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Ku CC, Lin CY, Yang CR, Yang YC, Chen PL, Lin YT, Wang PR, Lee MS, Liang SM, Hsiao PW. Vaccine optimization for highly pathogenic avian influenza: Assessment of antibody responses and protection for virus-like particle vaccines in chickens. Vaccine X 2024; 20:100552. [PMID: 39309609 PMCID: PMC11415583 DOI: 10.1016/j.jvacx.2024.100552] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2024] [Revised: 09/04/2024] [Accepted: 09/04/2024] [Indexed: 09/25/2024] Open
Abstract
Background Recent outbreaks of clade 2.3.4.4b highly pathogenic avian influenza (HPAI) H5N1 viruses in regions previously less affected since 2020 have raised global concerns. Implementing mass immunization or ring vaccination in poultry should be a countermeasure ready to contain disease outbreaks. This study focuses on developing a recombinant H5N2 vaccine based on virus-like particles (VLPs) against clade 2.3.4.4c, the predominant HPAI subclade in Taiwan since its emergence, leading to a large outbreak in 2015. Methods The study aimed to confirm the effectiveness of clade 2.3.4.4c H5N2 VLPs in protecting chickens and identify the best adjuvants for the VLP vaccine. We used Montanide 71VG-adjuvanted inactivated RG6 to establish the immunization protocol, followed by prime-boost H5N2-VLP immunizations. We compared adjuvants: 71VG, 71VG with VP3, and Alum with VP3. Serum samples were tested for antibodies against homologous vaccine antigens and cross-clade antigens by hemagglutination inhibition (HI) assays. Finally, we evaluated the protective efficacy by lethally challenging immunized chickens with H5 viruses from clade 1 or 2.3.4.4c. Results Poultry adjuvant 71VG significantly enhanced antibody responses in chickens with inactivated RG6 compared to unadjuvanted inactivated virus. While increasing antigen dosage enhanced 71VG adjuvanted RG6-induced antibody titers, the vaccine displayed minimal cross-reactivity against locally circulating HPAI H5N2. In contrast, H5N2-VLP containing the HA protein of clade 2.3.4.4c, adjuvanted with (FMDV) VP3 in 71VG, significantly promoted HI antibody responses. All H5N2-VLP immunized chickens survived lethal challenges with the local clade 2.3.4.4c H5 strain. Conclusion The study demonstrated the immunogenic potential of the VLP vaccine in chickens. Our findings offer insights for optimizing VLP vaccines, allowing the incorporation of the HA of currently circulating H5 viruses to effectively mitigate the impact of the rapidly evolving clade 2.3.4.4 H5 outbreaks.
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Affiliation(s)
- Chia-Chi Ku
- Graduate Institute of Immunology, National Taiwan University, College of Medicine, Taipei 10051, Taiwan
| | - Cheng-Yu Lin
- Graduate Institute of Immunology, National Taiwan University, College of Medicine, Taipei 10051, Taiwan
| | - Chin-Rur Yang
- Graduate Institute of Immunology, National Taiwan University, College of Medicine, Taipei 10051, Taiwan
| | - Yu-Chih Yang
- Agricultural Biotechnology Research Center, Academia Sinica, 128 Academia Rd., Section 2, Nankang, Taipei 11529, Taiwan
| | - Po-Ling Chen
- National Institute of Infectious Diseases and Vaccinology, National Health Research Institutes, Zhunan, Miaoli 35053, Taiwan
| | - Yi-Te Lin
- Agricultural Biotechnology Research Center, Academia Sinica, 128 Academia Rd., Section 2, Nankang, Taipei 11529, Taiwan
| | - Pei-Ru Wang
- Graduate Institute of Immunology, National Taiwan University, College of Medicine, Taipei 10051, Taiwan
| | - Min-Shi Lee
- National Institute of Infectious Diseases and Vaccinology, National Health Research Institutes, Zhunan, Miaoli 35053, Taiwan
| | - Shu-Mei Liang
- Agricultural Biotechnology Research Center, Academia Sinica, 128 Academia Rd., Section 2, Nankang, Taipei 11529, Taiwan
| | - Pei-Wen Hsiao
- Agricultural Biotechnology Research Center, Academia Sinica, 128 Academia Rd., Section 2, Nankang, Taipei 11529, Taiwan
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Degtyarev E, Feoktistova S, Volchkov P, Deviatkin A. Complex Evolutionary Dynamics of H5N8 Influenza A Viruses Revealed by Comprehensive Reassortment Analysis. Viruses 2024; 16:1405. [PMID: 39339881 PMCID: PMC11437431 DOI: 10.3390/v16091405] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2024] [Revised: 08/28/2024] [Accepted: 08/30/2024] [Indexed: 09/30/2024] Open
Abstract
Influenza A viruses (IAVs) circulate among different species and have the potential to cause significant pandemics in humans. This study focuses on reassortment events in the H5N8 subtype of IAV, which poses a serious threat to public health due to its high pathogenicity in birds and potential for cross-species transmission. We retrieved 2359 H5N8 IAV sequences from GISAID, and filtered and analyzed 442 complete genomic sequences for reassortment events using pairwise distance deviation matrices (PDDMs) and pairwise distance correspondence plots (PDCPs). This detailed case study of specific H5N8 viruses revealed previously undescribed reassortment events, highlighting the complex evolutionary history and potential pandemic threat of H5N8 IAVs.
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Affiliation(s)
- Egor Degtyarev
- Federal Research Center for Innovator and Emerging Biomedical and Pharmaceutical Technologies, 125315 Moscow, Russia
| | - Sofia Feoktistova
- Federal Research Center for Innovator and Emerging Biomedical and Pharmaceutical Technologies, 125315 Moscow, Russia
| | - Pavel Volchkov
- Federal Research Center for Innovator and Emerging Biomedical and Pharmaceutical Technologies, 125315 Moscow, Russia
- Center for Personalized Medicine, The MCSC Named after A.S. Loginov, 111123 Moscow, Russia
| | - Andrey Deviatkin
- Federal Research Center for Innovator and Emerging Biomedical and Pharmaceutical Technologies, 125315 Moscow, Russia
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Chen YC, Chu JF, Hsieh KW, Lin TH, Chang PZ, Tsai YC. Automatic wild bird repellent system that is based on deep-learning-based wild bird detection and integrated with a laser rotation mechanism. Sci Rep 2024; 14:15924. [PMID: 38987345 PMCID: PMC11237150 DOI: 10.1038/s41598-024-66920-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2023] [Accepted: 07/05/2024] [Indexed: 07/12/2024] Open
Abstract
Wild bird repulsion is critical in agriculture because it helps avoid agricultural food losses and mitigates the risk of avian influenza. Wild birds transmit avian influenza in poultry farms and thus cause large economic losses. In this study, we developed an automatic wild bird repellent system that is based on deep-learning-based wild bird detection and integrated with a laser rotation mechanism. When a wild bird appears at a farm, the proposed system detects the bird's position in an image captured by its detection unit and then uses a laser beam to repel the bird. The wild bird detection model of the proposed system was optimized for detecting small pixel targets, and trained through a deep learning method by using wild bird images captured at different farms. Various wild bird repulsion experiments were conducted using the proposed system at an outdoor duck farm in Yunlin, Taiwan. The statistical test results of our experimental data indicated that the proposed automatic wild bird repellent system effectively reduced the number of wild birds in the farm. The experimental results indicated that the developed system effectively repelled wild birds, with a high repulsion rate of 40.3% each day.
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Affiliation(s)
- Yu-Chieh Chen
- Institute of Applied Mechanics, National Taiwan University, Taipei, 106319, Taiwan
| | - Jing-Fang Chu
- Department of Bio-Industrial Mechatronics Engineering, National Chung Hsing University, Taichung, 402202, Taiwan
| | - Kuang-Wen Hsieh
- Department of Bio-Industrial Mechatronics Engineering, National Chung Hsing University, Taichung, 402202, Taiwan
- Smart Sustainable New Agriculture Research Center (SMARTer), Taichung, 402, Taiwan
| | - Tzung-Han Lin
- Graduate Institute of Color and Illumination Technology, National Taiwan University of Science and Technology, Taipei, 106335, Taiwan
| | - Pei-Zen Chang
- Institute of Applied Mechanics, National Taiwan University, Taipei, 106319, Taiwan
| | - Yao-Chuan Tsai
- Department of Bio-Industrial Mechatronics Engineering, National Chung Hsing University, Taichung, 402202, Taiwan.
- Smart Sustainable New Agriculture Research Center (SMARTer), Taichung, 402, Taiwan.
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4
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Herfst S, Begeman L, Spronken MI, Poen MJ, Eggink D, de Meulder D, Lexmond P, Bestebroer TM, Koopmans MPG, Kuiken T, Richard M, Fouchier RAM. A Dutch highly pathogenic H5N6 avian influenza virus showed remarkable tropism for extra-respiratory organs and caused severe disease but was not transmissible via air in the ferret model. mSphere 2023; 8:e0020023. [PMID: 37428085 PMCID: PMC10449504 DOI: 10.1128/msphere.00200-23] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2023] [Accepted: 06/01/2023] [Indexed: 07/11/2023] Open
Abstract
Continued circulation of A/H5N1 influenza viruses of the A/goose/Guangdong/1/96 lineage in poultry has resulted in the diversification in multiple genetic and antigenic clades. Since 2009, clade 2.3.4.4 hemagglutinin (HA) containing viruses harboring the internal and neuraminidase (NA) genes of other avian influenza A viruses have been detected. As a result, various HA-NA combinations, such as A/H5N1, A/H5N2, A/H5N3, A/H5N5, A/H5N6, and A/H5N8 have been identified. As of January 2023, 83 humans have been infected with A/H5N6 viruses, thereby posing an apparent risk for public health. Here, as part of a risk assessment, the in vitro and in vivo characterization of A/H5N6 A/black-headed gull/Netherlands/29/2017 is described. This A/H5N6 virus was not transmitted between ferrets via the air but was of unexpectedly high pathogenicity compared to other described A/H5N6 viruses. The virus replicated and caused severe lesions not only in respiratory tissues but also in multiple extra-respiratory tissues, including brain, liver, pancreas, spleen, lymph nodes, and adrenal gland. Sequence analyses demonstrated that the well-known mammalian adaptation substitution D701N was positively selected in almost all ferrets. In the in vitro experiments, no other known viral phenotypic properties associated with mammalian adaptation or increased pathogenicity were identified. The lack of transmission via the air and the absence of mammalian adaptation markers suggest that the public health risk of this virus is low. The high pathogenicity of this virus in ferrets could not be explained by the known mammalian pathogenicity factors and should be further studied. IMPORTANCE Avian influenza A/H5 viruses can cross the species barrier and infect humans. These infections can have a fatal outcome, but fortunately these influenza A/H5 viruses do not spread between humans. However, the extensive circulation and reassortment of A/H5N6 viruses in poultry and wild birds warrant risk assessments of circulating strains. Here an in-depth characterization of the properties of an avian A/H5N6 influenza virus isolated from a black-headed gull in the Netherlands was performed in vitro and in vivo, in ferrets. The virus was not transmissible via the air but caused severe disease and spread to extra-respiratory organs. Apart from the detection in ferrets of a mutation that increased virus replication, no other mammalian adaptation phenotypes were identified. Our results suggest that the risk of this avian A/H5N6 virus for public health is low. The underlying reasons for the high pathogenicity of this virus are unexplained and should be further studied.
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Affiliation(s)
- Sander Herfst
- Department of Viroscience, Erasmus University Medical Center, Rotterdam, the Netherlands
| | - Lineke Begeman
- Department of Viroscience, Erasmus University Medical Center, Rotterdam, the Netherlands
| | - Monique I. Spronken
- Department of Viroscience, Erasmus University Medical Center, Rotterdam, the Netherlands
| | - Marjolein J. Poen
- Department of Viroscience, Erasmus University Medical Center, Rotterdam, the Netherlands
| | - Dirk Eggink
- Academic Medical Center Amsterdam, Laboratory of Experimental Virology, Amsterdam, the Netherlands
| | - Dennis de Meulder
- Department of Viroscience, Erasmus University Medical Center, Rotterdam, the Netherlands
| | - Pascal Lexmond
- Department of Viroscience, Erasmus University Medical Center, Rotterdam, the Netherlands
| | - Theo M. Bestebroer
- Department of Viroscience, Erasmus University Medical Center, Rotterdam, the Netherlands
| | - Marion P. G. Koopmans
- Department of Viroscience, Erasmus University Medical Center, Rotterdam, the Netherlands
| | - Thijs Kuiken
- Department of Viroscience, Erasmus University Medical Center, Rotterdam, the Netherlands
| | - Mathilde Richard
- Department of Viroscience, Erasmus University Medical Center, Rotterdam, the Netherlands
| | - Ron A. M. Fouchier
- Department of Viroscience, Erasmus University Medical Center, Rotterdam, the Netherlands
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Yang XY, Gong QL, Li YJ, Ata EB, Hu MJ, Sun YY, Xue ZY, Yang YS, Sun XP, Shi CW, Yang GL, Huang HB, Jiang YL, Wang JZ, Cao X, Wang N, Zeng Y, Yang WT, Wang CF. The global prevalence of highly pathogenic avian influenza A (H5N8) infection in birds: A systematic review and meta-analysis. Microb Pathog 2023; 176:106001. [PMID: 36682670 DOI: 10.1016/j.micpath.2023.106001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2022] [Revised: 01/18/2023] [Accepted: 01/18/2023] [Indexed: 01/20/2023]
Abstract
The zoonotic pathogen avian influenza A H5N8 causes enormous economic losses in the poultry industry and poses a serious threat to the public health. Here, we report the first systematic review and meta-analysis of the worldwide prevalence of birds. We filtered 45 eligible articles from seven databases. A random-effects model was used to analyze the prevalence of H5N8 in birds. The pooled prevalence of H5N8 in birds was 1.6%. In the regions, Africa has the highest prevalence (8.0%). Based on the source, village (8.3%) was the highest. In the sample type, the highest prevalence was organs (79.7%). In seasons, the highest prevalence was autumn (28.1%). The largest prevalence in the sampling time was during 2019 or later (7.0%). Furthermore, geographical factors also were associated with the prevalence. Therefore, we recommend site-specific prevention and control tools for this strain in birds and enhance the surveillance to reduce the spread of H5N8.
