022] Open
Abstract
In the 2014-2015 Eurasian lineage clade 2.3.4.4A H5 highly pathogenic avian influenza (HPAI) outbreak in the U.S., backyard flocks with minor gallinaceous poultry and large commercial poultry (chickens and turkeys) operations were affected. The pathogenesis of the first H5N8 and reassortant H5N2 clade 2.3.4.4A HPAI U.S. isolates was investigated in six gallinaceous species: chickens, Japanese quail, Bobwhite quail, Pearl guinea fowl, Chukar partridges, and Ring-necked pheasants. Both viruses caused 80-100% mortality in all species, except for H5N2 virus that caused 60% mortality in chickens. The surviving challenged birds remained uninfected based on lack of clinical disease and lack of seroconversion. Among the infected birds, chickens and Japanese quail in early clinical stages (asymptomatic and listless) lacked histopathologic findings. In contrast, birds of all species in later clinical stages (moribund and dead) had histopathologic lesions and systemic virus replication consistent with HPAI virus infection in gallinaceous poultry. These birds had widespread multifocal areas of necrosis, sometimes with heterophilic or lymphoplasmacytic inflammatory infiltrate, and viral antigen in parenchymal cells of most tissues. In general, lesions and antigen distribution were similar regardless of virus and species. However, endotheliotropism was the most striking difference among species, with only Pearl guinea fowl showing widespread replication of both viruses in endothelial cells of most tissues. The expression of IFN-γ and IL-10 in Japanese quail, and IL-6 in chickens, were up-regulated in later clinical stages compared to asymptomatic birds.
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Affiliation(s)
- Kateri Bertran
- Exotic and Emerging Avian Viral Diseases Research Unit, Southeast Poultry Research Laboratory, U.S. National Poultry Research Center, Agricultural Research Service, U.S. Department of Agriculture, Athens, GA, 30605, USA.,IRTA, Centre de Recerca en Sanitat Animal (CReSA, IRTA-UAB), Campus de la Universitat Autònoma de Barcelona, 08193, Bellaterra, Barcelona, Spain
| | - Mary J Pantin-Jackwood
- Exotic and Emerging Avian Viral Diseases Research Unit, Southeast Poultry Research Laboratory, U.S. National Poultry Research Center, Agricultural Research Service, U.S. Department of Agriculture, Athens, GA, 30605, USA
| | - Miria F Criado
- Exotic and Emerging Avian Viral Diseases Research Unit, Southeast Poultry Research Laboratory, U.S. National Poultry Research Center, Agricultural Research Service, U.S. Department of Agriculture, Athens, GA, 30605, USA
| | - Dong-Hun Lee
- Exotic and Emerging Avian Viral Diseases Research Unit, Southeast Poultry Research Laboratory, U.S. National Poultry Research Center, Agricultural Research Service, U.S. Department of Agriculture, Athens, GA, 30605, USA.,Department of Pathobiology & Veterinary Science, University of Connecticut, Storrs, CT, 06269, USA
| | - Charles L Balzli
- Exotic and Emerging Avian Viral Diseases Research Unit, Southeast Poultry Research Laboratory, U.S. National Poultry Research Center, Agricultural Research Service, U.S. Department of Agriculture, Athens, GA, 30605, USA.,Battelle National Biodefense Institute, National Biodefense Analysis and Countermeasures Center, 8300 Research PI, Fort Detrick, MD, 21702, USA
| | - Erica Spackman
- Exotic and Emerging Avian Viral Diseases Research Unit, Southeast Poultry Research Laboratory, U.S. National Poultry Research Center, Agricultural Research Service, U.S. Department of Agriculture, Athens, GA, 30605, USA
| | - David L Suarez
- Exotic and Emerging Avian Viral Diseases Research Unit, Southeast Poultry Research Laboratory, U.S. National Poultry Research Center, Agricultural Research Service, U.S. Department of Agriculture, Athens, GA, 30605, USA
| | - David E Swayne
- Exotic and Emerging Avian Viral Diseases Research Unit, Southeast Poultry Research Laboratory, U.S. National Poultry Research Center, Agricultural Research Service, U.S. Department of Agriculture, Athens, GA, 30605, USA.
