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Wang Y, Wang M, Zhang H, Zhao C, Zhang Y, Shen J, Sun X, Xu H, Xie Y, Gao X, Cui P, Chu D, Li Y, Liu W, Peng P, Deng G, Guo J, Li X. Prevalence, evolution, replication and transmission of H3N8 avian influenza viruses isolated from migratory birds in eastern China from 2017 to 2021. Emerg Microbes Infect 2023; 12:2184178. [PMID: 36913241 PMCID: PMC10013397 DOI: 10.1080/22221751.2023.2184178] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/24/2023]
Abstract
The continued evolution and emergence of novel influenza viruses in wild and domestic animals poses an increasing public health risk. Two human cases of H3N8 avian influenza virus infection in China in 2022 have caused public concern regarding the risk of transmission between birds and humans. However, the prevalence of H3N8 avian influenza viruses in their natural reservoirs and their biological characteristics are largely unknown. To elucidate the potential threat of H3N8 viruses, we analyzed five years of surveillance data obtained from an important wetland region in eastern China and evaluated the evolutionary and biological characteristics of 21 H3N8 viruses isolated from 15,899 migratory bird samples between 2017 and 2021. Genetic and phylogenetic analyses showed that the H3N8 viruses circulating in migratory birds and ducks have evolved into different branches and have undergone complicated reassortment with viruses in waterfowl. The 21 viruses belonged to 12 genotypes, and some strains induced body weight loss and pneumonia in mice. All the tested H3N8 viruses preferentially bind to avian-type receptors, although they have acquired the ability to bind human-type receptors. Infection studies in ducks, chickens and pigeons demonstrated that the currently circulating H3N8 viruses in migratory birds have a high possibility of infecting domestic waterfowl and a low possibility of infecting chickens and pigeons. Our findings imply that circulating H3N8 viruses in migratory birds continue to evolve and pose a high infection risk in domestic ducks. These results further emphasize the importance of avian influenza surveillance at the wild bird and poultry interface.
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Affiliation(s)
- Yanwen Wang
- College of Agronomy, Liaocheng University, Liaocheng, People's Republic of China
| | - Mengjing Wang
- College of Agronomy, Liaocheng University, Liaocheng, People's Republic of China
| | - Hong Zhang
- College of Agronomy, Liaocheng University, Liaocheng, People's Republic of China
| | - Conghui Zhao
- Harbin Veterinary Research Institute of Chinese Academy of Agricultural Sciences, State Key Laboratory of Veterinary Biotechnology, National Poultry Laboratory Animal Resource Center, Harbin, People's Republic of China
| | - Yaping Zhang
- Harbin Veterinary Research Institute of Chinese Academy of Agricultural Sciences, State Key Laboratory of Veterinary Biotechnology, National Poultry Laboratory Animal Resource Center, Harbin, People's Republic of China
| | - Jinyan Shen
- College of Agronomy, Liaocheng University, Liaocheng, People's Republic of China
| | - Xiaohong Sun
- College of Agronomy, Liaocheng University, Liaocheng, People's Republic of China
| | - Hongke Xu
- College of Agronomy, Liaocheng University, Liaocheng, People's Republic of China
| | - Yujiao Xie
- College of Agronomy, Liaocheng University, Liaocheng, People's Republic of China
| | - Xinxin Gao
- College of Agronomy, Liaocheng University, Liaocheng, People's Republic of China
| | - Pengfei Cui
- Harbin Veterinary Research Institute of Chinese Academy of Agricultural Sciences, State Key Laboratory of Veterinary Biotechnology, National Poultry Laboratory Animal Resource Center, Harbin, People's Republic of China
| | - Dong Chu
- Biological Disaster Control and Prevention Center, National Forestry and Grassland Administration, Shenyang, People's Republic of China
| | - Yubao Li
- College of Agronomy, Liaocheng University, Liaocheng, People's Republic of China
| | - Wenqiang Liu
- College of Agronomy, Liaocheng University, Liaocheng, People's Republic of China
| | - Peng Peng
- Biological Disaster Control and Prevention Center, National Forestry and Grassland Administration, Shenyang, People's Republic of China
| | - Guohua Deng
- Harbin Veterinary Research Institute of Chinese Academy of Agricultural Sciences, State Key Laboratory of Veterinary Biotechnology, National Poultry Laboratory Animal Resource Center, Harbin, People's Republic of China
| | - Jing Guo
- College of Agronomy, Liaocheng University, Liaocheng, People's Republic of China
| | - Xuyong Li
- College of Agronomy, Liaocheng University, Liaocheng, People's Republic of China
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Calle-Hernández DM, Hoyos-Salazar V, Bonilla-Aldana DK. Prevalence of the H5N8 influenza virus in birds: Systematic review with meta-analysis. Travel Med Infect Dis 2023; 51:102490. [PMID: 36336273 DOI: 10.1016/j.tmaid.2022.102490] [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: 10/13/2022] [Revised: 10/28/2022] [Accepted: 10/31/2022] [Indexed: 11/06/2022]
Abstract
INTRODUCTION Avian influenza viruses are members of the Orthomyxoviridae family, considered highly pathogenic (HPAI). They result from genetic variations from their low virulence predecessors. HPAI is a global problem. Large outbreaks of HAPI have significant health and economic impacts. OBJECTIVE The objective of this study was to assess the prevalence of the H5N8 Influenza virus in birds, as well as to assess its variability according to the countries and years. METHODS A systematic review of the literature was carried out in six databases (Web of Sciences, Scopus, PubMed, SciELO, Lilacs and Google Scholar) to evaluate the proportion of birds infected with the H5N8 Influenza virus, by molecular and immunological techniques. A meta-analysis was performed using a random-effects model to calculate the pooled prevalence, 95% confidence intervals (95%CI). A 2-tailed 5% alpha level was used for hypothesis testing. Measures of heterogeneity were estimated and reported, including the Cochrane Q statistic, the I2 index, and the tau-squared test. In addition, bird species performed subgroup analyzes. RESULTS 152 data groups were analyzed, a combined prevalence of 1.6% (95% CI 1.3-1.9%) was found for molecular studies, and the ELISA study yielded a seroprevalence of 66.7%; those results of molecular detection varied by year, from 0.2% in 2014 to 52.6% in 2020 and 96.9% in 2015. CONCLUSION The combined prevalence was substantial because large outbreaks have caused severe economic repercussions. In addition, it is considered a serious concern for public health due to its possible zoonotic activity.