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Affiliation(s)
- Xue-Yao Yang
- College of Veterinary Medicine, College of Animal Science and Technology, Jilin Provincial Engineering Research Center of Animal Probiotics, Key Laboratory of Animal Production and Product Quality Safety of Ministry of Education, Jilin Agricultural University, 2888 Xincheng Street, Changchun, 130118, China
| | - Qing-Long Gong
- College of Veterinary Medicine, College of Animal Science and Technology, Jilin Provincial Engineering Research Center of Animal Probiotics, Key Laboratory of Animal Production and Product Quality Safety of Ministry of Education, Jilin Agricultural University, 2888 Xincheng Street, Changchun, 130118, China
| | - Yan-Jin Li
- College of Veterinary Medicine, College of Animal Science and Technology, Jilin Provincial Engineering Research Center of Animal Probiotics, Key Laboratory of Animal Production and Product Quality Safety of Ministry of Education, Jilin Agricultural University, 2888 Xincheng Street, Changchun, 130118, China
| | - Emad Beshir Ata
- Parasitology and Animal Diseases Dep., Vet. Res. Institute, National Research Centre, 12622, Dokki, Cairo, Egypt
| | - Man-Jie Hu
- College of Veterinary Medicine, College of Animal Science and Technology, Jilin Provincial Engineering Research Center of Animal Probiotics, Key Laboratory of Animal Production and Product Quality Safety of Ministry of Education, Jilin Agricultural University, 2888 Xincheng Street, Changchun, 130118, China
| | - Yong-Yang Sun
- College of Veterinary Medicine, College of Animal Science and Technology, Jilin Provincial Engineering Research Center of Animal Probiotics, Key Laboratory of Animal Production and Product Quality Safety of Ministry of Education, Jilin Agricultural University, 2888 Xincheng Street, Changchun, 130118, China
| | - Zhi-Yang Xue
- College of Veterinary Medicine, College of Animal Science and Technology, Jilin Provincial Engineering Research Center of Animal Probiotics, Key Laboratory of Animal Production and Product Quality Safety of Ministry of Education, Jilin Agricultural University, 2888 Xincheng Street, Changchun, 130118, China
| | - Ying-Shi Yang
- College of Veterinary Medicine, College of Animal Science and Technology, Jilin Provincial Engineering Research Center of Animal Probiotics, Key Laboratory of Animal Production and Product Quality Safety of Ministry of Education, Jilin Agricultural University, 2888 Xincheng Street, Changchun, 130118, China
| | - Xue-Pan Sun
- College of Veterinary Medicine, College of Animal Science and Technology, Jilin Provincial Engineering Research Center of Animal Probiotics, Key Laboratory of Animal Production and Product Quality Safety of Ministry of Education, Jilin Agricultural University, 2888 Xincheng Street, Changchun, 130118, China
| | - Chun-Wei Shi
- College of Veterinary Medicine, College of Animal Science and Technology, Jilin Provincial Engineering Research Center of Animal Probiotics, Key Laboratory of Animal Production and Product Quality Safety of Ministry of Education, Jilin Agricultural University, 2888 Xincheng Street, Changchun, 130118, China
| | - Gui-Lian Yang
- College of Veterinary Medicine, College of Animal Science and Technology, Jilin Provincial Engineering Research Center of Animal Probiotics, Key Laboratory of Animal Production and Product Quality Safety of Ministry of Education, Jilin Agricultural University, 2888 Xincheng Street, Changchun, 130118, China
| | - Hai-Bin Huang
- College of Veterinary Medicine, College of Animal Science and Technology, Jilin Provincial Engineering Research Center of Animal Probiotics, Key Laboratory of Animal Production and Product Quality Safety of Ministry of Education, Jilin Agricultural University, 2888 Xincheng Street, Changchun, 130118, China
| | - Yan-Long Jiang
- College of Veterinary Medicine, College of Animal Science and Technology, Jilin Provincial Engineering Research Center of Animal Probiotics, Key Laboratory of Animal Production and Product Quality Safety of Ministry of Education, Jilin Agricultural University, 2888 Xincheng Street, Changchun, 130118, China
| | - Jian-Zhong Wang
- College of Veterinary Medicine, College of Animal Science and Technology, Jilin Provincial Engineering Research Center of Animal Probiotics, Key Laboratory of Animal Production and Product Quality Safety of Ministry of Education, Jilin Agricultural University, 2888 Xincheng Street, Changchun, 130118, China
| | - Xin Cao
- College of Veterinary Medicine, College of Animal Science and Technology, Jilin Provincial Engineering Research Center of Animal Probiotics, Key Laboratory of Animal Production and Product Quality Safety of Ministry of Education, Jilin Agricultural University, 2888 Xincheng Street, Changchun, 130118, China
| | - Nan Wang
- College of Veterinary Medicine, College of Animal Science and Technology, Jilin Provincial Engineering Research Center of Animal Probiotics, Key Laboratory of Animal Production and Product Quality Safety of Ministry of Education, Jilin Agricultural University, 2888 Xincheng Street, Changchun, 130118, China
| | - Yan Zeng
- College of Veterinary Medicine, College of Animal Science and Technology, Jilin Provincial Engineering Research Center of Animal Probiotics, Key Laboratory of Animal Production and Product Quality Safety of Ministry of Education, Jilin Agricultural University, 2888 Xincheng Street, Changchun, 130118, China
| | - Wen-Tao Yang
- College of Veterinary Medicine, College of Animal Science and Technology, Jilin Provincial Engineering Research Center of Animal Probiotics, Key Laboratory of Animal Production and Product Quality Safety of Ministry of Education, Jilin Agricultural University, 2888 Xincheng Street, Changchun, 130118, China.
| | - Chun-Feng Wang
- College of Veterinary Medicine, College of Animal Science and Technology, Jilin Provincial Engineering Research Center of Animal Probiotics, Key Laboratory of Animal Production and Product Quality Safety of Ministry of Education, Jilin Agricultural University, 2888 Xincheng Street, Changchun, 130118, China.
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Dutta AK, Gazi MS, Uddin SJ. A systemic review on medicinal plants and their bioactive constituents against avian influenza and further confirmation through in-silico analysis. Heliyon 2023; 9:e14386. [PMID: 36925514 PMCID: PMC10011005 DOI: 10.1016/j.heliyon.2023.e14386] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2022] [Revised: 02/26/2023] [Accepted: 03/03/2023] [Indexed: 03/11/2023] Open
Abstract
Background Avian influenza or more commonly known as bird flu is a widespread infectious disease in poultry. This review aims to accumulate information of different natural plant sources that can aid in combating this disease. Influenza virus (IV) is known for its ability to mutate and infect different species (including humans) and cause fatal consequences. Methods Total 33 plants and 4 natural compounds were identified and documented. Molecular docking was performed against the target viral protein neuraminidase (NA), with some plant based natural compounds and compared their results with standard drugs Oseltamivir and Zanamivir to obtain novel drug targets for influenza in chickens. Results It was seen that most extracts exhibit their action by interacting with viral hemagglutinin or neuraminidase and inhibit viral entry or release from the host cell. Some plants also interacted with the viral RNA replication or by reducing proinflammatory cytokines. Ethanol was mostly used for extraction. Among all the plants Theobroma cacao, Capparis Sinaica Veil, Androgarphis paniculate, Thallasodendron cillatum, Sinularia candidula, Larcifomes officinalis, Lenzites betulina, Datronia molis, Trametes gibbose exhibited their activity with least concentration (below 10 μg/ml). The dockings results showed that some natural compounds (5,7- dimethoxyflavone, Aloe emodin, Anthocyanins, Quercetin, Hemanthamine, Lyocrine, Terpenoid EA showed satisfactory binding affinity and binding specificity with viral neuraminidase compared to the synthetic drugs. Conclusion This review clusters up to date information of effective herbal plants to bolster future influenza treatment research in chickens. The in-silico analysis also suggests some potential targets for future drug development but these require more clinical analysis.
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Affiliation(s)
- Ashit Kumar Dutta
- Pharmacy Discipline, Life Science School, Khulna University, Khulna 9208, Bangladesh
| | - Md Shamim Gazi
- Biotechnology and Genetic Engineering Discipline, Life Science School, Khulna University, Khulna 9208, Bangladesh
| | - Shaikh Jamal Uddin
- Pharmacy Discipline, Life Science School, Khulna University, Khulna 9208, Bangladesh
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7
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Wu HDI, Lin RS, Hwang WH, Huang ML, Chen BJ, Yen TC, Chao DY. Integrating Citizen Scientist Data into the Surveillance System for Avian Influenza Virus, Taiwan. Emerg Infect Dis 2023; 29:45-53. [PMID: 36573518 PMCID: PMC9796195 DOI: 10.3201/eid2901.220659] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022] Open
Abstract
The continuing circulation and reassortment with low-pathogenicity avian influenza Gs/Gd (goose/Guangdong/1996)-like avian influenza viruses (AIVs) has caused huge economic losses and raised public health concerns over the zoonotic potential. Virologic surveillance of wild birds has been suggested as part of a global AIV surveillance system. However, underreporting and biased selection of sampling sites has rendered gaining information about the transmission and evolution of highly pathogenic AIV problematic. We explored the use of the Citizen Scientist eBird database to elucidate the dynamic distribution of wild birds in Taiwan and their potential for AIV exchange with domestic poultry. Through the 2-stage analytical framework, we associated nonignorable risk with 10 species of wild birds with >100 significant positive results. We generated a risk map, which served as the guide for highly pathogenic AIV surveillance. Our methodologic blueprint has the potential to be incorporated into the global AIV surveillance system of wild birds.
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Liao SC, Lyu PX, Shen SY, Hsiao CC, Lien CY, Wang SD, Lin TY, Tu PA. Effects of Swimming Pool Conditions and Floor Types on White Roman Geese's Physical Condition Scores and Behaviors in an Indoor Rearing System. Animals (Basel) 2022; 12:ani12233273. [PMID: 36496793 PMCID: PMC9740521 DOI: 10.3390/ani12233273] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2022] [Revised: 11/22/2022] [Accepted: 11/22/2022] [Indexed: 11/27/2022] Open
Abstract
Biosecurity problems, including the continual risk of avian influenza spread by wild birds, have severely affected traditional free-range waterfowl production systems. Regulations and techniques for indoor goose production require more considerations for animal welfare. This study investigated the effects of swimming pool conditions and different floor types on the physical condition scores and behaviors of indoor-reared White Roman geese. A total of 48 male and 48 female White Roman geese reared from the age of 15 to 84 days were randomly allocated to pens with or without a swimming pool and with either mud or perforated plastic floors. Providing a swimming pool improved geese's eye and feather cleanliness and breast blister scores at the age of 84 days. Compared with geese reared on a mud floor, those reared on a perforated plastic floor had better feather cleanliness and higher breast blister scores at the age of 56 and 84 days. Providing a swimming pool to indoor-reared geese may reduce the proportion of abnormal behaviors, such as injurious feather pecking, by increasing water-related behaviors. This study suggests a more appropriate environment design for better balancing commercial goose production with animal welfare in an indoor rearing system.
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Affiliation(s)
- Shih-Chieh Liao
- Changhua Animal Propagation Station, Livestock Research Institute, Council of Agriculture, Changhua 512, Taiwan
| | - Pei-Xuan Lyu
- Changhua Animal Propagation Station, Livestock Research Institute, Council of Agriculture, Changhua 512, Taiwan
| | - Shih-Yi Shen
- Changhua Animal Propagation Station, Livestock Research Institute, Council of Agriculture, Changhua 512, Taiwan
| | - Chih-Chang Hsiao
- Changhua Animal Propagation Station, Livestock Research Institute, Council of Agriculture, Changhua 512, Taiwan
| | - Ching-Yi Lien
- Changhua Animal Propagation Station, Livestock Research Institute, Council of Agriculture, Changhua 512, Taiwan
| | - Sheng-Der Wang
- Changhua Animal Propagation Station, Livestock Research Institute, Council of Agriculture, Changhua 512, Taiwan
| | - Tsung-Yi Lin
- Livestock Research Institute, Council of Agriculture, Tainan 71246, Taiwan
| | - Po-An Tu
- Hsinchu Branch, Livestock Research Institute, Council of Agriculture, Miaoli 36848, Taiwan
- Correspondence: ; Tel.: +886-37-911696
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Chung YT, Kuan CY, Liao GR, Albrecht RA, Tseng YY, Hsu YC, Ou SC, Hsu WL. A variant NS1 protein from H5N2 avian influenza virus suppresses PKR activation and promotes replication and virulence in mammals. Emerg Microbes Infect 2022; 11:2291-2303. [PMID: 35979918 PMCID: PMC9559317 DOI: 10.1080/22221751.2022.2114853] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/04/2022]
Abstract
Highly pathogenic avian influenza viruses (HPAIVs) frequently receive global attention as threats to public health. The NS1 protein is a key virulence factor known to impair host antiviral responses. The study herein revealed HPAIV H5N2 NS gene encoded additional protein; a truncated NS1 variant, designated NS3, produced by alternative splicing of the NS transcript. To examine the function of NS3 during infection, we generated recombinant viruses expressing either full-length NS1 (RG-AIV-T375G) or NS3 (RG-AIV-NS3). Interestingly, RG-AIV-NS3 virus produced higher titres than RG-AIV-T375G in multiple mammalian cell lines. However, RG-AIV-T375G exhibited a replication advantage over RG-AIV-NS3 in chicken DF-1 cells, indicating that host cell identity dictates the effect of NS3 on viral replication. In mice and mammalian cells, RG-AIV-NS3 infection elicited higher level of cytokines, including IFN-β, MX and TNF-α, potentially due to its higher replication activity. Based on mini-genome assay, NS3 had pronounced effects on viral replication machinery. Surprisingly, NS3 retained an interaction with PKR and suppressed PKR activation despite its lack of amino-acid residues 126-167. The poor replication ability of RG-AIV-T375G was partially restored in cells deficient in PKR suggesting that full-length NS1 may be insufficient to suppress PKR function. Notably, virulence of the full-length NS1-expressing RG-AIV-T375G virus was highly attenuated in mice when compared to RG-AIV-NS3. In summary, our study reveals the existence and function of a previously unidentified H5N2 viral protein, NS3. We found that NS3 is functionally distinct from NS1 protein, as it enhances viral replication and pathogenicity in mammalian systems, potentially via suppression of PKR activity.
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Affiliation(s)
- Yun-Ting Chung
- Graduate Institute of Microbiology and Public Health, National Chung Hsing University, Taichung, Taiwan
| | - Chih-Ying Kuan
- Graduate Institute of Microbiology and Public Health, National Chung Hsing University, Taichung, Taiwan
| | - Guan-Ru Liao
- Graduate Institute of Microbiology and Public Health, National Chung Hsing University, Taichung, Taiwan
| | - Randy A Albrecht
- Department of Microbiology, Global Health and Emerging Pathogens Institute, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Yeu-Yang Tseng
- WHO Collaborating Centre for Reference and Research on Influenza, VIDRL, Peter Doherty Institute for Infection and Immunity, University of Melbourne, Melbourne, Victoria, Australia
| | - Yu-Chen Hsu
- Graduate Institute of Microbiology and Public Health, National Chung Hsing University, Taichung, Taiwan
| | - Shan-Chia Ou
- Graduate Institute of Microbiology and Public Health, National Chung Hsing University, Taichung, Taiwan
| | - Wei-Li Hsu
- Graduate Institute of Microbiology and Public Health, National Chung Hsing University, Taichung, Taiwan
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Aji D, Chang N, Zhang C, Du F, Li J, Yun F, Shi W, Bi Y, Ma Z. Rapid Emergence of the Reassortant 2.3.4.4b H5N2 Highly Pathogenic Avian Influenza Viruses in a Live Poultry Market in Xinjiang, Northwest China. Avian Dis 2021; 65:578-583. [DOI: 10.1637/aviandiseases-d-21-00075] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2021] [Accepted: 10/12/2021] [Indexed: 11/05/2022]
Affiliation(s)
- Dilihuma Aji
- Xinjiang Key Laboratory of Biological Resources and Genetic Engineering, College of Life Science and Technology, Xinjiang University, Urumqi 830046, China
| | - Nana Chang
- Xinjiang Key Laboratory of Biological Resources and Genetic Engineering, College of Life Science and Technology, Xinjiang University, Urumqi 830046, China
| | - Cheng Zhang
- Xinjiang Key Laboratory of Biological Resources and Genetic Engineering, College of Life Science and Technology, Xinjiang University, Urumqi 830046, China
| | - Fei Du
- Xinjiang Key Laboratory of Biological Resources and Genetic Engineering, College of Life Science and Technology, Xinjiang University, Urumqi 830046, China
| | - Juan Li
- Key Laboratory of Etiology and Emerging infections Disease in Shandong First Medical University, Tai an 271016, China
| | - Fengze Yun
- Xinjiang Key Laboratory of Biological Resources and Genetic Engineering, College of Life Science and Technology, Xinjiang University, Urumqi 830046, China
| | - Weifeng Shi
- Key Laboratory of Etiology and Emerging infections Disease in Shandong First Medical University, Tai an 271016, China
| | - Yuhai Bi
- Xinjiang Key Laboratory of Biological Resources and Genetic Engineering, College of Life Science and Technology, Xinjiang University, Urumqi 830046, China
| | - Zhenghai Ma
- Xinjiang Key Laboratory of Biological Resources and Genetic Engineering, College of Life Science and Technology, Xinjiang University, Urumqi 830046, China
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11
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Two-stage algorithms for visually exploring spatio-temporal clustering of avian influenza virus outbreaks in poultry farms. Sci Rep 2021; 11:22553. [PMID: 34799568 PMCID: PMC8604947 DOI: 10.1038/s41598-021-01207-4] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2021] [Accepted: 10/25/2021] [Indexed: 11/17/2022] Open
Abstract
The development of visual tools for the timely identification of spatio-temporal clusters will assist in implementing control measures to prevent further damage. From January 2015 to June 2020, a total number of 1463 avian influenza outbreak farms were detected in Taiwan and further confirmed to be affected by highly pathogenic avian influenza subtype H5Nx. In this study, we adopted two common concepts of spatio-temporal clustering methods, the Knox test and scan statistics, with visual tools to explore the dynamic changes of clustering patterns. Since most (68.6%) of the outbreak farms were detected in 2015, only the data from 2015 was used in this study. The first two-stage algorithm performs the Knox test, which established a threshold of 7 days and identified 11 major clusters in the six counties of southwestern Taiwan, followed by the standard deviational ellipse (SDE) method implemented on each cluster to reveal the transmission direction. The second algorithm applies scan likelihood ratio statistics followed by AGC index to visualize the dynamic changes of the local aggregation pattern of disease clusters at the regional level. Compared to the one-stage aggregation approach, Knox-based and AGC mapping were more sensitive in small-scale spatio-temporal clustering.