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8
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Suttie A, Karlsson EA, Deng YM, Hurt AC, Greenhill AR, Barr IG, Dussart P, Horwood PF. Avian influenza in the Greater Mekong Subregion, 2003-2018. INFECTION GENETICS AND EVOLUTION 2019; 74:103920. [PMID: 31201870 DOI: 10.1016/j.meegid.2019.103920] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/14/2019] [Revised: 05/20/2019] [Accepted: 06/11/2019] [Indexed: 12/15/2022]
Abstract
The persistent circulation of avian influenza viruses (AIVs) is an ongoing problem for many countries in South East Asia, causing large economic losses to both the agricultural and health sectors. This review analyses AIV diversity, evolution and the risk of AIV emergence in humans in countries of the Greater Mekong Subregion (GMS): Cambodia, Laos, Myanmar, Thailand and Vietnam (excluding China). The analysis was based on AIV sequencing data, serological studies, published journal articles and AIV outbreak reports available from January 2003 to December 2018. All countries of the GMS have suffered losses due repeated outbreaks of highly pathogenic (HP) H5N1 that has also caused human cases in all GMS countries. In Laos, Myanmar and Vietnam AIV outbreaks in domestic poultry have also been caused by clade 2.3.4.4 H5N6. A diverse range of low pathogenic AIVs (H1-H12) have been detected in poultry and wild bird species, though surveillance for and characterization of these subtypes is limited. Subtype H3, H4, H6 and H11 viruses have been detected over prolonged periods; whilst H1, H2, H7, H8, H10 and H12 viruses have only been detected transiently. H9 AIVs circulate endemically in Cambodia and Vietnam with seroprevalence data indicating human exposure to H9 AIVs in Cambodia, Thailand and Vietnam. As surveillance studies focus heavily on the detection of H5 AIVs in domestic poultry further research is needed to understand the true level of AIV diversity and the risk AIVs pose to humans in the GMS.
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Affiliation(s)
- Annika Suttie
- Virology Unit, Institute Pasteur in Cambodia, Phnom Penh, Cambodia; School of Applied and Biomedical Sciences, Federation University, Churchill, Australia; WHO Collaborating Centre for Reference and Research on Influenza, Victorian Infectious Diseases Reference Laboratory, Peter Doherty Institute for Infection and Immunity, Melbourne, VIC 3000, Australia
| | - Erik A Karlsson
- Virology Unit, Institute Pasteur in Cambodia, Phnom Penh, Cambodia
| | - Yi-Mo Deng
- WHO Collaborating Centre for Reference and Research on Influenza, Victorian Infectious Diseases Reference Laboratory, Peter Doherty Institute for Infection and Immunity, Melbourne, VIC 3000, Australia
| | - Aeron C Hurt
- WHO Collaborating Centre for Reference and Research on Influenza, Victorian Infectious Diseases Reference Laboratory, Peter Doherty Institute for Infection and Immunity, Melbourne, VIC 3000, Australia
| | - Andrew R Greenhill
- School of Applied and Biomedical Sciences, Federation University, Churchill, Australia
| | - Ian G Barr
- WHO Collaborating Centre for Reference and Research on Influenza, Victorian Infectious Diseases Reference Laboratory, Peter Doherty Institute for Infection and Immunity, Melbourne, VIC 3000, Australia
| | - Philippe Dussart
- Virology Unit, Institute Pasteur in Cambodia, Phnom Penh, Cambodia
| | - Paul F Horwood
- College of Public Health, Medical and Veterinary Sciences, James Cook University, Townsville, QLD 4811, Australia.
