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https://www.readbyqxmd.com/read/28915920/current-situation-of-h9n2-subtype-avian-influenza-in-china
#1
REVIEW
Min Gu, Lijun Xu, Xiaoquan Wang, Xiufan Liu
In China, H9N2 subtype avian influenza outbreak is firstly reported in Guangdong province in 1992. Subsequently, the disease spreads into vast majority regions nationwide and has currently become endemic there. Over vicennial genetic evolution, the viral pathogenicity and transmissibility have showed an increasing trend as year goes by, posing serious threat to poultry industry. In addition, H9N2 has demonstrated significance to public health as it could not only directly infect mankind, but also donate partial or even whole cassette of internal genes to generate novel human-lethal reassortants like H5N1, H7N9, H10N8 and H5N6 viruses...
September 15, 2017: Veterinary Research
https://www.readbyqxmd.com/read/28892736/five-distinct-reassortants-of-h5n6-highly-pathogenic-avian-influenza-a-viruses-affected-japan-during-the-winter-of-2016-2017
#2
Nobuhiro Takemae, Ryota Tsunekuni, Kirill Sharshov, Taichiro Tanikawa, Yuko Uchida, Hiroshi Ito, Kosuke Soda, Tatsufumi Usui, Ivan Sobolev, Alexander Shestopalov, Tsuyoshi Yamaguchi, Junki Mine, Toshihiro Ito, Takehiko Saito
To elucidate the evolutionary pathway, we sequenced the entire genomes of 89 H5N6 highly pathogenic avian influenza viruses (HPAIVs) isolated in Japan during winter 2016-2017 and 117 AIV/HPAIVs isolated in Japan and Russia. Phylogenetic analysis showed that at least 5 distinct genotypes of H5N6 HPAIVs affected poultry and wild birds during that period. Japanese H5N6 isolates shared a common genetic ancestor in 6 of 8 genomic segments, and the PA and NS genes demonstrated 4 and 2 genetic origins, respectively...
September 8, 2017: Virology
https://www.readbyqxmd.com/read/28888649/identification-of-two-novel-avian-influenza-a-h5n6-viruses-in-wild-birds-shanghai-in-2016
#3
Guimei He, Lichen Zhou, Caihui Zhu, Hongliang Shi, Xiaofang Li, Di Wu, Jing Liu, Jiamin Lv, Chuanxia Hu, Zhihui Li, Zhenghuan Wang, Tianhou Wang
The H5N6 avian influenza virus (AIV) has been continuously reported in wild birds, which may contribute to further geographical spread during their long-distance migrations. Active AIV surveillance in wild birds was conducted during October and November 2016 in Shanghai, China. Two novel influenza A (H5N6) viruses were detected in samples from migratory waterfowl that are genetically similar to recent South Korea and Japan H5N6 viruses collected in 2016 and 2017, highlighting the role of migratory waterfowl in the dissemination of H5N6 viruses along migratory flyways...
September 2017: Veterinary Microbiology
https://www.readbyqxmd.com/read/28859267/evolution-global-spread-and-pathogenicity-of-highly-pathogenic-avian-influenza-h5nx-clade-2-3-4-4
#4
REVIEW
Dong-Hun Lee, Kateri Bertran, Jung-Hoon Kwon, David E Swayne
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...
August 31, 2017: Journal of Veterinary Science
https://www.readbyqxmd.com/read/28815716/characterization-of-h5n6-highly-pathogenic-avian-influenza-viruses-isolated-from-wild-and-captive-birds-in-the-winter-season-of-2016-2017-in-northern-japan
#5
Takahiro Hiono, Masatoshi Okamatsu, Keita Matsuno, Atsushi Haga, Ritsuko Iwata, Lam Thanh Nguyen, Mizuho Suzuki, Yuto Kikutani, Hiroshi Kida, Manabu Onuma, Yoshihiro Sakoda
On November 15, 2016, a suspected case of highly pathogenic avian influenza (HPAI) in a dead black swan was reported from a zoo in Akita prefecture, northern Japan, and an HPAI virus (HPAIV) belonging to the H5N6 subtype was isolated from specimens taken from the bird. After the initial report, 230 cases of HPAI caused by H5N6 viruses were reported from wild birds, captive birds, and domestic poultry farms throughout the country during the winter season. In the present study, we further characterized 66 H5N6 HPAIVs isolated from northern Japan...
August 16, 2017: Microbiology and Immunology
https://www.readbyqxmd.com/read/28736803/genetic-and-pathogenic-analysis-of-a-novel-reassortant-h5n6-influenza-virus-isolated-from-waterfowl-in-south-korea-in-2016
#6
In Hong Lee, Seo Yeon Jin, Sang Heui Seo
A novel reassortant highly pathogenic H5N6 influenza virus was isolated from waterfowl in South Korea in 2016. Seven genes of this virus originated from an H5N6 virus from China, whereas the remaining gene, PB1, was from an unknown virus. This virus productively infected pigs, which showed viral shedding through their noses and developed severe interstitial pneumonia.