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12
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Yeo SJ, Hoang VT, Duong TB, Nguyen NM, Tuong HT, Azam M, Sung HW, Park H. Emergence of a Novel Reassortant H5N3 Avian Influenza Virus in Korean Mallard Ducks in 2018. Intervirology 2021; 65:1-16. [PMID: 34438407 DOI: 10.1159/000517057] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2020] [Accepted: 04/29/2021] [Indexed: 11/19/2022] Open
Abstract
INTRODUCTION The avian influenza (AI) virus causes a highly contagious disease which is common in wild and domestic birds and sporadic in humans. Mutations and genetic reassortments among the 8 negative-sense RNA segments of the viral genome alter its pathogenic potential, demanding well-targeted, active surveillance for infection control. METHODS Wild duck fecal samples were collected during the 2018 bird health annual surveillance in South Korea for tracking variations of the AI virus. One low-pathogenic avian influenza H5N3 reassortment virus (A/mallard duck/South Korea/KNU18-91/2018 [H5N3]) was isolated and genomically characterized by phylogenetic and molecular analyses in this study. RESULTS It was devoid of polybasic amino acids at the hemagglutinin (HA) cleavage site and exhibited a stalk region without deletion in the neuraminidase (NA) gene and NA inhibitor resistance-linked E/D627K/N and D701N marker mutations in the PB2 gene, suggesting its low-pathogenic AI. It showed a potential of a reassortment where only HA originated from the H5N3 poultry virus of China and other genes were derived from Mongolia. In phylogenetic analysis, HA was different from that of the isolate of H5N3 in Korea, 2015. In addition, this novel virus showed adaptation in Madin-Darby canine kidney cells, with 8.05 ± 0.14 log10 50% tissue culture infectious dose (TCID50) /mL at 36 h postinfection. However, it could not replicate in mice well, showing positive growth at 3 days postinfection (dpi) (2.1 ± 0.13 log10 TCID50/mL) but not at 6 dpi. CONCLUSIONS The HA antigenic relationship of A/mallard duck/South Korea/KNU18-91/2018 (H5N3) showed differences toward one of the old low-pathogenic H5N3 viruses in Korea. These results indicated that a novel reassortment low-pathogenic avian influenza H5N3 subtype virus emerged in South Korea in 2018 via novel multiple reassortments with Eurasian viruses, rather than one of old Korean H5N3 strains.
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Affiliation(s)
- Seon-Ju Yeo
- Department of Tropical Medicine and Parasitology, Seoul National University College of Medicine, Seoul, Republic of Korea,
| | - Vui Thi Hoang
- Department of Infection Biology, Zoonosis Research Center, School of Medicine, Wonkwang University, Iksan, Republic of Korea
| | - Tuan Bao Duong
- Department of Infection Biology, Zoonosis Research Center, School of Medicine, Wonkwang University, Iksan, Republic of Korea
| | - Ngoc Minh Nguyen
- Department of Infection Biology, Zoonosis Research Center, School of Medicine, Wonkwang University, Iksan, Republic of Korea
| | - Hien Thi Tuong
- Department of Infection Biology, Zoonosis Research Center, School of Medicine, Wonkwang University, Iksan, Republic of Korea
| | - Mudsser Azam
- Department of Infection Biology, Zoonosis Research Center, School of Medicine, Wonkwang University, Iksan, Republic of Korea
| | - Haan Woo Sung
- College of Veterinary Medicine, Kangwon National University, Chuncheon, Republic of Korea
| | - Hyun Park
- Department of Infection Biology, Zoonosis Research Center, School of Medicine, Wonkwang University, Iksan, Republic of Korea
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13
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Effects of Different Swimming Pool Conditions and Floor Types on Growth Performance and Footpad Dermatitis in Indoor-Reared White Roman Geese. Animals (Basel) 2021; 11:ani11061705. [PMID: 34200474 PMCID: PMC8228599 DOI: 10.3390/ani11061705] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2021] [Revised: 06/03/2021] [Accepted: 06/05/2021] [Indexed: 12/13/2022] Open
Abstract
Simple Summary The goose industry provides meat and down to the food and textile processing industry and is the third-largest poultry industry in Taiwan after the chicken and duck industries. After the avian influenza virus (HPAIV) pandemic in 2015, most poultry farms in Taiwan have been restricted to closed birdhouses to improve biosafety. However, indoor-raised poultry may experience footpad dermatitis problems. We studied the effects of providing a swimming pool and different floor types on the growth performance and footpad dermatitis score for indoor-reared White Roman geese to reduce the risk of footpad dermatitis. Our data indicated that the incidence of footpad dermatitis was decreased during the feeding period in geese supplied with a swimming pool. Our findings may help improve animal welfare in modern waterfowl production by having the geese express their natural behaviors with water. Abstract Footpad dermatitis (FPD) is a major foot disease in modern poultry production, and it affects both poultry health and animal welfare. It refers to inflammation and necrotizing lesions on the plantar surface of the footpads and toes. We investigated the effects of providing a swimming pool and different floor types on growth performance and FPD score in indoor-reared White Roman geese. Forty-eight male and 48 female White Roman geese were randomly allocated to pens with or without a swimming pool and with either mud or perforated plastic floor and reared from 15 to 84 days of age. Growth performance measurements included feed intake (FI), weight gain (WG), and feed conversion ratio (FCR). FI, WG, and FCR were significantly decreased at various growth periods in geese provided with a pool. Lower WG and bodyweight for the perforated plastic floor group were found at 15–28 and 28 days of age, respectively. The geese reared on the perforated plastic floors without a pool had higher FPD scores at 70 and 84 days of age than those with other rearing conditions. A higher incidence of FPD score 1 was observed in geese raised without a pool. In conclusion, providing a pool can improve footpad health in indoor-reared White Roman geese but may not benefit growth performance.
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14
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Comparison of Chicken Immune Responses after Inoculation with H5 Avian Influenza Virus-like Particles Produced by Insect Cells or Pupae. J Vet Res 2021; 65:139-145. [PMID: 34250297 PMCID: PMC8256473 DOI: 10.2478/jvetres-2021-0026] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2020] [Accepted: 04/26/2021] [Indexed: 11/21/2022] Open
Abstract
Introduction Novel clade 2.3.4.4 H5 highly pathogenic avian influenza virus (HPAIV) outbreaks have occurred since early 2015 in Taiwan and impacted the island economically, like they have many countries. This research investigates the immunogenicity of two HPAIV-like particles to assess their promise as vaccine candidates. Material and Methods The haemagglutinin (HA) gene derived from clade 2.3.4.4 H5 HPAIV and matrix protein 1 (M1) gene were cloned into the pFastBac Dual baculovirus vector. The resulting recombinant viruses were expressed in Spodoptera frugiperda moth (Sf)21 cells and silkworm pupae to generate Sf21 virus-like particles (VLP) and silkworm pupa VLP. Two-week-old specific pathogen–free chickens were immunised and their humoral and cellular immune responses were analysed. Results The silkworm pupa VLP had higher haemagglutination competence. Both VLP types elicited haemagglutination inhibition antibodies, anti-HA antibodies, splenic interferon gamma (IFN-γ) and interleukin 4 (IL-4) mRNA expression, and CD4+/CD8+ ratio elevation. However, chickens receiving silkworm pupa VLP exhibited a significantly higher anti-HA antibody titre in ELISA after vaccination. Although Sf21 VLP recipients expressed more IFN-γ and IL-4, the increase in IFN-γ did not significantly raise the CD4+/CD8+ ratio and the increase in IL-4 did not promote anti-HA antibodies. Conclusion Both VLP systems possess desirable immunogenicity in vivo. However, in respect of immunogenic efficacy and the production cost, pupa VLP may be the superior vaccine candidate against clade 2.3.4.4 H5 HPAIV infection.
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15
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Huang CW, Chen LH, Lee DH, Liu YP, Li WC, Lee MS, Chen YP, Lee F, Chiou CJ, Lin YJ. Evolutionary history of H5 highly pathogenic avian influenza viruses (clade 2.3.4.4c) circulating in Taiwan during 2015-2018. INFECTION GENETICS AND EVOLUTION 2021; 92:104885. [PMID: 33932612 DOI: 10.1016/j.meegid.2021.104885] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/02/2021] [Revised: 04/20/2021] [Accepted: 04/24/2021] [Indexed: 12/13/2022]
Abstract
The highly pathogenic avian influenza (HPAI) virus A/goose/Guangdong/1/96 H5N1 (Gs/GD) lineage has been transmitted globally and has caused deaths in wild birds, poultry, and humans. Clade 2.3.4.4c, one of the subclades of the Gs/GD lineage, spread through Taiwan in late 2014 and become an endemic virus. We analyzed 239 newly sequenced HPAI clade H5Nx isolates to explore the phylogenetic relationships, divergence times, and evolutionary history of Taiwan HPAI H5Nx viruses from 2015 to 2018. Overall, 15 reassortant genotypes were identified among H5N2, H5N3, and H5N8 viruses. Maximum likelihood and Bayesian phylogenies based on homologous hemagglutinin (HA) and matrix protein (MP) genes suggest that Taiwan HPAI H5Nx viruses share a most recent common ancestor that has diversified since October 2014 and is closely related to two HPAI H5N8 viruses identified from wild birds in Japan. Two waves of HPAI caused by multiple reassortants were identified, the first occurring in late 2014 and the second beginning in late 2016. The first wave consisted of seven H5Nx reassortants that spread through Taiwan. In the second wave, eight novel reassortants were detected which had newly introduced internal genes, mostly derived from the avian influenza virus gene pool maintained in wild birds in Asia. Phylodynamic reconstruction using the Bayesian Skygrid model revealed varied fluctuating patterns of relative genetic diversity among reassortants. The mean evolutionary rate also varied among reassortants and subtypes. The neuraminidase (NA) gene evolved faster than the HA gene in H5N2 viruses, while HA evolved faster than NA in H5N8 viruses. The HA mean evolutionary rate ranged from 6.10 × 10-3 to 7.73 × 10-3 and from 5.81 × 10-3 to 9.45 × 10-3 substitutions/site/year for H5N2 and H5N8 viruses, respectively. The continuous circulation of HPAI H5Nx variants and the emergence of novel reassortants in Taiwan highlight that the surveillance, biosecurity, and management systems of poultry farms need to be improved and carefully executed.
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Affiliation(s)
- Chih-Wei Huang
- Animal Health Research Institute, Council of Agriculture, New Taipei City, Taiwan.
| | - Li-Hsuan Chen
- Animal Health Research Institute, Council of Agriculture, New Taipei City, Taiwan.
| | - Dong-Hun Lee
- Department of Pathobiology and Veterinary Science, University of Connecticut, Storrs, CT, USA.
| | - Yu-Pin Liu
- Animal Health Research Institute, Council of Agriculture, New Taipei City, Taiwan.
| | - Wan-Chen Li
- Animal Health Research Institute, Council of Agriculture, New Taipei City, Taiwan.
| | - Ming-Shiuh Lee
- Animal Health Research Institute, Council of Agriculture, New Taipei City, Taiwan.
| | - Yen-Ping Chen
- Animal Health Research Institute, Council of Agriculture, New Taipei City, Taiwan.
| | - Fan Lee
- Animal Health Research Institute, Council of Agriculture, New Taipei City, Taiwan.
| | - Chwei-Jang Chiou
- Animal Health Research Institute, Council of Agriculture, New Taipei City, Taiwan.
| | - Yu-Ju Lin
- Animal Health Research Institute, Council of Agriculture, New Taipei City, Taiwan.
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16
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Shih PW, Chan TC, King CC. Risk mapping of highly pathogenic avian influenza H5 during 2012-2017 in Taiwan with spatial bayesian modelling: Implications for surveillance and control policies. Transbound Emerg Dis 2021; 69:385-395. [PMID: 33452860 DOI: 10.1111/tbed.13991] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2020] [Revised: 01/08/2021] [Accepted: 01/11/2021] [Indexed: 11/30/2022]
Abstract
During 2012-2017, a total of 1,144 highly pathogenic avian influenza (HPAI) H5 outbreaks were reported in Taiwan. We conjectured the current 3-km radius of the post-outbreak containment policy could fail to effectively alleviate the current ongoing epidemics of HPAI H5 in Taiwan. The high intensity of localized transmission of HPAI H5 at certain focal hotspots was identified to follow the spatial distribution of poultry-raising locations through our hotspot analyses on the HPAI H5 outbreak locations from 2015 to 2017. We then applied 3-, 5- and 7-km circular buffer zones to 15,444 registered poultry-raising locations to inspect the characteristics of the poultry-raising neighbourhood. Three spatial regression models using Bayesian inference were established to infer the risks attributable to poultry-raising characteristics in the corresponding buffer areas. The different buffer radii were treated as a sensitivity analysis of the influential range of neighbouring farms on the HPAI H5 outbreak occurrence, so as to evaluate the effective radius for post-outbreak containment. Evidence showed that the risks of outbreak occurrence were associated with increasing numbers of poultry-raising locations in both 3-km (relative risk [RR] 1.005, 95% confidence interval [CI] 1.002-1.008) and 5-km buffer areas (RR 1.005, 95% CI 1.004-1.007), whereas in the 7-km buffer model, no association between densely populated locations and increasing risks of outbreaks was observed (RR 1.000, 95% CI 0.999-1.001). Therefore, an extension to a 7-km radius for the post-outbreak containment policy (rather than a 3-km radius as in the current policy) is recommended to effectively mitigate further spreading of HPAI H5 outbreaks among neighbouring farms. Overall, we demonstrated that the densely populated locations with multiple poultry species raised in proximity as defined with 3-, 5- and 7-km buffer areas facilitated H5 HPAI outbreak diffusion and shaped the scale of HPAI H5 epidemics in Taiwan.
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Affiliation(s)
- Pin-Wei Shih
- Institute of Epidemiology and Preventive Medicine, College of Public Health, National Taiwan University, Taipei, Taiwan
| | - Ta-Chien Chan
- Research Center for Humanities and Social Sciences, Academia Sinica, Taipei, Taiwan
| | - Chwan-Chuen King
- Institute of Epidemiology and Preventive Medicine, College of Public Health, National Taiwan University, Taipei, Taiwan
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17
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Haveri A, Ikonen N, Savolainen-Kopra C, Julkunen I. Long-lasting heterologous antibody responses after sequential vaccination with A/Indonesia/5/2005 and A/Vietnam/1203/2004 pre-pandemic influenza A(H5N1) virus vaccines. Vaccine 2020; 39:402-411. [PMID: 33246672 DOI: 10.1016/j.vaccine.2020.11.041] [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: 05/09/2020] [Revised: 11/04/2020] [Accepted: 11/13/2020] [Indexed: 12/20/2022]
Abstract
BACKGROUND Avian influenza A(H5N1) viruses have caused sporadic infections in humans and thus they pose a significant global health threat. Among symptomatic patients the case fatality rate has been ca. 50%. H5N1 viruses exist in multiple clades and subclades and several candidate vaccines have been developed to prevent A(H5N1) infection as a principal measure for preventing the disease. METHODS Serum antibodies against various influenza A(H5N1) clade viruses were measured in adults by ELISA-based microneutralization and haemagglutination inhibition tests before and after vaccination with two different A(H5N1) vaccines in 2009 and 2011. RESULTS Two doses of AS03-adjuvanted A/Indonesia/5/2005 vaccine induced good homologous but poor heterologous neutralizing antibody responses against different clade viruses. However, non-adjuvanted A/Vietnam/1203/2004 booster vaccination in 2011 induced very strong and long-lasting homologous and heterologous antibody responses while homologous response remained weak in naïve subjects. CONCLUSIONS Sequential vaccination with two different A(H5N1) pre-pandemic vaccines induced long-lasting high level cross-clade immunity against influenza A(H5N1) strains, thus supporting a prime-boost vaccination strategy in pandemic preparedness plans.