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Wu H, Yang F, Liu F, Peng X, Chen B, Cheng L, Lu X, Yao H, Wu N. Molecular characterization of H10 subtype avian influenza viruses isolated from poultry in Eastern China. Arch Virol 2018; 164:159-179. [PMID: 30302582 DOI: 10.1007/s00705-018-4019-z] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2018] [Accepted: 07/25/2018] [Indexed: 02/06/2023]
Abstract
In recent years, avian-origin H10 influenza viruses have proved capable of infecting human beings, and they pose a potential public health threat. Seven H10 avian influenza viruses (AIVs), H10N3 (n = 2), H10N7 (n = 1), and H10N8 (n = 4), were isolated from chickens in Zhejiang Province, Eastern China, during surveillance of AIVs in live poultry markets in 2016 and 2017. Phylogenetic analysis indicated that Zhejiang H10 strains received gene segments from H10, H3, and H7 viruses from birds in East Asia. Animal inoculation tests showed that these isolates have low pathogenicity in mice and can replicate in this species. Our findings suggest these H10 AIVs have the ability to adapt to chicken or other poultry, and highlight the need of long-term surveillance.
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Affiliation(s)
- Haibo Wu
- State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, The First Affiliated Hospital School of Medicine, Zhejiang University, Hangzhou, China.
| | - Fan Yang
- State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, The First Affiliated Hospital School of Medicine, Zhejiang University, Hangzhou, China
| | - Fumin Liu
- State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, The First Affiliated Hospital School of Medicine, Zhejiang University, Hangzhou, China
| | - Xiuming Peng
- State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, The First Affiliated Hospital School of Medicine, Zhejiang University, Hangzhou, China
| | - Bin Chen
- State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, The First Affiliated Hospital School of Medicine, Zhejiang University, Hangzhou, China
| | - Linfang Cheng
- State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, The First Affiliated Hospital School of Medicine, Zhejiang University, Hangzhou, China
| | - Xiangyun Lu
- State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, The First Affiliated Hospital School of Medicine, Zhejiang University, Hangzhou, China
| | - Hangping Yao
- State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, The First Affiliated Hospital School of Medicine, Zhejiang University, Hangzhou, China
| | - Nanping Wu
- State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, The First Affiliated Hospital School of Medicine, Zhejiang University, Hangzhou, China.
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10
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Pathobiology of Clade 2.3.4.4 H5Nx High-Pathogenicity Avian Influenza Virus Infections in Minor Gallinaceous Poultry Supports Early Backyard Flock Introductions in the Western United States in 2014-2015. J Virol 2017; 91:JVI.00960-17. [PMID: 28794040 DOI: 10.1128/jvi.00960-17] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2017] [Accepted: 08/04/2017] [Indexed: 11/20/2022] Open
Abstract
In 2014 and 2015, the United States experienced an unprecedented outbreak of Eurasian clade 2.3.4.4 H5 highly pathogenic avian influenza (HPAI) virus. Initial cases affected mainly wild birds and mixed backyard poultry species, while later outbreaks affected mostly commercial chickens and turkeys. The pathogenesis, transmission, and intrahost evolutionary dynamics of initial Eurasian H5N8 and reassortant H5N2 clade 2.3.4.4 HPAI viruses in the United States were investigated in minor gallinaceous poultry species (i.e., species for which the U.S. commercial industries are small), namely, Japanese quail, bobwhite quail, pearl guinea fowl, chukar partridges, and ring-necked pheasants. Low mean bird infectious doses (<2 to 3.7 log10) support direct introduction and infection of these species as observed in mixed backyard poultry during the early outbreaks. Pathobiological features and systemic virus replication in all species tested were consistent with HPAI virus infection. Sustained virus shedding with transmission to contact-exposed birds, alongside long incubation periods, may enable unrecognized dissemination and adaptation to other gallinaceous species, such as chickens and turkeys. Genome sequencing of excreted viruses revealed numerous low-frequency polymorphisms and 20 consensus-level substitutions in all genes and species, but especially in Japanese quail and pearl guinea fowl and in internal proteins PB1 and PB2. This genomic flexibility after only one passage indicates that influenza viruses can continue to evolve in galliform species, increasing their opportunity to adapt to other species. Our findings suggest that these gallinaceous poultry are permissive for infection and sustainable transmissibility with the 2014 initial wild bird-adapted clade 2.3.4.4 virus, with potential acquisition of mutations leading to host range adaptation.IMPORTANCE The outbreak of clade 2.3.4.4 H5 highly pathogenic avian influenza (HPAI) virus that occurred in the United States in 2014 and 2015 represents the worst livestock disease event in the country, with unprecedented socioeconomic and commercial consequences. Epidemiological and molecular investigations can identify transmission pathways of the HPAI virus. However, understanding the pathogenesis, transmission, and intrahost evolutionary dynamics of new HPAI viruses in different avian species is paramount. The significance of our research is in examining the susceptibility of minor gallinaceous species to HPAI virus, as this poultry sector also suffers from HPAI epizootics, and identifying the biological potential of these species as an epidemiological link between the waterfowl reservoir and the commercial chicken and turkey populations, with the ultimate goal of refining surveillance in these populations to enhance early detection, management, and control in future HPAI virus outbreaks.