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Affiliation(s)
- Dayana M Calle-Hernández
- Faculty of Veterinary Medicine, Fundación Universitaria Autónoma de las Américas, Pereira, Risaralda, Colombia; Institución Universitaria Vision de las Americas, Pereira, Risaralda, Colombia
| | - Valentina Hoyos-Salazar
- Faculty of Veterinary Medicine, Fundación Universitaria Autónoma de las Américas, Pereira, Risaralda, Colombia; Institución Universitaria Vision de las Americas, Pereira, Risaralda, Colombia
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Li X, Zhang R, Huang Z, Yao D, Luo L, Chen J, Ye W, Li L, Xiao S, Liu X, Ou X, Sun B, Xu M, Yang R, Zhang X. Estimation of Avian Influenza Viruses in Water Environments of Live Poultry Markets in Changsha, China, 2014 to 2018. FOOD AND ENVIRONMENTAL VIROLOGY 2022; 14:30-39. [PMID: 34997459 DOI: 10.1007/s12560-021-09506-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/12/2021] [Accepted: 12/03/2021] [Indexed: 06/14/2023]
Abstract
In routine surveillance for avian influenza viruses (AIVs) in the environments of live poultry markets (LPMs), certain samples were positive for AIVs type A while negative for subtypes (e.g., H5, H7, and H9). However, little attention has been paid to these unsubtyped AIVs samples. To reveal the dynamic distribution and molecular characteristics of AIVs, especially the unsubtyped AIVs, we reported and analyzed 1969 samples collected from the water environments of LPMs in Changsha, China, from January 2014 to November 2018. Our results revealed that 1504 (76.38%) samples were positive for AIV type A. Of these samples, the predominant hemagglutinin (HA) subtype was H9, followed by H5 and H7 (P < 0.05). The positive rate of H5 subtype in water environmental samples exhibited seasonality, which reached a peak in each winter-spring season from January 2014 to March 2017. The positive rates of AIVs (including type A, subtype H9, and mixed subtype H5/H7/H9) in non-central-city regions were higher than that in the central-city regions (P < 0.05). Notably, 161 unsubtyped AIVs samples were detected during the routine surveillance. However, subtyping with the commercial kit further identified eight different HA and seven different neuraminidase subtypes. Analyses unraveled that further subtyped AIVs H1, H6, and H11 had only one basic amino acid (R or K) at the cleavage site and residues Q226 and G228 at the receptor-binding associated sites. Overall, in addition to H5, H7, and H9 subtypes, we should also pay attention to unsubtyped AIVs samples during the routine surveillance for AIVs in the environments of LPMs.
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Affiliation(s)
- Xiaoyu Li
- Department of Occupational and Environmental Health, Xiangya School of Public Health, Central South University, Changsha, 410078, China
| | - Rusheng Zhang
- Changsha Center for Disease Control and Prevention, Changsha, 410004, China.
| | - Zheng Huang
- Changsha Center for Disease Control and Prevention, Changsha, 410004, China
| | - Dong Yao
- Changsha Center for Disease Control and Prevention, Changsha, 410004, China
| | - Lei Luo
- Changsha Center for Disease Control and Prevention, Changsha, 410004, China
| | - Jingfang Chen
- Changsha Center for Disease Control and Prevention, Changsha, 410004, China
| | - Wen Ye
- Changsha Center for Disease Control and Prevention, Changsha, 410004, China
| | - Lingzhi Li
- Changsha Center for Disease Control and Prevention, Changsha, 410004, China
| | - Shan Xiao
- Changsha Center for Disease Control and Prevention, Changsha, 410004, China
| | - Xiaolei Liu
- Changsha Center for Disease Control and Prevention, Changsha, 410004, China
| | - Xinhua Ou
- Changsha Center for Disease Control and Prevention, Changsha, 410004, China
| | - Biancheng Sun
- Changsha Center for Disease Control and Prevention, Changsha, 410004, China
| | - Mingzhong Xu
- Changsha Center for Disease Control and Prevention, Changsha, 410004, China
| | - Rengui Yang
- Changsha Center for Disease Control and Prevention, Changsha, 410004, China
| | - Xian Zhang
- Department of Occupational and Environmental Health, Xiangya School of Public Health, Central South University, Changsha, 410078, China.
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