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Affiliation(s)
- Anu Haveri
- Expert Microbiology Unit, Department of Health Security, Finnish Institute for Health and Welfare (THL), POB 30, 00271 Helsinki, Finland.
| | - Niina Ikonen
- Expert Microbiology Unit, Department of Health Security, Finnish Institute for Health and Welfare (THL), POB 30, 00271 Helsinki, Finland
| | - Carita Savolainen-Kopra
- Expert Microbiology Unit, Department of Health Security, Finnish Institute for Health and Welfare (THL), POB 30, 00271 Helsinki, Finland
| | - Ilkka Julkunen
- Expert Microbiology Unit, Department of Health Security, Finnish Institute for Health and Welfare (THL), POB 30, 00271 Helsinki, Finland; Institute of Biomedicine, University of Turku and Turku University Hospital, Kiinamyllynkatu 10, 20520 Turku, Finland
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18
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Sriwilaijaroen N, Suzuki Y. Host Receptors of Influenza Viruses and Coronaviruses-Molecular Mechanisms of Recognition. Vaccines (Basel) 2020; 8:E587. [PMID: 33036202 PMCID: PMC7712180 DOI: 10.3390/vaccines8040587] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2020] [Revised: 09/29/2020] [Accepted: 09/30/2020] [Indexed: 12/19/2022] Open
Abstract
Among the four genera of influenza viruses (IVs) and the four genera of coronaviruses (CoVs), zoonotic αIV and βCoV have occasionally caused airborne epidemic outbreaks in humans, who are immunologically naïve, and the outbreaks have resulted in high fatality rates as well as social and economic disruption and losses. The most devasting influenza A virus (IAV) in αIV, pandemic H1N1 in 1918, which caused at least 40 million deaths from about 500 million cases of infection, was the first recorded emergence of IAVs in humans. Usually, a novel human-adapted virus replaces the preexisting human-adapted virus. Interestingly, two IAV subtypes, A/H3N2/1968 and A/H1N1/2009 variants, and two lineages of influenza B viruses (IBV) in βIV, B/Yamagata and B/Victoria lineage-like viruses, remain seasonally detectable in humans. Both influenza C viruses (ICVs) in γIV and four human CoVs, HCoV-229E and HCoV-NL63 in αCoV and HCoV-OC43 and HCoV-HKU1 in βCoV, usually cause mild respiratory infections. Much attention has been given to CoVs since the global epidemic outbreaks of βSARS-CoV in 2002-2004 and βMERS-CoV from 2012 to present. βSARS-CoV-2, which is causing the ongoing COVID-19 pandemic that has resulted in 890,392 deaths from about 27 million cases of infection as of 8 September 2020, has provoked worldwide investigations of CoVs. With the aim of developing efficient strategies for controlling virus outbreaks and recurrences of seasonal virus variants, here we overview the structures, diversities, host ranges and host receptors of all IVs and CoVs and critically review current knowledge of receptor binding specificity of spike glycoproteins, which mediates infection, of IVs and of zoonotic, pandemic and seasonal CoVs.
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Affiliation(s)
- Nongluk Sriwilaijaroen
- Department of Preclinical Sciences, Faculty of Medicine, Thammasat University, Pathumthani 12120, Thailand
- School of Pharmaceutical Sciences, University of Shizuoka, Shizuoka, Shizuoka 422-8526, Japan
| | - Yasuo Suzuki
- School of Pharmaceutical Sciences, University of Shizuoka, Shizuoka, Shizuoka 422-8526, Japan
- College of Life and Health Sciences, Chubu University, Kasugai, Aichi 487-8501, Japan
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19
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Tsai SK, Chen CC, Lin HJ, Lin HY, Chen TT, Wang LC. Combination of multiplex reverse transcription recombinase polymerase amplification assay and capillary electrophoresis provides high sensitive and high-throughput simultaneous detection of avian influenza virus subtypes. J Vet Sci 2020; 21:e24. [PMID: 32233132 PMCID: PMC7113572 DOI: 10.4142/jvs.2020.21.e24] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2019] [Revised: 10/25/2019] [Accepted: 12/30/2019] [Indexed: 11/20/2022] Open
Abstract
The pandemic of avian influenza viruses (AIVs) in Asia has caused enormous economic loss in poultry industry and human health threat, especially clade 2.3.4.4 H5 and H7 subtypes in recent years. The endemic chicken H6 virus in Taiwan has also brought about human and dog infections. Since wild waterfowls is the major AIV reservoir, it is important to monitor the diversified subtypes in wildfowl flocks in early stage to prevent viral reassortment and transmission. To develop a more efficient and sensitive approach is a key issue in epidemic control. In this study, we integrate multiplex reverse transcription recombinase polymerase amplification (RT-RPA) and capillary electrophoresis (CE) for high-throughput detection and differentiation of AIVs in wild waterfowls in Taiwan. Four viral genes were detected simultaneously, including nucleoprotein (NP) gene of all AIVs, hemagglutinin (HA) gene of clade 2.3.4.4 H5, H6 and H7 subtypes. The detection limit of the developed detection system could achieve as low as one copy number for each of the four viral gene targets. Sixty wild waterfowl field samples were tested and all of the four gene signals were unambiguously identified within 6 h, including the initial sample processing and the final CE data analysis. The results indicated that multiplex RT-RPA combined with CE was an excellent alternative for instant simultaneous AIV detection and subtype differentiation. The high efficiency and sensitivity of the proposed method could greatly assist in wild bird monitoring and epidemic control of poultry.
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Affiliation(s)
- Shou Kuan Tsai
- Department of Bioscience and Biotechnology, National Taiwan Ocean University, Keelung 20224, Taiwan
| | - Chen Chih Chen
- Institute of Wildlife Conservation, College of Veterinary Medicine, National Pingtung University of Science and Technology, Pingtung 91201, Taiwan.,Animal Biologics Pilot Production Center, National Pingtung University of Science and Technology, Pingtung 91201, Taiwan
| | - Han Jia Lin
- Department of Bioscience and Biotechnology, National Taiwan Ocean University, Keelung 20224, Taiwan
| | - Han You Lin
- School of Veterinary Medicine, National Taiwan University, Taipei 10617, Taiwan
| | - Ting Tzu Chen
- School of Veterinary Medicine, National Taiwan University, Taipei 10617, Taiwan
| | - Lih Chiann Wang
- School of Veterinary Medicine, National Taiwan University, Taipei 10617, Taiwan.
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20
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Liang WS, He YC, Wu HD, Li YT, Shih TH, Kao GS, Guo HY, Chao DY. Ecological factors associated with persistent circulation of multiple highly pathogenic avian influenza viruses among poultry farms in Taiwan during 2015-17. PLoS One 2020; 15:e0236581. [PMID: 32790744 PMCID: PMC7425926 DOI: 10.1371/journal.pone.0236581] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2020] [Accepted: 07/08/2020] [Indexed: 11/21/2022] Open
Abstract
Emergence and intercontinental spread of highly pathogenic avian influenza A (HPAI) H5Nx virus clade 2.3.4.4 has resulted in substantial economic losses to the poultry industry in Asia, Europe, and North America. The long-distance migratory birds have been suggested to play a major role in the global spread of avian influenza viruses during this wave of panzootic outbreaks since 2013. Poultry farm epidemics caused by multiple introduction of different HPAI novel subtypes of clade 2.3.4.4 viruses also occurred in Taiwan between 2015 and 2017. The mandatory and active surveillance detected H5N3 and H5N6 circulation in 2015 and 2017, respectively, while H5N2 and H5N8 were persistently identified in poultry farms since their first arrival in 2015. This study intended to assess the importance of various ecological factors contributed to the persistence of HPAI during three consecutive years. We used satellite technology to identify the location of waterfowl flocks. Four risk factors consistently showed strong association with the spatial clustering of H5N2 and H5N8 circulations during 2015 and 2017, including high poultry farm density (aOR:17.46, 95%CI: 5.91–74.86 and 8.23, 95% CI: 2.12–54.86 in 2015 and 2017, respectively), poultry heterogeneity index (aOR of 12.28, 95%CI: 5.02–31.14 and 2.79, 95%CI: 1.00–7.69, in 2015 and 2017, respectively), non-registered waterfowl flock density (aOR: 6.8, 95%CI: 3.41–14.46 and 9.17, 95%CI: 3.73–26.20, in 2015 and 2017, respectively) and higher percentage of cropping land coverage (aOR of 1.36, 95%CI: 1.10–1.69 and 1.04, 95%CI: 1.02–1.07, in 2015 and 2017, respectively). Our study highlights the application of remote sensing and clustering analysis for the identification and characterization of environmental factors in facilitating and contributing to the persistent circulation of certain subtypes of H5Nx in poultry farms in Taiwan.
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Affiliation(s)
- Wei-Shan Liang
- Graduate Institute of Microbiology and Public Health, College of Veterinary Medicine, National Chung-Hsing University, Taichung, Taiwan
| | - Yu-Chen He
- Graduate Institute of Microbiology and Public Health, College of Veterinary Medicine, National Chung-Hsing University, Taichung, Taiwan
| | - Hong-Dar Wu
- Institute of statistics, National Chung Hsing University, Taichung, Taiwan
| | - Yao-Tsun Li
- Program in Emerging Infectious Diseases, Duke-NUS Medical School, Singapore, Singapore
| | - Tai-Hwa Shih
- Bureau of Animal and Plant Health Inspection and Quarantine (BAPHIQ), Taipei, Taiwan
| | - Gour-Shenq Kao
- Bureau of Animal and Plant Health Inspection and Quarantine (BAPHIQ), Taipei, Taiwan
| | - Horng-Yuh Guo
- Division of Agricultural Chemistry, Taiwan Agriculture Research Institute (TARI), Council of Agriculture, Taichung, Taiwan
| | - Day-Yu Chao
- Graduate Institute of Microbiology and Public Health, College of Veterinary Medicine, National Chung-Hsing University, Taichung, Taiwan
- * E-mail:
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21
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Jang Y, Seo SH. Age-Dependent Lethality in Ducks Caused by Highly Pathogenic H5N6 Avian Influenza Virus. Viruses 2020; 12:v12060591. [PMID: 32485904 PMCID: PMC7354466 DOI: 10.3390/v12060591] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2020] [Revised: 05/16/2020] [Accepted: 05/26/2020] [Indexed: 01/02/2023] Open
Abstract
Ducks show notably higher resistance to highly pathogenic avian influenza viruses as compared to chickens. Here, we studied the age-dependent susceptibility in ducks to the infections caused by highly pathogenic avian influenza viruses. We intranasally infected ducks aged 1, 2, 4, and 8 weeks with highly pathogenic H5N6 avian influenza viruses isolated in South Korea in 2016. All the 1-and 2-week-old ducks died after infection, 20% of 3-week-old ducks died, and from the ducks aged 4 and 8 weeks, all of them survived. We performed microarray analysis and quantitative real-time PCR using total RNA isolated from the lungs of infected 2- and 4-week-old ducks to determine the mechanism underlying the age-dependent susceptibility to highly pathogenic avian influenza virus. Limited genes were found to be differentially expressed between the lungs of 2- and 4-week-old ducks. Cell damage-related genes, such as CIDEA and ND2, and the immune response-related gene NR4A3 were notably induced in the lungs of infected 2-week-old ducks compared to those in the lungs of infected 4-week-old ducks.
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Affiliation(s)
- Yunyueng Jang
- Laboratory of Influenza Research and College of Veterinary Medicine, Chungnam National University, Daejeon 34134, Korea;
- Institute of Influenza Virus, Chungnam National University, Daejeon 34134, Korea
| | - Sang Heui Seo
- Laboratory of Influenza Research and College of Veterinary Medicine, Chungnam National University, Daejeon 34134, Korea;
- Institute of Influenza Virus, Chungnam National University, Daejeon 34134, Korea
- Correspondence: ; Tel.: +82-42-821-7819; Fax: +82-42-821-6762
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22
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Wang WC, Kuan CY, Tseng YJ, Chang CH, Liu YC, Chang YC, Hsu YC, Hsieh MK, Ou SC, Hsu WL. The Impacts of Reassortant Avian Influenza H5N2 Virus NS1 Proteins on Viral Compatibility and Regulation of Immune Responses. Front Microbiol 2020; 11:280. [PMID: 32226416 PMCID: PMC7080822 DOI: 10.3389/fmicb.2020.00280] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2019] [Accepted: 02/06/2020] [Indexed: 11/25/2022] Open
Abstract
Avian influenza virus (AIV) can cause severe diseases in poultry worldwide. H6N1 AIV was the dominant enzootic subtype in 1985 in the chicken farms of Taiwan until the initial outbreak of a low pathogenic avian influenza (LPAI) H5N2 virus in 2003; thereafter, this and other LPAIs have been sporadically detected. In 2015, the outbreak of three novel H5Nx viruses of highly pathogenic avian influenza (HPAI) emerged and devastated Taiwanese chicken and waterfowl industries. The mechanism of variation in pathogenicity among these viruses is unclear; but, in light of the many biological functions of viral non-structural protein 1 (NS1), including interferon (IFN) antagonist and host range determinant, we hypothesized that NS genetic diversity contributes to AIV pathogenesis. To determine the impact of NS1 variants on viral infection dynamics, we established a reverse genetics system with the genetic backbone of the enzootic Taiwanese H6N1 for generation of reassortant AIVs carrying exogenous NS segments of three different Taiwanese H5N2 strains. We observed distinct cellular distributions of NS1 among the reassortant viruses. Moreover, exchange of the NS segment significantly influenced growth kinetics and induction of cytokines [IFN-α, IFN-β, and tumor necrosis factor alpha (TNF-α)] in an NS1- and host-specific manner. The impact of NS1 variants on viral replication appears related to their synergic effects on viral RNA-dependent RNA polymerase activity and IFN response. With these approaches, we revealed that NS1 is a key factor responsible for the diverse characteristics of AIVs in Taiwan.
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Affiliation(s)
- Wen-Chien Wang
- Graduate Institute of Microbiology and Public Health, College of Veterinary Medicine, National Chung Hsing University, Taichung, Taiwan
| | - Chih-Ying Kuan
- Graduate Institute of Microbiology and Public Health, College of Veterinary Medicine, National Chung Hsing University, Taichung, Taiwan
| | - Yu-Jing Tseng
- Graduate Institute of Microbiology and Public Health, College of Veterinary Medicine, National Chung Hsing University, Taichung, Taiwan
| | - Chia-Hsuan Chang
- Graduate Institute of Microbiology and Public Health, College of Veterinary Medicine, National Chung Hsing University, Taichung, Taiwan
| | - Yee-Chen Liu
- Graduate Institute of Microbiology and Public Health, College of Veterinary Medicine, National Chung Hsing University, Taichung, Taiwan
| | - Yu-Chih Chang
- Graduate Institute of Microbiology and Public Health, College of Veterinary Medicine, National Chung Hsing University, Taichung, Taiwan
| | - Yu-Chen Hsu
- Graduate Institute of Microbiology and Public Health, College of Veterinary Medicine, National Chung Hsing University, Taichung, Taiwan
| | - Ming-Kun Hsieh
- Graduate Institute of Microbiology and Public Health, College of Veterinary Medicine, National Chung Hsing University, Taichung, Taiwan
| | - Shan-Chia Ou
- Graduate Institute of Microbiology and Public Health, College of Veterinary Medicine, National Chung Hsing University, Taichung, Taiwan
| | - Wei-Li Hsu
- Graduate Institute of Microbiology and Public Health, College of Veterinary Medicine, National Chung Hsing University, Taichung, Taiwan
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23
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Li YT, Chen CC, Chang AM, Chao DY, Smith GJD. Co-circulation of both low and highly pathogenic avian influenza H5 viruses in current poultry epidemics in Taiwan. Virus Evol 2020; 6:veaa037. [PMID: 32661493 PMCID: PMC7326300 DOI: 10.1093/ve/veaa037] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
Highly pathogenic avian influenza (HPAI) A(H5) viruses belonging to clade 2.3.4.4c of the A/goose/Guangdong/1/96-like (Gs/GD) lineage caused severe global outbreaks in domestic birds from 2014 to 2015, that also represented the first incursions of Gs/GD viruses into Taiwan and the USA. However, few studies have investigated the circulation of clade 2.3.4.4c viruses after 2015. Here, we describe Gs/GD clade 2.3.4.4c and Mexican-like H5N2 viruses that were isolated in Taiwan during active surveillance conducted in chicken farms from February to March 2019. Phylogenetic analysis demonstrated two distinct genome constellations of the clade 2.3.4.4c H5 viruses, with the internal genes of one of the new genotypes closely related to a virus isolated from a pintail (Anas acuta) in Taiwan, providing the first direct evidence that migratory birds play a role in importing viruses into Taiwan. Our study also confirmed the co-circulation of Gs/GD clade 2.3.4.4c and Mexican-like H5 lineage viruses in Taiwan, presenting a rare case where Gs/GD viruses developed sustained transmission alongside another enzootic H5 lineage, raising the possibility that homosubtypic immunity may mask virus transmission, potentially frustrating detection, and the implementation of appropriate control measures. To eradicate H5 viruses from poultry in Taiwan, further studies on the effect of co-circulation in poultry of low pathogenic avian influenza and HPAI viruses are needed. Furthermore, only with continued surveillance efforts globally can we fully discern dispersal patterns and risk factors of virus transmission both to and within Taiwan.