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11
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Bosco-Lauth AM, Bowen RA, Root JJ. Limited transmission of emergent H7N9 influenza A virus in a simulated live animal market: Do chickens pose the principal transmission threat? Virology 2016; 495:161-6. [PMID: 27236304 DOI: 10.1016/j.virol.2016.04.032] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2016] [Revised: 04/27/2016] [Accepted: 04/28/2016] [Indexed: 11/16/2022]
Abstract
Emergent H7N9 influenza A virus has caused multiple public health and financial hardships. While some epidemiological studies have recognized infected chickens as an important bridge for human infections, the generality of this observation, the minimum infectious dose, and the shedding potential of chickens have received conflicting results. We experimentally tested the ability of domestic chickens (Gallus gallus domesticus) to transmit H7N9 to co-housed chickens and to several other animal species in an experimental live animal market. Results indicated that an infected chicken failed to initiate viral shedding of H7N9 to naïve co-housed chickens. The infected chicken did, however, successfully transmit the virus to quail (Coturnix sp.) located directly below the infected chicken cage. Oral shedding by indirectly infected quail was, on average, greater than ten-fold that of directly inoculated chickens. Best management practices in live animal market systems should consider the position of quail in stacked-cage settings.
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Affiliation(s)
- Angela M Bosco-Lauth
- Department of Biomedical Sciences, Colorado State University, Fort Collins, CO, USA.
| | - Richard A Bowen
- Department of Biomedical Sciences, Colorado State University, Fort Collins, CO, USA
| | - J Jeffrey Root
- United States Department of Agriculture, National Wildlife Research Center, Fort Collins, CO, USA
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12
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Huang Y, Zhang H, Li X, Hu S, Cai L, Sun Q, Li W, Deng Z, Xiang X, Zhang H, Li F, Gao L. Detection and Genetic Characteristics of H9N2 Avian Influenza Viruses from Live Poultry Markets in Hunan Province, China. PLoS One 2015; 10:e0142584. [PMID: 26554921 PMCID: PMC4640513 DOI: 10.1371/journal.pone.0142584] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2015] [Accepted: 10/24/2015] [Indexed: 12/26/2022] Open
Abstract
H9N2 avian influenza viruses (AIVs) are highly prevalent and of low pathogenicity in domestic poultry. These viruses show a high genetic compatibility with other subtypes of AIVs and have been involved in the genesis of H5N1, H7N9 and H10N8 viruses causing severe infection in humans. The first case of human infection with H9N2 viruses in Hunan province of China have been confirmed in November 2013 and identified that H9N2 viruses from live poultry markets (LPMs) near the patient’s house could be the source of infection. However, the prevalence, distribution and genetic characteristics of H9N2 viruses in LPMs all over the province are not clear. We collected and tested 3943 environmental samples from 380 LPMs covering all 122 counties/districts of Hunan province from February to April, 2014. A total of 618 (15.7%) samples were H9 subtype positive and 200 (52.6%) markets in 98 (80.3%) counties/districts were contaminated with H9 subtype AIVs. We sequenced the entire coding sequences of the genomes of eleven H9N2 isolates from environmental samples. Phylogenetic analysis showed that the gene sequences of the H9N2 AIVs exhibited high homology (94.3%-100%). All eleven viruses were in a same branch in the phylogenetic trees and belonged to a same genotype. No gene reassortment had been found. Molecular analysis demonstrated that all the viruses had typical molecular characteristics of contemporary avian H9N2 influenza viruses. Continued surveillance of AIVs in LPMs is warranted for identification of further viral evolution and novel reassortants with pandemic potential.