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Affiliation(s)
- Yao-Tsun Li
- Programme in Emerging Infectious Diseases, Duke-NUS Medical School, 169857, Singapore
| | - Chen-Chih Chen
- Institute of Wildlife Conservation, National Pingtung University of Science and Technology, Pingtung, Taiwan
| | - Ai-Mei Chang
- International Program in Animal Vaccine Technology, International College, National Pingtung University of Science and Technology, Pingtung, Taiwan
| | - Day-Yu Chao
- College of Veterinary Medicine, Graduate Institute of Microbiology and Public Health, National Chung-Hsing University, Taichung 40227, Taiwan
| | - Gavin J D Smith
- Programme in Emerging Infectious Diseases, Duke-NUS Medical School, 169857, Singapore
- SingHealth Duke-NUS Global Health Institute, SingHealth Duke-NUS Academic Medical Centre, 169857, Singapore
- Global Health Institute, Duke University, Durham, NC 27710, USA
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24
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Adlhoch C, Fusaro A, Kuiken T, Monne I, Smietanka K, Staubach C, Muñoz Guajardo I, Baldinelli F. Avian influenza overview February- August 2019. EFSA J 2019; 17:e05843. [PMID: 32626437 PMCID: PMC7009306 DOI: 10.2903/j.efsa.2019.5843] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023] Open
Abstract
Between 16 February and 15 August 2019, five HPAI A(H5N8) outbreaks at poultry establishments in Bulgaria, two low pathogenic avian influenza (LPAI) A(H5N1) outbreaks in poultry in Denmark and one in captive birds in Germany, one LPAI A(H7N3) outbreak in poultry in Italy and one LPAI A(H7N7) outbreak in poultry in Denmark were reported in Europe. Genetic characterisation reveals that viruses from Denmark cluster with viruses previously identified in wild birds and poultry in Europe; while the Italian isolate clusters with LPAI viruses circulating in wild birds in Central Asia. No avian influenza outbreaks in wild birds were notified in Europe in the relevant period for this report. A decreased number of outbreaks in poultry and wild birds in Asia, Africa and the Middle East was reported during the time period for this report, particularly during the last three months. Furthermore, only six affected wild birds were reported in the relevant time period of this report. Currently there is no evidence of a new HPAI virus incursion from Asia into Europe. However, passive surveillance systems may not be sensitive for early detection if the prevalence or case fatality in wild birds is very low. Therefore, it is important to encourage and maintain passive surveillance in Europe encouraging a search for carcasses of wild bird species that are in the revised list of target species in order to detect any incursion of HPAI virus early and initiate warning. No human infections due to HPAI viruses - detected in wild birds and poultry outbreaks in Europe - have been reported during the last years and the risk of zoonotic transmission to the general public in Europe is considered very low.
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25
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Tsunekuni R, Sudo K, Nguyen PT, Luu BD, Phuong TD, Tan TM, Nguyen T, Mine J, Nakayama M, Tanikawa T, Sharshov K, Takemae N, Saito T. Isolation of highly pathogenic H5N6 avian influenza virus in Southern Vietnam with genetic similarity to those infecting humans in China. Transbound Emerg Dis 2019; 66:2209-2217. [PMID: 31309743 DOI: 10.1111/tbed.13294] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2019] [Revised: 07/04/2019] [Accepted: 07/08/2019] [Indexed: 11/30/2022]
Abstract
Since 2013, H5N6 highly pathogenic avian influenza viruses (HPAIVs) have been responsible for outbreaks in poultry and wild birds around Asia. H5N6 HPAIV is also a public concern due to sporadic human infections being reported in China. In the current study, we isolated an H5N6 HPAIV strain (A/Muscovy duck/Long An/AI470/2018; AI470) from an outbreak at a Muscovy duck farm in Long An Province in Southern Vietnam in July 2018 and genetically characterized it. Basic Local Alignment Search Tool (BLAST) analysis revealed that the eight genomic segments of AI470 were most closely related (99.6%-99.9%) to A/common gull/Saratov/1676/2018 (H5N6), which was isolated in October 2018 in Russia. Furthermore, AI470 also shared 99.4%-99.9% homology with A/Guangxi/32797/2018, an H5N6 HPAIV strain that infected humans in China in 2018. Phylogenetic analyses of the entire genome showed that AI470 was directly derived from H5N6 HPAIVs that were in South China from 2015 to 2018 and clustered with four H5N6 HPAIV strains of human origin in South China from 2017 to 2018. This indicated that AI470 was introduced into Vietnam from China. In addition, molecular characteristics related to mammalian adaptation among the recent human H5N6 HPAIV viruses, except PB2 E627K, were shared by AI470. These findings are cause for concern since H5N6 HPAIV strains that possess a risk of human infection have crossed the Chinese border.
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Affiliation(s)
- Ryota Tsunekuni
- Division of Transboundary Animal Disease, National Institute of Animal Health, NARO, Tsukuba, Japan.,Thailand-Japan Zoonotic Diseases Collaboration Center, Bangkok, Thailand
| | - Kasumi Sudo
- National Veterinary Assay Laboratory, Ministry of Agriculture, Forestry and Fisheries, Tokyo, Japan
| | - Phuong Thanh Nguyen
- Department of Animal Health, Regional Animal Health Office No. 6, Ho Chi Minh City, Vietnam
| | - Bach Duc Luu
- Department of Animal Health, Regional Animal Health Office No. 6, Ho Chi Minh City, Vietnam
| | - Thai Duy Phuong
- Department of Animal Health, Regional Animal Health Office No. 6, Ho Chi Minh City, Vietnam
| | - Tran Minh Tan
- Department of Animal Health, Regional Animal Health Office No. 6, Ho Chi Minh City, Vietnam
| | - Tung Nguyen
- Division of International Cooperation and Communications, Department of Animal Health, Hanoi, Vietnam
| | - Junki Mine
- Division of Transboundary Animal Disease, National Institute of Animal Health, NARO, Tsukuba, Japan.,Thailand-Japan Zoonotic Diseases Collaboration Center, Bangkok, Thailand
| | - Momoko Nakayama
- Division of Transboundary Animal Disease, National Institute of Animal Health, NARO, Tsukuba, Japan.,Thailand-Japan Zoonotic Diseases Collaboration Center, Bangkok, Thailand
| | - Taichiro Tanikawa
- Division of Transboundary Animal Disease, National Institute of Animal Health, NARO, Tsukuba, Japan.,Thailand-Japan Zoonotic Diseases Collaboration Center, Bangkok, Thailand
| | - Kirill Sharshov
- Federal Research Center of Fundamental and Translational Medicine, Novosibirsk, Russia
| | - Nobuhiro Takemae
- Division of Transboundary Animal Disease, National Institute of Animal Health, NARO, Tsukuba, Japan.,Thailand-Japan Zoonotic Diseases Collaboration Center, Bangkok, Thailand
| | - Takehiko Saito
- Division of Transboundary Animal Disease, National Institute of Animal Health, NARO, Tsukuba, Japan.,Thailand-Japan Zoonotic Diseases Collaboration Center, Bangkok, Thailand.,United Graduate School of Veterinary Sciences, Gifu University, Gifu, Japan
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26
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Antigua KJC, Choi WS, Baek YH, Song MS. The Emergence and Decennary Distribution of Clade 2.3.4.4 HPAI H5Nx. Microorganisms 2019; 7:microorganisms7060156. [PMID: 31146461 PMCID: PMC6616411 DOI: 10.3390/microorganisms7060156] [Citation(s) in RCA: 45] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2019] [Revised: 05/24/2019] [Accepted: 05/28/2019] [Indexed: 11/27/2022] Open
Abstract
Reassortment events among influenza viruses occur naturally and may lead to the development of new and different subtypes which often ignite the possibility of an influenza outbreak. Between 2008 and 2010, highly pathogenic avian influenza (HPAI) H5 of the N1 subtype from the A/goose/Guangdong/1/96-like (Gs/GD) lineage generated novel reassortants by introducing other neuraminidase (NA) subtypes reported to cause most outbreaks in poultry. With the extensive divergence of the H5 hemagglutinin (HA) sequences of documented viruses, the WHO/FAO/OIE H5 Evolutionary Working Group clustered these viruses into a systematic and unified nomenclature of clade 2.3.4.4 currently known as “H5Nx” viruses. The rapid emergence and circulation of these viruses, namely, H5N2, H5N3, H5N5, H5N6, H5N8, and the regenerated H5N1, are of great concern based on their pandemic potential. Knowing the evolution and emergence of these novel reassortants helps to better understand their complex nature. The eruption of reports of each H5Nx reassortant through time demonstrates that it could persist beyond its usual seasonal activity, intensifying the possibility of these emerging viruses’ pandemic potential. This review paper provides an overview of the emergence of each novel HPAI H5Nx virus as well as its current epidemiological distribution.
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Affiliation(s)
- Khristine Joy C Antigua
- College of Medicine and Medical Research Institute, Chungbuk National University, Cheongju, Chungbuk 28644, Korea.
| | - Won-Suk Choi
- College of Medicine and Medical Research Institute, Chungbuk National University, Cheongju, Chungbuk 28644, Korea.
| | - Yun Hee Baek
- College of Medicine and Medical Research Institute, Chungbuk National University, Cheongju, Chungbuk 28644, Korea.
| | - Min-Suk Song
- College of Medicine and Medical Research Institute, Chungbuk National University, Cheongju, Chungbuk 28644, Korea.
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27
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Li X, Xu B, Shaman J. The Impact of Environmental Transmission and Epidemiological Features on the Geographical Translocation of Highly Pathogenic Avian Influenza Virus. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2019; 16:E1890. [PMID: 31142047 PMCID: PMC6603588 DOI: 10.3390/ijerph16111890] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/29/2019] [Revised: 05/21/2019] [Accepted: 05/22/2019] [Indexed: 11/16/2022]
Abstract
The factors affecting the transmission and geographic translocation of avian influenza viruses (AIVs) within wild migratory bird populations remain inadequately understood. In a previous study, we found that environmental transmission had little impact on AIV translocation in a model of a single migratory bird population. In order to simulate virus transmission and translocation more realistically, here we expanded this model system to include two migratory bird flocks. We simulated AIV transmission and translocation while varying four core properties: 1) Contact transmission rate; 2) infection recovery rate; 3) infection-induced mortality rate; and 4) migration recovery rate; and three environmental transmission properties: 1) Virion persistence; 2) exposure rate; and 3) re-scaled environmental infectiousness; as well as the time lag in the migration schedule of the two flocks. We found that environmental exposure rate had a significant impact on virus translocation in the two-flock model. Further, certain epidemiological features (i.e., low infection recovery rate, low mortality rate, and high migration transmission rate) in both flocks strongly affected the likelihood of virus translocation. Our results further identified the pathobiological features supporting AIV intercontinental dissemination risk.
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Affiliation(s)
- Xueying Li
- Ministry of Education Key Laboratory for Earth System Modelling, Department of Earth System Science, Tsinghua, Beijing 100084, China.
| | - Bing Xu
- Ministry of Education Key Laboratory for Earth System Modelling, Department of Earth System Science, Tsinghua, Beijing 100084, China.
- State Key Laboratory of Remote Sensing Science, College of Global Change and Earth System Science, Beijing Normal University, Beijing 100875, China.
| | - Jeffrey Shaman
- Department of Environmental Health Sciences, Columbia University, New York, NY 10032, USA.
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28
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Li X, Xu B, Shaman J. Pathobiological features favouring the intercontinental dissemination of highly pathogenic avian influenza virus. ROYAL SOCIETY OPEN SCIENCE 2019; 6:190276. [PMID: 31218065 PMCID: PMC6549942 DOI: 10.1098/rsos.190276] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/19/2019] [Accepted: 04/08/2019] [Indexed: 06/09/2023]
Abstract
Avian influenza viruses (AIVs) are a continued threat to global health and economy. Unlike other highly pathogenic AIVs, novel H5N8 disseminated very quickly from Korea to other areas in Asia, Europe and even North America following its first outbreak in 2014. However, the pathobiological features of the virus that favoured its global translocation remain unknown. In this study, we used a compartmental model to examine the avian epidemiological characteristics that would support the geographical spread of influenza by bird migration, and to provide recommendations for AIV surveillance in wild bird populations. We simulated virus transmission and translocation in a migratory bird population while varying four system properties: (i) contact transmission rate; (ii) infection recovery rate; (iii) mortality rate induced by infection; and (iv) migratory recovery rate. Using these simulations, we then calculated extinction and translocation probabilities for influenza during spring migration as a function of the altered properties. We find that lower infection recovery rates increase the likelihood of AIV translocation in migratory bird populations. In addition, lower mortality rates or migration recovery rates also favour translocation. Our results identify pathobiological features supporting AIV intercontinental dissemination risk and suggest that characteristic differences exist among H5N8 and other AIV subtypes that have not translocated as rapidly (e.g. H5N6 and H5N1).
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Affiliation(s)
- Xueying Li
- Department of Earth System Science, Ministry of Education Key Laboratory for Earth System Modelling, Tsinghua, Beijing, People's Republic of China
- Department of Environmental Health Sciences, Columbia University, New York, NY, USA
| | - Bing Xu
- Department of Earth System Science, Ministry of Education Key Laboratory for Earth System Modelling, Tsinghua, Beijing, People's Republic of China
- State Key Laboratory of Remote Sensing Science, College of Global Change and Earth System Science, Beijing Normal University, Beijing, People's Republic of China
| | - Jeffrey Shaman
- Department of Environmental Health Sciences, Columbia University, New York, NY, USA
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29
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Chen LH, Lee DH, Liu YP, Li WC, Swayne DE, Chang JC, Chen YP, Lee F, Tu WJ, Lin YJ. Reassortant Clade 2.3.4.4 of Highly Pathogenic Avian Influenza A(H5N6) Virus, Taiwan, 2017. Emerg Infect Dis 2019; 24:1147-1149. [PMID: 29774853 PMCID: PMC6004838 DOI: 10.3201/eid2406.172071] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Abstract
A highly pathogenic avian influenza A(H5N6) virus of clade 2.3.4.4 was detected in a domestic duck found dead in Taiwan during February 2017. The endemic situation and continued evolution of various reassortant highly pathogenic avian influenza viruses in Taiwan warrant concern about further reassortment and a fifth wave of intercontinental spread.
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30
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Adlhoch C, Kuiken T, Monne I, Mulatti P, Smietanka K, Staubach C, Guajardo IM, Baldinelli F. Avian influenza overview November 2018 - February 2019. EFSA J 2019; 17:e05664. [PMID: 32626274 PMCID: PMC7009136 DOI: 10.2903/j.efsa.2019.5664] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
No human infections due to highly pathogenic avian influenza (HPAI) A(H5N8) or A(H5N6) viruses ‐ detected in wild birds and poultry outbreaks in Europe ‐ have been reported so far and the risk of zoonotic transmission to the general public in Europe is considered very low. Between 16 November 2018 and 15 February 2019, two HPAI A(H5N8) outbreaks in poultry establishments in Bulgaria, two HPAI A(H5N6) outbreaks in wild birds in Denmark and one low pathogenic avian influenza (LPAI) A(H5N3) in captive birds in the Netherlands were reported in the European Union (EU). Genetic characterisation of the HPAI A(H5N6) viruses reveals that they cluster with the A(H5N6) viruses that have been circulating in Europe since December 2017. The wild bird species involved were birds of prey and were likely infected due to hunting or scavenging infected wild waterfowl. However, HPAI virus was not detected in other wild birds during this period. Outside the EU, two HPAI outbreaks were reported in poultry during the reporting period from western Russia. Sequence information on an HPAI A(H5N6) virus found in a common gull in western Russia in October 2018 suggests that the virus clusters within clade 2.3.4.4c and is closely related to viruses that transmitted zoonotically in China. An increasing number of outbreaks in poultry and wild birds in Asia, Africa and the Middle East was observed during the time period for this report. Currently there is no evidence of a new HPAI virus incursion from Asia into Europe. However, passive surveillance systems may not be sensitive enough if the prevalence or case fatality in wild birds is very low. Nevertheless, it is important to encourage and maintain a certain level of passive surveillance in Europe testing single sick or dead wild birds and birds of prey as they may be sensitive sentinel species for the presence of HPAI virus in the environment. A well‐targeted active surveillance might complement passive surveillance to collect information on HPAI infectious status of apparently healthy wild bird populations.