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Affiliation(s)
- Yiwei Huang
- Hunan Provincial Center for Disease Control and Prevention, Changsha, Hunan, People’s Republic of China
| | - Hong Zhang
- Hunan Provincial Center for Disease Control and Prevention, Changsha, Hunan, People’s Republic of China
| | - Xiaodan Li
- National Institute for Viral Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing, People’s Republic of China
| | - Shixiong Hu
- Hunan Provincial Center for Disease Control and Prevention, Changsha, Hunan, People’s Republic of China
| | - Liang Cai
- Hunan Provincial Center for Disease Control and Prevention, Changsha, Hunan, People’s Republic of China
| | - Qianlai Sun
- Hunan Provincial Center for Disease Control and Prevention, Changsha, Hunan, People’s Republic of China
| | - Wenchao Li
- Hunan Provincial Center for Disease Control and Prevention, Changsha, Hunan, People’s Republic of China
| | - Zhihong Deng
- Hunan Provincial Center for Disease Control and Prevention, Changsha, Hunan, People’s Republic of China
| | - Xingyu Xiang
- Hunan Provincial Center for Disease Control and Prevention, Changsha, Hunan, People’s Republic of China
| | - Hengjiao Zhang
- Hunan Provincial Center for Disease Control and Prevention, Changsha, Hunan, People’s Republic of China
| | - Fangcai Li
- Hunan Provincial Center for Disease Control and Prevention, Changsha, Hunan, People’s Republic of China
| | - Lidong Gao
- Hunan Provincial Center for Disease Control and Prevention, Changsha, Hunan, People’s Republic of China
- * E-mail:
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13
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Rapid Detection of Subtype H10N8 Influenza Virus by One-Step Reverse Transcription-Loop-Mediated Isothermal Amplification Methods. J Clin Microbiol 2015; 53:3884-7. [PMID: 26378283 DOI: 10.1128/jcm.02165-15] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2015] [Accepted: 09/14/2015] [Indexed: 11/20/2022] Open
Abstract
We developed hemagglutinin- and neuraminidase-specific one-step reverse transcription-loop-mediated isothermal amplification assays for detecting the H10N8 virus. The detection limit of the assays was 10 copies of H10N8 virus, and the assays did not amplify nonspecific RNA. The assays can detect H10N8 virus from chicken samples with high sensitivity and specificity, and they can serve as an effective tool for detecting and monitoring H10N8 virus in live poultry markets.
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14
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Chen H, Huang L, Li H, Zhou X, Li H, Sun N, Qi W, Xiao C, Ni X, Liu M, Liao M. High Pathogenicity of Influenza A (H10N8) Virus in Mice. Am J Trop Med Hyg 2015; 93:1360-3. [PMID: 26350451 DOI: 10.4269/ajtmh.15-0064] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2015] [Accepted: 07/27/2015] [Indexed: 01/31/2023] Open
Abstract
Three human cases of H10N8 virus infections were initially reported in China in late 2013 and early 2014, two of which were fatal. This was the first time the H10N8 subtype has been detected in humans, and the pathogenicity of this virus remains under characterized. We first assessed its pathogenicity by infecting BALB/c mice with two H10N8 isolates, A/Jiangxi-Donghu/346-1/2013 and A/Chicken/Jiangxi/102/2013. The human isolate (H346-1) demonstrated stronger capability of replication and induced higher cytokine response in vivo than the chicken isolate (C102). In addition, H346-1 was fatal to mice, while all mice (N = 14) in C102-infected group survived during the infection course without weight loss. We hypothesized that the 627K mutation in the PB2 gene (PB2-K627) in H346-1 was associated with high pathogenicity in mice. Taken together, this study based on mouse model provides some insight into understanding the pathogenicity of the emerging viruses in mammals.
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Affiliation(s)
- Haiying Chen
- Department of Infectious Diseases, Nanchang Center for Disease Control and Prevention, Nanchang, China; College of Veterinary Medicine, South China Agricultural University, Guangzhou, China
| | - Lihong Huang
- Department of Infectious Diseases, Nanchang Center for Disease Control and Prevention, Nanchang, China; College of Veterinary Medicine, South China Agricultural University, Guangzhou, China
| | - Hui Li
- Department of Infectious Diseases, Nanchang Center for Disease Control and Prevention, Nanchang, China; College of Veterinary Medicine, South China Agricultural University, Guangzhou, China
| | - Xianfeng Zhou
- Department of Infectious Diseases, Nanchang Center for Disease Control and Prevention, Nanchang, China; College of Veterinary Medicine, South China Agricultural University, Guangzhou, China
| | - Huanan Li
- Department of Infectious Diseases, Nanchang Center for Disease Control and Prevention, Nanchang, China; College of Veterinary Medicine, South China Agricultural University, Guangzhou, China
| | - Na Sun
- Department of Infectious Diseases, Nanchang Center for Disease Control and Prevention, Nanchang, China; College of Veterinary Medicine, South China Agricultural University, Guangzhou, China
| | - Wenbao Qi
- Department of Infectious Diseases, Nanchang Center for Disease Control and Prevention, Nanchang, China; College of Veterinary Medicine, South China Agricultural University, Guangzhou, China
| | - Chencheng Xiao
- Department of Infectious Diseases, Nanchang Center for Disease Control and Prevention, Nanchang, China; College of Veterinary Medicine, South China Agricultural University, Guangzhou, China
| | - Xiansheng Ni
- Department of Infectious Diseases, Nanchang Center for Disease Control and Prevention, Nanchang, China; College of Veterinary Medicine, South China Agricultural University, Guangzhou, China
| | - Mingbin Liu
- Department of Infectious Diseases, Nanchang Center for Disease Control and Prevention, Nanchang, China; College of Veterinary Medicine, South China Agricultural University, Guangzhou, China
| | - Ming Liao
- Department of Infectious Diseases, Nanchang Center for Disease Control and Prevention, Nanchang, China; College of Veterinary Medicine, South China Agricultural University, Guangzhou, China
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15
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Genetics, Receptor Binding, and Virulence in Mice of H10N8 Influenza Viruses Isolated from Ducks and Chickens in Live Poultry Markets in China. J Virol 2015; 89:6506-10. [PMID: 25855738 DOI: 10.1128/jvi.00017-15] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2015] [Accepted: 03/30/2015] [Indexed: 12/11/2022] Open
Abstract
We analyzed eight H10N8 viruses isolated from ducks and chickens in live poultry markets from 2009 to 2013 in China. These viruses showed distinct genetic diversity and formed five genotypes: the four duck isolates formed four different genotypes, whereas the four chicken viruses belong to a single genotype. The viruses bound to both human- and avian-type receptors, and four of the viruses caused 12.7% to 22.5% body weight loss in mice.
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16
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Structure and receptor binding preferences of recombinant hemagglutinins from avian and human H6 and H10 influenza A virus subtypes. J Virol 2015; 89:4612-23. [PMID: 25673707 DOI: 10.1128/jvi.03456-14] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023] Open
Abstract
UNLABELLED During 2013, three new avian influenza A virus subtypes, A(H7N9), A(H6N1), and A(H10N8), resulted in human infections. While the A(H7N9) virus resulted in a significant epidemic in China across 19 provinces and municipalities, both A(H6N1) and A(H10N8) viruses resulted in only a few human infections. This study focuses on the major surface glycoprotein hemagglutinins from both of these novel human viruses. The detailed structural and glycan microarray analyses presented here highlight the idea that both A(H6N1) and A(H10N8) virus hemagglutinins retain a strong avian receptor binding preference and thus currently pose a low risk for sustained human infections. IMPORTANCE Human infections with zoonotic influenza virus subtypes continue to be a great public health concern. We report detailed structural analysis and glycan microarray data for recombinant hemagglutinins from A(H6N1) and A(H10N8) viruses, isolated from human infections in 2013, and compare them with hemagglutinins of avian origin. This is the first structural report of an H6 hemagglutinin, and our results should further the understanding of these viruses and provide useful information to aid in the continuous surveillance of these zoonotic influenza viruses.