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31
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Tu YC, Chen KY, Chen CK, Cheng MC, Lee SH, Cheng IC. Novel application of Influenza A virus-inoculated chorioallantoic membrane to characterize a NP-specific monoclonal antibody for immunohistochemistry assaying. J Vet Sci 2019; 20:51-57. [PMID: 30481981 PMCID: PMC6351764 DOI: 10.4142/jvs.2019.20.1.51] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2018] [Revised: 10/15/2018] [Accepted: 11/18/2018] [Indexed: 11/25/2022] Open
Abstract
Monoclonal antibodies (MAbs) are widely applied in disease diagnoses. Herein, we report a MAb, WF-4, against Influenza A virus nucleoprotein (NP), its broad response with Influenza A virus, and its application in an immunohistochemistry (IHC) assay. WF-4 was screened by immunofluorescence assay (IFA). The results showed that its reactivity with baculovirus-expressed full-length recombinant NP (rNP) in Western blot (WB), indicating its IHC applicability. Fifteen Influenza A virus (reference subtypes H1 to H15) infected chicken embryonated chorioallantoic membranes (CAM), fixed by formalin, were all detectable in the WF-4-based IHC assay. Also, the reactivity of the IHC test with NP from experimentally inoculated H6N1 and from all recent outbreaks of H5 subtype avian Influenza A virus (AIV) field cases in Taiwan showed positive results. Our data indicate that CAM, a by-product of Influenza A virus preparation, is helpful for Influenza A virus-specific MAb characterization, and that the WF-4 MAb recognizes conserved and linear epitopes of Influenza A virus NP. Therefore, WF-4 is capable of detecting NP antigens via IHC and may be suitable for developing various tests for diagnosis of Influenza A virus and, especially, AIV infection.
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Affiliation(s)
- Yang-Chang Tu
- Department of Epidemiology, Animal Health Research Institute, Council of Agriculture, New Taipei City 25158, Taiwan.,Department of Veterinary Medicine, School of Veterinary Medicine, National Taiwan University, Taipei 10617, Taiwan
| | - Kuang-Yu Chen
- Department of Veterinary Medicine, School of Veterinary Medicine, National Taiwan University, Taipei 10617, Taiwan
| | - Chung-Kung Chen
- Department of Veterinary Medicine, School of Veterinary Medicine, National Taiwan University, Taipei 10617, Taiwan
| | - Ming-Chu Cheng
- Department of Epidemiology, Animal Health Research Institute, Council of Agriculture, New Taipei City 25158, Taiwan.,Department of Veterinary Medicine, College of Veterinary Medicine, National Pingtung University of Science and Technology, Pingtung 91201, Taiwan
| | - Shu-Hwae Lee
- Department of Epidemiology, Animal Health Research Institute, Council of Agriculture, New Taipei City 25158, Taiwan
| | - Ivan-Chen Cheng
- Department of Veterinary Medicine, School of Veterinary Medicine, National Taiwan University, Taipei 10617, Taiwan
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32
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Inactivated H5 Antigens of H5N8 Protect Chickens from Lethal Infections by the Highly Pathogenic H5N8 and H5N6 Avian Influenza Viruses. J Vet Res 2018; 62:413-420. [PMID: 30729196 PMCID: PMC6364154 DOI: 10.2478/jvetres-2018-0078] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2018] [Accepted: 12/12/2018] [Indexed: 11/20/2022] Open
Abstract
Introduction Highly pathogenic Asian H5-subtype avian influenza viruses have been found in poultry and wild birds worldwide since they were first detected in southern China in 1996. Extensive control efforts have not eradicated them. Vaccination prevents such viruses infecting poultry and reduces the number lost to compulsory slaughter. The study showed the efficacy of inactivated H5 vaccine from the H5N8 virus against highly pathogenic H5N8 and H5N6 avian influenza viruses in chickens. Material and Methods Reverse genetics constructed an H5 vaccine virus using the HA gene of the 2014 H5N8 avian influenza virus and the rest of the genes from A/PR/8/34 (H1N1). The vaccine viruses were grown in fertilised eggs, partially purified through a sucrose gradient, and inactivated with formalin. Chickens were immunised i.m. with 1 μg of oil-adjuvanted inactivated H5 antigens. Results Single dose H5 vaccine recipients were completely protected from lethal infections by homologous H5N8 avian influenza virus and shed no virus from the respiratory or intestinal tracts but were not protected from lethal infections by heterologous H5N6. When chickens were immunised with two doses and challenged with homologous H5N8 or heterologous H5N6, all survived and shed no virus. Conclusion Our results indicate that two-dose immunisations of chickens with H5 antigens with oil adjuvant are needed to provide broad protection against different highly pathogenic H5 avian influenza viruses.
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Baculovirus as an efficient vector for gene delivery into mosquitoes. Sci Rep 2018; 8:17778. [PMID: 30542209 PMCID: PMC6290771 DOI: 10.1038/s41598-018-35463-8] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2017] [Accepted: 11/05/2018] [Indexed: 02/06/2023] Open
Abstract
Efficient gene delivery technologies play an essential role in the gene functional analyses that are necessary for basic and applied researches. Mosquitoes are ubiquitous insects, responsible for transmitting many deadly arboviruses causing millions of human deaths every year. The lack of efficient and flexible gene delivery strategies in mosquitoes are among the major hurdles for the study of mosquito biology and mosquito-pathogen interactions. We found that Autographa californica multiple nucleopolyhedrovirus (AcMNPV), the type baculovirus species, can efficiently transduce mosquito cells without viral propagation, allowing high level gene expression upon inducement by suitable promoters without obvious negative effects on cell propagation and viability. AcMNPV transduces into several mosquito cell types, efficiently than in commonly used mammalian cell lines and classical plasmid DNA transfection approaches. We demonstrated the application of this system by expressing influenza virus neuraminidase (NA) into mosquito hosts. Moreover, AcMNPV can transduce both larvae and adults of essentially all blood-sucking mosquito genera, resulting in bright fluorescence in insect bodies with little or no tissue barriers. Our experiments establish baculovirus as a convenient and powerful gene delivery vector in vitro and in vivo that will greatly benefit research into mosquito gene regulation, development and the study of mosquito-borne viruses.
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Qin T, Zhu J, Ma R, Yin Y, Chen S, Peng D, Liu X. Compatibility between haemagglutinin and neuraminidase drives the recent emergence of novel clade 2.3.4.4 H5Nx avian influenza viruses in China. Transbound Emerg Dis 2018; 65:1757-1769. [PMID: 29999588 DOI: 10.1111/tbed.12949] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2018] [Revised: 06/10/2018] [Accepted: 06/12/2018] [Indexed: 12/12/2022]
Abstract
Genetic reassortments between highly pathogenic avian influenza (HPAI) H5 subtype viruses with different neuraminidase (NA) subtypes have increased in prevalence since 2010 in wild birds and poultry from China. The HA gene slightly evolved from clade 2.3.4 to clade 2.3.4.4, raising the question of whether novel clade 2.3.4.4 HA broke the balance with N1 but is matched well with NAx to drive viral epidemics. To clarify the role of compatibility between HA and NA on the prevalence of H5Nx subtypes, we constructed 10 recombinant viruses in which the clade 2.3.4 or clade 2.3.4.4 HA genes were matched with different NA (N1, N2 and N8) genes and evaluated viral characteristics and pathogenicity. Combinations between clade 2.3.4 HA and N1 or between clade 2.3.4.4 HA and NAx, but not between clade 2.3.4.4 HA and N1, or between clade 2.3.4 HA and NAx, promoted viral growth, NA activity, thermostability, low-pH stability and pathogenicity in chicken and mice. These findings suggest that both clade 2.3.4 HA/N1 and clade 2.3.4.4 HA/NAx displayed a better match, which could promote the increased prevalence of clade 2.3.4 H5N1 AIV (prior to 2010) and clade 2.3.4.4 H5Nx AIV (since 2010) in China, respectively.
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Affiliation(s)
- Tao Qin
- College of Veterinary Medicine, Yangzhou University, Yangzhou, China.,Jiangsu Co-Innovation Center for the Prevention and Control of Important Animal Infectious Disease and Zoonoses, Yangzhou, China.,Jiangsu Research Centre of Engineering and Technology for Prevention and Control of Poultry Disease, Yangzhou, China.,Joint Laboratory Safety of International Cooperation of Agriculture & Agricultural-Products, Yangzhou, China
| | - Jingjing Zhu
- College of Veterinary Medicine, Yangzhou University, Yangzhou, China.,Jiangsu Co-Innovation Center for the Prevention and Control of Important Animal Infectious Disease and Zoonoses, Yangzhou, China.,Jiangsu Research Centre of Engineering and Technology for Prevention and Control of Poultry Disease, Yangzhou, China.,Joint Laboratory Safety of International Cooperation of Agriculture & Agricultural-Products, Yangzhou, China
| | - Ruonan Ma
- College of Veterinary Medicine, Yangzhou University, Yangzhou, China.,Jiangsu Co-Innovation Center for the Prevention and Control of Important Animal Infectious Disease and Zoonoses, Yangzhou, China.,Jiangsu Research Centre of Engineering and Technology for Prevention and Control of Poultry Disease, Yangzhou, China.,Joint Laboratory Safety of International Cooperation of Agriculture & Agricultural-Products, Yangzhou, China
| | - Yuncong Yin
- College of Veterinary Medicine, Yangzhou University, Yangzhou, China.,Jiangsu Co-Innovation Center for the Prevention and Control of Important Animal Infectious Disease and Zoonoses, Yangzhou, China.,Jiangsu Research Centre of Engineering and Technology for Prevention and Control of Poultry Disease, Yangzhou, China.,Joint Laboratory Safety of International Cooperation of Agriculture & Agricultural-Products, Yangzhou, China
| | - Sujuan Chen
- College of Veterinary Medicine, Yangzhou University, Yangzhou, China.,Jiangsu Co-Innovation Center for the Prevention and Control of Important Animal Infectious Disease and Zoonoses, Yangzhou, China.,Jiangsu Research Centre of Engineering and Technology for Prevention and Control of Poultry Disease, Yangzhou, China.,Joint Laboratory Safety of International Cooperation of Agriculture & Agricultural-Products, Yangzhou, China
| | - Daxin Peng
- College of Veterinary Medicine, Yangzhou University, Yangzhou, China.,Jiangsu Co-Innovation Center for the Prevention and Control of Important Animal Infectious Disease and Zoonoses, Yangzhou, China.,Jiangsu Research Centre of Engineering and Technology for Prevention and Control of Poultry Disease, Yangzhou, China.,Joint Laboratory Safety of International Cooperation of Agriculture & Agricultural-Products, Yangzhou, China
| | - Xiufan Liu
- College of Veterinary Medicine, Yangzhou University, Yangzhou, China.,Jiangsu Co-Innovation Center for the Prevention and Control of Important Animal Infectious Disease and Zoonoses, Yangzhou, China.,Jiangsu Research Centre of Engineering and Technology for Prevention and Control of Poultry Disease, Yangzhou, China.,Joint Laboratory Safety of International Cooperation of Agriculture & Agricultural-Products, Yangzhou, China
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35
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Characterization of a novel reassortant H5N6 highly pathogenic avian influenza virus clade 2.3.4.4 in Korea, 2017. Emerg Microbes Infect 2018; 7:103. [PMID: 29895932 PMCID: PMC5997646 DOI: 10.1038/s41426-018-0104-3] [Citation(s) in RCA: 53] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2017] [Revised: 04/22/2018] [Accepted: 04/25/2018] [Indexed: 11/09/2022]
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36
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Liu YP, Lee DH, Chen LH, Lin YJ, Li WC, Hu SC, Chen YP, Swayne DE, Lee MS. Detection of reassortant H5N6 clade 2.3.4.4 highly pathogenic avian influenza virus in a black-faced spoonbill (Platalea minor) found dead, Taiwan, 2017. INFECTION GENETICS AND EVOLUTION 2018; 62:275-278. [PMID: 29705362 DOI: 10.1016/j.meegid.2018.04.026] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/17/2018] [Revised: 04/16/2018] [Accepted: 04/19/2018] [Indexed: 10/17/2022]
Abstract
A H5N6 highly pathogenic avian influenza virus (HPAIV) was detected in a black-faced spoonbill (Platalea minor) found dead in Taiwan during December 2017. Genome sequencing and phylogenetic analyses suggest the hemagglutinin gene belongs to H5 clade 2.3.4.4 Group B. All genes except neuraminidase gene shared high levels of nucleotide identity with H5N8 HPAIV identified from Europe during 2016-2017. Genetically similar H5N6 HPAIV was also identified from Japan during November 2017. Enhanced surveillance is required in this region.
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Affiliation(s)
- Yu-Pin Liu
- Animal Health Research Institute, Council of Agriculture, New Taipei City, Taiwan
| | - Dong-Hun Lee
- U.S. National Poultry Research Center, Agricultural Research Service, U.S. Department of Agriculture, Athens, GA, USA
| | - Li-Hsuan Chen
- Animal Health Research Institute, Council of Agriculture, New Taipei City, Taiwan
| | - Yu-Ju Lin
- Animal Health Research Institute, Council of Agriculture, New Taipei City, Taiwan
| | - Wan-Chen Li
- Animal Health Research Institute, Council of Agriculture, New Taipei City, Taiwan
| | - Shu-Chia Hu
- Animal Health Research Institute, Council of Agriculture, New Taipei City, Taiwan
| | - Yen-Ping Chen
- Animal Health Research Institute, Council of Agriculture, New Taipei City, Taiwan
| | - David E Swayne
- U.S. National Poultry Research Center, Agricultural Research Service, U.S. Department of Agriculture, Athens, GA, USA
| | - Ming-Shiuh Lee
- Animal Health Research Institute, Council of Agriculture, New Taipei City, Taiwan.
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37
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Lee DH, Bertran K, Kwon JH, Swayne DE. Evolution, global spread, and pathogenicity of highly pathogenic avian influenza H5Nx clade 2.3.4.4. J Vet Sci 2018; 18:269-280. [PMID: 28859267 PMCID: PMC5583414 DOI: 10.4142/jvs.2017.18.s1.269] [Citation(s) in RCA: 235] [Impact Index Per Article: 39.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2017] [Accepted: 07/22/2017] [Indexed: 12/16/2022] Open
Abstract
Novel subtypes of Asian-origin (Goose/Guangdong lineage) H5 highly pathogenic avian influenza (HPAI) viruses belonging to clade 2.3.4, such as H5N2, H5N5, H5N6, and H5N8, have been identified in China since 2008 and have since evolved into four genetically distinct clade 2.3.4.4 groups (A–D). Since 2014, HPAI clade 2.3.4.4 viruses have spread rapidly via migratory wild aquatic birds and have evolved through reassortment with prevailing local low pathogenicity avian influenza viruses. Group A H5N8 viruses and its reassortant viruses caused outbreaks in wide geographic regions (Asia, Europe, and North America) during 2014–2015. Novel reassortant Group B H5N8 viruses caused outbreaks in Asia, Europe, and Africa during 2016–2017. Novel reassortant Group C H5N6 viruses caused outbreaks in Korea and Japan during the 2016–2017 winter season. Group D H5N6 viruses caused outbreaks in China and Vietnam. A wide range of avian species, including wild and domestic waterfowl, domestic poultry, and even zoo birds, seem to be permissive for infection by and/or transmission of clade 2.3.4.4 HPAI viruses. Further, compared to previous H5N1 HPAI viruses, these reassortant viruses show altered pathogenicity in birds. In this review, we discuss the evolution, global spread, and pathogenicity of H5 clade 2.3.4.4 HPAI viruses.
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Affiliation(s)
- Dong-Hun Lee
- U.S. National Poultry Research Center, Agricultural Research Service, U.S. Department of Agriculture, Athens, GA 30605, USA
| | - Kateri Bertran
- U.S. National Poultry Research Center, Agricultural Research Service, U.S. Department of Agriculture, Athens, GA 30605, USA
| | - Jung-Hoon Kwon
- Avian Diseases Laboratory, College of Veterinary Medicine, Konkuk University, Seoul 05029, Korea
| | - David E Swayne
- U.S. National Poultry Research Center, Agricultural Research Service, U.S. Department of Agriculture, Athens, GA 30605, USA
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Stoute S, Crossley B, Shivaprasad HL. Study of an Outbreak of Highly Pathogenic Avian Influenza H5N8 in Commercial Pekin Ducks ( Anas platyrhynchos domesticus) in California. Avian Dis 2018; 62:101-108. [PMID: 29620470 DOI: 10.1637/11773-112017-reg.1] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
A February 2015 outbreak of highly pathogenic avian influenza (HPAI) H5N8 in a flock of commercial Pekin ducks ( Anas platyrhynchos domesticus) in California was investigated in detail. Approximately 17,349 five-wk-old ducks experienced an increased mortality from a normal of eight birds per day to 24, 18, 24, 33, and 61 birds per day, respectively, in the last 5 days prior to flock depopulation. Clinically, there was decreased water and feed consumption, and approximately 1.0% of the affected flock exhibited neurologic signs. Necropsy of five clinically ill ducks revealed pale, patchy areas on the epicardium in two birds, pale foci of necrosis in the liver of one bird, and airsacculitis in three birds. Histopathology revealed multifocal nonsuppurative encephalomyelitis, myocarditis, myositis, pancreatitis, hepatitis, and glossitis. Immunohistochemistry revealed avian influenza virus (AIV) nucleoprotein in the nucleus and cytoplasm of various cells in the aforementioned organs, as well as in the skin and feathers. Eight of the 10 sera samples tested were positive for avian influenza antibodies by agar gel immunodiffusion serology. Oropharyngeal and cloacal swabs taken from 15 birds, as well as from the lungs, livers, pancreas, and spleen, were positive for AIV by real-time reverse transcriptase (rRT) PCR. AIV was isolated and typed as Eurasian lineage HPAI H5N8, clade 2.3.4.4, by the National Veterinary Services Laboratory, Ames, IA. Extensive surveillance of birds for AIV around the 10-km zone did not reveal any additional cases. Ducks on the affected premises were humanely euthanatized by foam and composted in-house, the houses were heated to 57 C for 4 days, and swabs were taken periodically from the compost to ensure negativity for AIV by rRT-PCR. The compost and litter were then removed, and the house was pressure cleaned, disinfected, and repopulated approximately 120 days after euthanatization of the ducks.
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Affiliation(s)
- Simone Stoute
- A California Animal Health & Food Safety Laboratory System, Turlock Branch, 1550 N. Soderquist Road, Turlock, CA 95381
| | - Beate Crossley
- B California Animal Health & Food Safety Laboratory System, Davis Branch, One Shields Avenue, Davis, CA 95616
| | - H L Shivaprasad
- C California Animal Health & Food Safety Laboratory System, Tulare Branch, 18830 Road 112, Tulare, CA 93274
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Tsunekuni R, Yaguchi Y, Kashima Y, Yamashita K, Takemae N, Mine J, Tanikawa T, Uchida Y, Saito T. Spatial transmission of H5N6 highly pathogenic avian influenza viruses among wild birds in Ibaraki Prefecture, Japan, 2016-2017. Arch Virol 2018; 163:1195-1207. [PMID: 29392495 DOI: 10.1007/s00705-018-3752-7] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2017] [Accepted: 01/10/2018] [Indexed: 11/25/2022]
Abstract
From 29 November 2016 to 24 January 2017, sixty-three cases of H5N6 highly pathogenic avian influenza virus (HPAIV) infections were detected in wild birds in Ibaraki Prefecture, Japan. Here, we analyzed the genetic, temporal, and geographic correlations of these 63 HPAIVs to elucidate their dissemination throughout the prefecture. Full-genome sequence analysis of the Ibaraki isolates showed that 7 segments (PB2, PB1, PA, HA, NP, NA, NS) were derived from G1.1.9 strains while the M segment was from G1.1 strains; both groups of strains circulated in south China. Pathological studies revealed severe systemic infection in dead swans (the majority of dead birds and the only species necropsied), thus indicating high susceptibility to H5N6 HPAIVs. Coalescent phylogenetic analysis using the 7 G1.1.9-derived segments enabled detailed analysis of the short-term evolution of these highly homologous HPAIVs. This analysis revealed that the H5N6 HPAIVs isolated from wild birds in Ibaraki Prefecture were divided into 7 groups. Spatial analysis demonstrated that most of the cases concentrated around Senba Lake originated from a single source, and progeny viruses were transmitted to other locations after the infection expanded in mute swans. In contrast, within just a 5-km radius of the area in which cases were concentrated, three different intrusions of H5N6 HPAIVs were evident. Multi-segment analysis of short-term evolution showed that not only was the invading virus spread throughout Ibaraki Prefecture but also that, despite the small size of this region, multiple invasions had occurred during winter 2016-2017.
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Affiliation(s)
- Ryota Tsunekuni
- Division of Transboundary Animal Disease, National Institute of Animal Health, National Agriculture and Food Research Organization, 3-1-5 Kannondai, Tsukuba, Ibaraki, 305-0854, Japan
| | - Yuji Yaguchi
- Ibaraki Prefecture Kenpoku Livestock Hygiene Service Center, 966-1 Nakagachityo, Mito, Ibaraki, 310-0002, Japan
| | - Yuki Kashima
- Ibaraki Prefecture Kenpoku Livestock Hygiene Service Center, 966-1 Nakagachityo, Mito, Ibaraki, 310-0002, Japan
| | - Kaoru Yamashita
- Ibaraki Prefecture Kenpoku Livestock Hygiene Service Center, 966-1 Nakagachityo, Mito, Ibaraki, 310-0002, Japan
| | - Nobuhiro Takemae
- Division of Transboundary Animal Disease, National Institute of Animal Health, National Agriculture and Food Research Organization, 3-1-5 Kannondai, Tsukuba, Ibaraki, 305-0854, Japan
| | - Junki Mine
- Division of Transboundary Animal Disease, National Institute of Animal Health, National Agriculture and Food Research Organization, 3-1-5 Kannondai, Tsukuba, Ibaraki, 305-0854, Japan
| | - Taichiro Tanikawa
- Division of Transboundary Animal Disease, National Institute of Animal Health, National Agriculture and Food Research Organization, 3-1-5 Kannondai, Tsukuba, Ibaraki, 305-0854, Japan
| | - Yuko Uchida
- Division of Transboundary Animal Disease, National Institute of Animal Health, National Agriculture and Food Research Organization, 3-1-5 Kannondai, Tsukuba, Ibaraki, 305-0854, Japan
| | - Takehiko Saito
- Division of Transboundary Animal Disease, National Institute of Animal Health, National Agriculture and Food Research Organization, 3-1-5 Kannondai, Tsukuba, Ibaraki, 305-0854, Japan.
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40
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Liu K, Gu M, Hu S, Gao R, Li J, Shi L, Sun W, Liu D, Gao Z, Xu X, Hu J, Wang X, Liu X, Chen S, Peng D, Jiao X, Liu X. Genetic and biological characterization of three poultry-origin H5N6 avian influenza viruses with all internal genes from genotype S H9N2 viruses. Arch Virol 2018; 163:947-960. [PMID: 29307089 DOI: 10.1007/s00705-017-3695-4] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2017] [Accepted: 11/17/2017] [Indexed: 01/26/2023]
Abstract
During surveillance for avian influenza viruses, three H5N6 viruses were isolated in chickens obtained from live bird markets in eastern China, between January 2015 and April 2016. Sequence analysis revealed a high genomic homology between these poultry isolates and recent human H5N6 variants whose internal genes were derived from genotype S H9N2 avian influenza viruses. Glycan binding assays revealed that all avian H5N6 viruses were capable of binding to both human-type SAα-2,6Gal receptors and avian-type SAα-2,3Gal receptors. Their biological characteristics were further studied in BALB/c mice, specific-pathogen-free chickens, and mallard ducks. All three isolates had low pathogenicity in mice but were highly pathogenic to chickens, as evidenced by 100% mortality 36-120 hours post infection at a low dose of 103.0EID50 and through effective contact transmission. Moreover, all three poultry H5N6 isolates caused asymptomatic infections in ducks, which may serve as a reservoir host for their maintenance and dissemination; these migrating waterfowl could cause a potential global pandemic. Our study suggests that continuous epidemiological surveillance in poultry should be implemented for the early prevention of future influenza outbreaks.
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Affiliation(s)
- Kaituo Liu
- College of Veterinary Medicine, Yangzhou University, 48 East Wenhui Road, Yangzhou, 225009, Jiangsu, China
| | - Min Gu
- College of Veterinary Medicine, Yangzhou University, 48 East Wenhui Road, Yangzhou, 225009, Jiangsu, China.,Jiangsu Key Laboratory of Zoonosis, Yangzhou University, Yangzhou, 225009, Jiangsu, China.,Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonosis, Yangzhou, 225009, Jiangsu, China
| | - Shunlin Hu
- College of Veterinary Medicine, Yangzhou University, 48 East Wenhui Road, Yangzhou, 225009, Jiangsu, China.,Jiangsu Key Laboratory of Zoonosis, Yangzhou University, Yangzhou, 225009, Jiangsu, China.,Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonosis, Yangzhou, 225009, Jiangsu, China
| | - Ruyi Gao
- College of Veterinary Medicine, Yangzhou University, 48 East Wenhui Road, Yangzhou, 225009, Jiangsu, China
| | - Juan Li
- College of Veterinary Medicine, Yangzhou University, 48 East Wenhui Road, Yangzhou, 225009, Jiangsu, China
| | - Liwei Shi
- College of Veterinary Medicine, Yangzhou University, 48 East Wenhui Road, Yangzhou, 225009, Jiangsu, China
| | - Wenqi Sun
- College of Veterinary Medicine, Yangzhou University, 48 East Wenhui Road, Yangzhou, 225009, Jiangsu, China
| | - Dong Liu
- College of Veterinary Medicine, Yangzhou University, 48 East Wenhui Road, Yangzhou, 225009, Jiangsu, China
| | - Zhao Gao
- College of Veterinary Medicine, Yangzhou University, 48 East Wenhui Road, Yangzhou, 225009, Jiangsu, China
| | - Xiulong Xu
- College of Veterinary Medicine, Yangzhou University, 48 East Wenhui Road, Yangzhou, 225009, Jiangsu, China.,Jiangsu Key Laboratory of Zoonosis, Yangzhou University, Yangzhou, 225009, Jiangsu, China.,Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonosis, Yangzhou, 225009, Jiangsu, China
| | - Jiao Hu
- College of Veterinary Medicine, Yangzhou University, 48 East Wenhui Road, Yangzhou, 225009, Jiangsu, China.,Jiangsu Key Laboratory of Zoonosis, Yangzhou University, Yangzhou, 225009, Jiangsu, China.,Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonosis, Yangzhou, 225009, Jiangsu, China
| | - Xiaoquan Wang
- College of Veterinary Medicine, Yangzhou University, 48 East Wenhui Road, Yangzhou, 225009, Jiangsu, China.,Jiangsu Key Laboratory of Zoonosis, Yangzhou University, Yangzhou, 225009, Jiangsu, China.,Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonosis, Yangzhou, 225009, Jiangsu, China
| | - Xiaowen Liu
- College of Veterinary Medicine, Yangzhou University, 48 East Wenhui Road, Yangzhou, 225009, Jiangsu, China.,Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonosis, Yangzhou, 225009, Jiangsu, China
| | - Sujuan Chen
- College of Veterinary Medicine, Yangzhou University, 48 East Wenhui Road, Yangzhou, 225009, Jiangsu, China.,Jiangsu Key Laboratory of Zoonosis, Yangzhou University, Yangzhou, 225009, Jiangsu, China.,Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonosis, Yangzhou, 225009, Jiangsu, China
| | - Daxin Peng
- College of Veterinary Medicine, Yangzhou University, 48 East Wenhui Road, Yangzhou, 225009, Jiangsu, China.,Jiangsu Key Laboratory of Zoonosis, Yangzhou University, Yangzhou, 225009, Jiangsu, China.,Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonosis, Yangzhou, 225009, Jiangsu, China
| | - Xinan Jiao
- College of Veterinary Medicine, Yangzhou University, 48 East Wenhui Road, Yangzhou, 225009, Jiangsu, China.,Jiangsu Key Laboratory of Zoonosis, Yangzhou University, Yangzhou, 225009, Jiangsu, China.,Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonosis, Yangzhou, 225009, Jiangsu, China
| | - Xiufan Liu
- College of Veterinary Medicine, Yangzhou University, 48 East Wenhui Road, Yangzhou, 225009, Jiangsu, China. .,Jiangsu Key Laboratory of Zoonosis, Yangzhou University, Yangzhou, 225009, Jiangsu, China. .,Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonosis, Yangzhou, 225009, Jiangsu, China.
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41
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Sun Z, Qin T, Meng F, Chen S, Peng D, Liu X. Development of a multiplex probe combination-based one-step real-time reverse transcription-PCR for NA subtype typing of avian influenza virus. Sci Rep 2017; 7:13455. [PMID: 29044197 PMCID: PMC5647442 DOI: 10.1038/s41598-017-13768-4] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2017] [Accepted: 09/29/2017] [Indexed: 12/31/2022] Open
Abstract
Nine influenza virus neuraminidase (NA) subtypes have been identified in poultry and wild birds. Few methods are available for rapid and simple NA subtyping. Here we developed a multiplex probe combination-based one-step real-time reverse transcriptase PCR (rRT-PCR) to detect nine avian influenza virus NA subtypes. Nine primer-probe pairs were assigned to three groups based on the different fluorescent dyes of the probes (FAM, HEX, or Texas Red). Each probe detected only one NA subtype, without cross reactivity. The detection limit was less than 100 EID50 or 100 copies of cDNA per reaction. Data obtained using this method with allantoic fluid samples isolated from live bird markets and H9N2-infected chickens correlated well with data obtained using virus isolation and sequencing, but was more sensitive. This new method provides a specific and sensitive alternative to conventional NA-subtyping methods.
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Affiliation(s)
- Zhihao Sun
- College of Veterinary Medicine, Yangzhou University, Yangzhou, Jiangsu, 225009, PR China.,Jiangsu Co-Innovation Center for the Prevention and Control of Important Animal Infectious Disease and Zoonoses, Yangzhou, Jiangsu, 225009, PR China.,Jiangsu Research Centre of Engineering and Technology for Prevention and Control of Poultry Disease, Yangzhou, Jiangsu, 225009, PR China
| | - Tao Qin
- College of Veterinary Medicine, Yangzhou University, Yangzhou, Jiangsu, 225009, PR China.,Jiangsu Co-Innovation Center for the Prevention and Control of Important Animal Infectious Disease and Zoonoses, Yangzhou, Jiangsu, 225009, PR China.,Jiangsu Research Centre of Engineering and Technology for Prevention and Control of Poultry Disease, Yangzhou, Jiangsu, 225009, PR China
| | - Feifei Meng
- College of Veterinary Medicine, Yangzhou University, Yangzhou, Jiangsu, 225009, PR China.,Jiangsu Co-Innovation Center for the Prevention and Control of Important Animal Infectious Disease and Zoonoses, Yangzhou, Jiangsu, 225009, PR China.,Jiangsu Research Centre of Engineering and Technology for Prevention and Control of Poultry Disease, Yangzhou, Jiangsu, 225009, PR China
| | - Sujuan Chen
- College of Veterinary Medicine, Yangzhou University, Yangzhou, Jiangsu, 225009, PR China.,Jiangsu Co-Innovation Center for the Prevention and Control of Important Animal Infectious Disease and Zoonoses, Yangzhou, Jiangsu, 225009, PR China.,Jiangsu Research Centre of Engineering and Technology for Prevention and Control of Poultry Disease, Yangzhou, Jiangsu, 225009, PR China
| | - Daxin Peng
- College of Veterinary Medicine, Yangzhou University, Yangzhou, Jiangsu, 225009, PR China. .,Jiangsu Co-Innovation Center for the Prevention and Control of Important Animal Infectious Disease and Zoonoses, Yangzhou, Jiangsu, 225009, PR China. .,Jiangsu Research Centre of Engineering and Technology for Prevention and Control of Poultry Disease, Yangzhou, Jiangsu, 225009, PR China.
| | - Xiufan Liu
- College of Veterinary Medicine, Yangzhou University, Yangzhou, Jiangsu, 225009, PR China.,Jiangsu Co-Innovation Center for the Prevention and Control of Important Animal Infectious Disease and Zoonoses, Yangzhou, Jiangsu, 225009, PR China.,Jiangsu Research Centre of Engineering and Technology for Prevention and Control of Poultry Disease, Yangzhou, Jiangsu, 225009, PR China
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42
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Woo C, Kwon JH, Lee DH, Kim Y, Lee K, Jo SD, Son KD, Oem JK, Wang SJ, Kim Y, Shin J, Song CS, Jheong W, Jeong J. Novel reassortant clade 2.3.4.4 avian influenza A (H5N8) virus in a grey heron in South Korea in 2017. Arch Virol 2017; 162:3887-3891. [PMID: 28900762 PMCID: PMC5671518 DOI: 10.1007/s00705-017-3547-2] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2017] [Accepted: 08/20/2017] [Indexed: 02/04/2023]
Abstract
We report the identification of a novel reassortant clade 2.3.4.4 H5N8 virus from a dead grey heron in Korea in 2017. Outbreaks of clade 2.3.4.4 H5 HPAIVs have been reported worldwide, and they have evolved into multiple genotypes among wild birds. Phylogenetic analysis indicated that this virus likely originated from Qinghai Lake and Western Siberia and further evolved through reassortment with Eurasian LPAI during the 2016 fall migration of wild birds. Enhanced surveillance and comparative genetic analysis will help to monitor the further evolution and dissemination of clade 2.3.4.4 HPAIVs.