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17
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Chan JFW, To KKW, Chen H, Yuen KY. Cross-species transmission and emergence of novel viruses from birds. Curr Opin Virol 2015; 10:63-9. [PMID: 25644327 PMCID: PMC7102742 DOI: 10.1016/j.coviro.2015.01.006] [Citation(s) in RCA: 56] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2014] [Revised: 12/29/2014] [Accepted: 01/09/2015] [Indexed: 12/29/2022]
Abstract
The role of birds in cross-species transmission and emergence of novel viruses such as avian influenza A viruses are discussed. The novel avian viruses identified between 2012 and 2014 are summarized. The concept of ‘pathogen augmentation’ is introduced.
Birds, the only living member of the Dinosauria clade, are flying warm-blooded vertebrates displaying high species biodiversity, roosting and migratory behavior, and a unique adaptive immune system. Birds provide the natural reservoir for numerous viral species and therefore gene source for evolution, emergence and dissemination of novel viruses. The intrusions of human into natural habitats of wild birds, the domestication of wild birds as pets or racing birds, and the increasing poultry consumption by human have facilitated avian viruses to cross species barriers to cause zoonosis. Recently, a novel adenovirus was exclusively found in birds causing an outbreak of Chlamydophila psittaci infection among birds and humans. Instead of being the primary cause of an outbreak by jumping directly from bird to human, a novel avian virus can be an augmenter of another zoonotic agent causing the outbreak. A comprehensive avian virome will improve our understanding of birds’ evolutionary dynamics.
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Affiliation(s)
- Jasper Fuk-Woo Chan
- State Key Laboratory of Emerging Infectious Diseases, Department of Microbiology, and Research Centre of Infection and Immunology, The University of Hong Kong, Hong Kong Special Administrative Region
| | - Kelvin Kai-Wang To
- State Key Laboratory of Emerging Infectious Diseases, Department of Microbiology, and Research Centre of Infection and Immunology, The University of Hong Kong, Hong Kong Special Administrative Region
| | - Honglin Chen
- State Key Laboratory of Emerging Infectious Diseases, Department of Microbiology, and Research Centre of Infection and Immunology, The University of Hong Kong, Hong Kong Special Administrative Region
| | - Kwok-Yung Yuen
- State Key Laboratory of Emerging Infectious Diseases, Department of Microbiology, and Research Centre of Infection and Immunology, The University of Hong Kong, Hong Kong Special Administrative Region.
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18
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Wohlbold TJ, Hirsh A, Krammer F. An H10N8 influenza virus vaccine strain and mouse challenge model based on the human isolate A/Jiangxi-Donghu/346/13. Vaccine 2015; 33:1102-6. [PMID: 25604801 DOI: 10.1016/j.vaccine.2015.01.026] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2014] [Revised: 12/18/2014] [Accepted: 01/08/2015] [Indexed: 10/24/2022]
Abstract
Three human cases of H10N8 viruses were reported in China in late 2013 and early 2014, two of which were fatal. This was the first time the H10N8 subtype has been detected in humans and no vaccine candidates or antibody therapy has been developed for these viruses so far. We developed an H10N8 vaccine candidate virus based on A/Jiangxi-Donghu/346/13 that can also be used in a murine challenge model for vaccine and monoclonal antibody research. The vaccine virus is a 6:2 re-assortant virus expressing the surface glycoproteins of A/Jiangxi-Donghu/346/13 on an A/Puerto Rico/8/34 backbone. Vaccination with inactivated challenge virus or recombinant hemagglutinin or neuraminidase derived from this strain protected mice from viral challenge.
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Affiliation(s)
- Teddy John Wohlbold
- Graduate School of Biological Sciences, Icahn School of Medicine at Mount Sinai, New York, NY, USA; Department of Microbiology, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Ariana Hirsh
- Graduate School of Biological Sciences, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Florian Krammer
- Graduate School of Biological Sciences, Icahn School of Medicine at Mount Sinai, New York, NY, USA.
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