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Affiliation(s)
- Chanjin Woo
- Environmental Health Research Department, National Institute of Environmental Research, Hwangyeong-ro 42, Seo-gu, Incheon, Republic of Korea
| | - Jung-Hoon Kwon
- Avian Disease Laboratory, College of Veterinary Medicine, Konkuk University, Neungdong-ro 120, Gwangjin-gu, Seoul, Republic of Korea
| | - Dong-Hun Lee
- Southeast Poultry Research Laboratory, U.S. National Poultry Research Center, Agricultural Research Service, U.S. Department of Agriculture, Athens, GA, USA
| | - Youngsik Kim
- Environmental Health Research Department, National Institute of Environmental Research, Hwangyeong-ro 42, Seo-gu, Incheon, Republic of Korea
| | - Kwanghee Lee
- Environmental Health Research Department, National Institute of Environmental Research, Hwangyeong-ro 42, Seo-gu, Incheon, Republic of Korea
| | - Seong-Deok Jo
- Environmental Health Research Department, National Institute of Environmental Research, Hwangyeong-ro 42, Seo-gu, Incheon, Republic of Korea
| | - Ki Dong Son
- Environmental Health Research Department, National Institute of Environmental Research, Hwangyeong-ro 42, Seo-gu, Incheon, Republic of Korea
| | - Jae-Ku Oem
- Environmental Health Research Department, National Institute of Environmental Research, Hwangyeong-ro 42, Seo-gu, Incheon, Republic of Korea
| | - Seung-Jun Wang
- Environmental Health Research Department, National Institute of Environmental Research, Hwangyeong-ro 42, Seo-gu, Incheon, Republic of Korea
| | - Yongkwan Kim
- Environmental Health Research Department, National Institute of Environmental Research, Hwangyeong-ro 42, Seo-gu, Incheon, Republic of Korea
| | - Jeonghwa Shin
- Environmental Health Research Department, National Institute of Environmental Research, Hwangyeong-ro 42, Seo-gu, Incheon, Republic of Korea
| | - Chang-Seon Song
- Avian Disease Laboratory, College of Veterinary Medicine, Konkuk University, Neungdong-ro 120, Gwangjin-gu, Seoul, Republic of Korea
| | - Weonhwa Jheong
- Environmental Health Research Department, National Institute of Environmental Research, Hwangyeong-ro 42, Seo-gu, Incheon, Republic of Korea
| | - Jipseol Jeong
- Environmental Health Research Department, National Institute of Environmental Research, Hwangyeong-ro 42, Seo-gu, Incheon, Republic of Korea.
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43
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Surveillance for highly pathogenic influenza A viruses in California during 2014-2015 provides insights into viral evolutionary pathways and the spatiotemporal extent of viruses in the Pacific Americas Flyway. Emerg Microbes Infect 2017; 6:e80. [PMID: 28874792 PMCID: PMC5625317 DOI: 10.1038/emi.2017.66] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2017] [Revised: 06/22/2017] [Accepted: 06/28/2017] [Indexed: 12/27/2022]
Abstract
We used surveillance data collected in California before, concurrent with, and subsequent to an outbreak of highly pathogenic (HP) clade 2.3.4.4 influenza A viruses (IAVs) in 2014–2015 to (i) evaluate IAV prevalence in waterfowl, (ii) assess the evidence for spill-over infections in marine mammals and (iii) genetically characterize low-pathogenic (LP) and HP IAVs to refine inference on the spatiotemporal extent of HP genome constellations and to evaluate possible evolutionary pathways. We screened samples from 1496 waterfowl and 1142 marine mammals collected from April 2014 to August 2015 and detected IAV RNA in 159 samples collected from birds (n=157) and pinnipeds (n=2). HP IAV RNA was identified in three samples originating from American wigeon (Anas americana). Genetic sequence data were generated for a clade 2.3.4.4 HP IAV-positive diagnostic sample and 57 LP IAV isolates. Phylogenetic analyses revealed that the HP IAV was a reassortant H5N8 virus with gene segments closely related to LP IAVs detected in mallards (Anas platyrhynchos) sampled in California and other IAVs detected in wild birds sampled within the Pacific Americas Flyway. In addition, our analysis provided support for common ancestry between LP IAVs recovered from waterfowl sampled in California and gene segments of reassortant HP H5N1 IAVs detected in British Columbia, Canada and Washington, USA. Our investigation provides evidence that waterfowl are likely to have played a role in the evolution of reassortant HP IAVs in the Pacific Americas Flyway during 2014–2015, whereas we did not find support for spill-over infections in potential pinniped hosts.
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44
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Kim HK, Jeong DG, Yoon SW. Recent outbreaks of highly pathogenic avian influenza viruses in South Korea. Clin Exp Vaccine Res 2017; 6:95-103. [PMID: 28775973 PMCID: PMC5540969 DOI: 10.7774/cevr.2017.6.2.95] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2017] [Revised: 06/07/2017] [Accepted: 06/11/2017] [Indexed: 01/13/2023] Open
Abstract
Outbreaks of H5 highly pathogenic avian influenza viruses (HPAIVs) have caused economic loss for the poultry industry and posed a threat to public health. In South Korea, novel reassortants of HPAIVs such as H5N6 and H5N8 had been circulating in poultry. Here, we will discuss the identity of recent novel reassortants of Korean H5 HPAIVs and the recent advances in vaccine development, which will be useful for controlling HPAIV transmission in poultry and for effectively preventing future epidemics and pandemics.
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Affiliation(s)
- Hye Kwon Kim
- Infectious Disease Research Center, Korea Research Institute of Bioscience and Biotechnology, Daejeon, Korea
| | - Dae Gwin Jeong
- Infectious Disease Research Center, Korea Research Institute of Bioscience and Biotechnology, Daejeon, Korea.,University of Science and Technology (UST), Daejeon, Korea
| | - Sun-Woo Yoon
- Infectious Disease Research Center, Korea Research Institute of Bioscience and Biotechnology, Daejeon, Korea.,University of Science and Technology (UST), Daejeon, Korea
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45
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Song BM, Lee EK, Lee YN, Heo GB, Lee HS, Lee YJ. Phylogeographical characterization of H5N8 viruses isolated from poultry and wild birds during 2014-2016 in South Korea. J Vet Sci 2017; 18:89-94. [PMID: 28316230 PMCID: PMC5366307 DOI: 10.4142/jvs.2017.18.1.89] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2016] [Revised: 02/09/2017] [Accepted: 02/21/2017] [Indexed: 11/20/2022] Open
Abstract
During 2014–2016 HPAI outbreak in South Korea, H5N8 viruses have been mostly isolated in western areas of the country, which provide wintering habitats for wild birds and have a high density of poultry. Analysis of a total of 101 Korean isolates revealed that primitive H5N8 viruses (C0 group) have evolved into multiple genetic subgroups appearing from various epidemiological sources, namely, the viruses circulating in poultry farms (C1 and C5) and those reintroduced by migratory birds in late 2014 (C2 and C4). No C3 groups were detected. The results may explain the possible reasons of the recent long-term persistence of H5N8 viruses in South Korea, and help to develop the effective measures in controlling HPAI viruses.
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Affiliation(s)
- Byung-Min Song
- Avian Disease Research Division, Animal and Plant Quarantine Agency, Gimcheon 39660, Korea
| | - Eun-Kyoung Lee
- Avian Disease Research Division, Animal and Plant Quarantine Agency, Gimcheon 39660, Korea
| | - Yu-Na Lee
- Avian Disease Research Division, Animal and Plant Quarantine Agency, Gimcheon 39660, Korea
| | - Gyeong-Beom Heo
- Avian Disease Research Division, Animal and Plant Quarantine Agency, Gimcheon 39660, Korea
| | - Hee-Soo Lee
- Avian Disease Research Division, Animal and Plant Quarantine Agency, Gimcheon 39660, Korea
| | - Youn-Jeong Lee
- Avian Disease Research Division, Animal and Plant Quarantine Agency, Gimcheon 39660, Korea
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46
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Pantin-Jackwood MJ, Costa-Hurtado M, Bertran K, DeJesus E, Smith D, Swayne DE. Infectivity, transmission and pathogenicity of H5 highly pathogenic avian influenza clade 2.3.4.4 (H5N8 and H5N2) United States index viruses in Pekin ducks and Chinese geese. Vet Res 2017; 48:33. [PMID: 28592320 PMCID: PMC5463389 DOI: 10.1186/s13567-017-0435-4] [Citation(s) in RCA: 66] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2017] [Accepted: 05/11/2017] [Indexed: 11/13/2022] Open
Abstract
In late 2014, a H5N8 highly pathogenic avian influenza (HPAI) virus, clade 2.3.4.4, spread by migratory waterfowl into North America reassorting with low pathogenicity AI viruses to produce a H5N2 HPAI virus. Since domestic waterfowl are common backyard poultry frequently in contact with wild waterfowl, the infectivity, transmissibility, and pathogenicity of the United States H5 HPAI index viruses (H5N8 and H5N2) was investigated in domestic ducks and geese. Ducks infected with the viruses had an increase in body temperature but no or mild clinical signs. Infected geese did not show increase in body temperature and most only had mild clinical signs; however, some geese presented severe neurological signs. Ducks became infected and transmitted the viruses to contacts when inoculated with high virus doses [(104 and 106 50% embryo infective dose (EID50)], but not with a lower dose (102 EID50). Geese inoculated with the H5N8 virus became infected regardless of the virus dose given, and transmitted the virus to direct contacts. Only geese inoculated with the higher doses of the H5N2 and their contacts became infected, indicating differences in infectivity between the two viruses and the two waterfowl species. Geese shed higher titers of virus and for a longer period of time than ducks. In conclusion, the H5 HPAI viruses can infect domestic waterfowl and easily transmit to contact birds, with geese being more susceptible to infection and disease than ducks. The disease is mostly asymptomatic, but infected birds shed virus for several days representing a risk to other poultry species.
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Affiliation(s)
- 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, 934 College Station Rd, Athens, GA 30605 USA
| | - Mar Costa-Hurtado
- 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, 934 College Station Rd, Athens, GA 30605 USA
| | - 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, 934 College Station Rd, Athens, GA 30605 USA
| | - Eric DeJesus
- 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, 934 College Station Rd, Athens, GA 30605 USA
| | - Diane Smith
- 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, 934 College Station Rd, 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, 934 College Station Rd, Athens, GA 30605 USA
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Dhingra MS, Artois J, Robinson TP, Linard C, Chaiban C, Xenarios I, Engler R, Liechti R, Kuznetsov D, Xiao X, Dobschuetz SV, Claes F, Newman SH, Dauphin G, Gilbert M. Global mapping of highly pathogenic avian influenza H5N1 and H5Nx clade 2.3.4.4 viruses with spatial cross-validation. eLife 2016; 5. [PMID: 27885988 PMCID: PMC5161450 DOI: 10.7554/elife.19571] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2016] [Accepted: 11/14/2016] [Indexed: 01/09/2023] Open
Abstract
Global disease suitability models are essential tools to inform surveillance systems and enable early detection. We present the first global suitability model of highly pathogenic avian influenza (HPAI) H5N1 and demonstrate that reliable predictions can be obtained at global scale. Best predictions are obtained using spatial predictor variables describing host distributions, rather than land use or eco-climatic spatial predictor variables, with a strong association with domestic duck and extensively raised chicken densities. Our results also support a more systematic use of spatial cross-validation in large-scale disease suitability modelling compared to standard random cross-validation that can lead to unreliable measure of extrapolation accuracy. A global suitability model of the H5 clade 2.3.4.4 viruses, a group of viruses that recently spread extensively in Asia and the US, shows in comparison a lower spatial extrapolation capacity than the HPAI H5N1 models, with a stronger association with intensively raised chicken densities and anthropogenic factors.
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Affiliation(s)
- Madhur S Dhingra
- Spatial Epidemiology Lab, Université Libre de Bruxelles, Brussels, Belgium.,Department of Animal Husbandry and Dairying, Government of Haryana, Panchkula, India
| | - Jean Artois
- Spatial Epidemiology Lab, Université Libre de Bruxelles, Brussels, Belgium
| | - Timothy P Robinson
- Livestock Systems and Environment, International Livestock Research Institute, Nairobi, Kenya
| | - Catherine Linard
- Spatial Epidemiology Lab, Université Libre de Bruxelles, Brussels, Belgium.,Department of Geography, Université de Namur, Namur, Belgium
| | - Celia Chaiban
- Spatial Epidemiology Lab, Université Libre de Bruxelles, Brussels, Belgium
| | - Ioannis Xenarios
- Swiss-Prot and Vital-IT group, Swiss Institute of Bioinformatics, Lausanne, Switzerland.,Center for Integrative Genomics, University of Lausanne, Lausanne, Switzerland
| | - Robin Engler
- Swiss-Prot and Vital-IT group, Swiss Institute of Bioinformatics, Lausanne, Switzerland
| | - Robin Liechti
- Swiss-Prot and Vital-IT group, Swiss Institute of Bioinformatics, Lausanne, Switzerland
| | - Dmitri Kuznetsov
- Swiss-Prot and Vital-IT group, Swiss Institute of Bioinformatics, Lausanne, Switzerland
| | - Xiangming Xiao
- Department of Microbiology and Plant Biology, University of Oklahoma, Norman, United States.,Center for Spatial Analysis, University of Oklahoma, Norman, United States.,Institute of Biodiversity Science, Fudan University, Shanghai, China
| | - Sophie Von Dobschuetz
- Animal Production and Health Division, Food and Agriculture Organization of the United Nations, Rome, Italy
| | - Filip Claes
- Emergency Center for Transboundary Animal Diseases, FAO Regional Office for Asia and the Pacific, Bangkok, Thailand
| | - Scott H Newman
- Emergency Center for Transboundary Animal Diseases, Food and Agriculture Organization of the United Nations, Hanoi, Vietnam
| | - Gwenaëlle Dauphin
- Animal Production and Health Division, Food and Agriculture Organization of the United Nations, Rome, Italy
| | - Marius Gilbert
- Spatial Epidemiology Lab, Université Libre de Bruxelles, Brussels, Belgium.,Fonds National de la Recherche Scientifique, Brussels, Belgium
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48
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Changes in adaptation of H5N2 highly pathogenic avian influenza H5 clade 2.3.4.4 viruses in chickens and mallards. Virology 2016; 499:52-64. [PMID: 27632565 DOI: 10.1016/j.virol.2016.08.036] [Citation(s) in RCA: 44] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2016] [Revised: 08/30/2016] [Accepted: 08/31/2016] [Indexed: 11/21/2022]
Abstract
H5N2 highly pathogenic avian influenza (HPAI) viruses caused a severe poultry outbreak in the United States (U.S.) during 2015. In order to examine changes in adaptation of this viral lineage, the infectivity, pathogenicity and transmission of poultry H5N2 viruses were investigated in chickens and mallards in comparison to the wild duck 2014 U.S. index H5N2 virus. The four poultry isolates examined had a lower mean bird infectious dose than the index virus but still transmitted poorly to direct contacts. In mallards, two of the H5N2 poultry isolates had similar high infectivity and transmissibility as the index H5N2 virus, the H5N8 U.S. index virus, and a 2005 H5N1 clade 2.2 virus. Mortality occurred with the H5N1 virus and, interestingly, with one of two poultry H5N2 isolates. Increased virus adaptation to chickens was observed with the poultry H5N2 viruses; however these viruses retained high adaptation to mallards but pathogenicity was differently affected.
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