July 24, 2017: Archives of Virology
https://www.readbyqxmd.com/read/28730524/genetic-characterization-of-novel-reassortant-h5n6-subtype-influenza-viruses-isolated-from-cats-in-eastern-china
#7
Xueliang Cao, Fan Yang, Haibo Wu, Lihua Xu
Cats are susceptible to influenza A viruses and therefore may act as transmission vectors within households, posing a potential public health concern. Two novel reassortant H5N6 influenza viruses were isolated from cats in Zhejiang Province, Eastern China, in 2016. Both viruses were characterized by whole-genome sequencing with subsequent phylogenetic analysis and genetic comparison. Phylogenetic analysis showed that these viruses received their genes from H5N6, H9N2, and H7N9 influenza viruses isolated from China...
July 21, 2017: Archives of Virology
https://www.readbyqxmd.com/read/28677861/a-clinical-approach-to-the-threat-of-emerging-influenza-viruses-in-the-asia-pacific-region
#8
REVIEW
David S C Hui, Nelson Lee, Paul K S Chan
Seasonal influenza epidemics and periodic pandemics are important causes of morbidity and mortality. Patients with chronic co-morbid illness, those at the extremes of age and pregnant women are at higher risks of complications requiring hospitalization, whereas young adults and obese individuals were also at increased risk during the A(H1N1) pandemic in 2009. Avian influenza A(H5N1) and A(H7N9) viruses have continued to circulate widely in some poultry populations and infect humans sporadically since 1997 and 2013, respectively...
July 5, 2017: Respirology: Official Journal of the Asian Pacific Society of Respirology
https://www.readbyqxmd.com/read/28676793/immune-responses-of-chickens-infected-with-wild-bird-origin-h5n6-avian-influenza-virus
#9
Shimin Gao, Yinfeng Kang, Runyu Yuan, Haili Ma, Bin Xiang, Zhaoxiong Wang, Xu Dai, Fumin Wang, Jiajie Xiao, Ming Liao, Tao Ren
Since April 2014, new infections of H5N6 avian influenza virus (AIV) in humans and domestic poultry have caused considerable economic losses in the poultry industry and posed an enormous threat to human health worldwide. In previous research using gene sequence and phylogenetic analysis, we reported that H5N6 AIV isolated in February 2015 (ZH283) in Pallas's sandgrouse was highly similar to that isolated in a human in December 2015 (A/Guangdong/ZQ874/2015), whereas a virus (i.e., SW8) isolated in oriental magpie-robin in 2014 was highly similar to that of A/chicken/Dongguan/2690/2013 (H5N6)...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28659898/biological-characterizations-of-h5nx-avian-influenza-viruses-embodying-different-neuraminidases
#10
Yuandi Yu, Zaoyue Zhang, Huanan Li, Xiuhui Wang, Bo Li, Xingxing Ren, Zhaoyong Zeng, Xu Zhang, Shukai Liu, Pingsheng Hu, Wenbao Qi, Ming Liao
The H5 subtype virus of Highly Pathogenic Avian Influenza Virus has caused huge economic losses to the poultry industry and is a threat to human health. Until 2010, H5N1 subtype virus was the major genotype in China. Since 2011, reassortant H5N2, H5N6, and H5N8 viruses were identified in domestic poultry in China. The clade 2.3.4.4 H5N6 and H5N8 AIV has now spread to most of China. Clade 2.3.4.4 H5N6 virus has caused 17 human deaths. However, the prevalence, pathogenicity, and transmissibility of the distinct NA reassortment with H5 subtypes viruses (H5Nx) is unknown...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28588293/human-infections-with-novel-reassortant-h5n6-avian-influenza-viruses-in-china
#11
Ye Zhang, Minmei Chen, Yiwei Huang, Wenfei Zhu, Lei Yang, Lidong Gao, Xiaodan Li, Fuyin Bi, Chaoyang Huang, Ning Kang, Hengjiao Zhang, Zi Li, Hong Bo, Dayan Wang, Yuelong Shu
No abstract text is available yet for this article.
June 7, 2017: Emerging Microbes & Infections
https://www.readbyqxmd.com/read/28453859/temporal-and-spatial-characteristics-of-highly-pathogenic-avian-influenza-outbreaks-in-china-during-2004-to-2015
#12
Mingyue Liu, Qian Lu, Shuxia Zhang, Xiaolong Feng, Md Shakhawat Hossain
Identifying the temporal and spatial characteristics of highly pathogenic avian influenza (HPAI) outbreaks is very important for developing effective and appropriate countermeasures against HPAI and promoting sustainable development in the poultry industry. This study aimed to analyze four aspects of the temporal and spatial characteristics of HPAI outbreaks in China, including the frequency of HPAI outbreaks, numbers of dead animals (died or culled), types of HPAI viruses, and species of infected animals. Temporal characteristics showed that the frequency of HPAI outbreaks decreased and then increased, with some years deviating from the main trend in 2004 to 2010 and 2011 to 2015, while the largest number of dead animals due to HPAI outbreaks was in 2005...
September 1, 2017: Poultry Science
https://www.readbyqxmd.com/read/28407105/preliminary-epidemiologic-assessment-of-human-infections-with-highly-pathogenic-avian-influenza-a-h5n6-virus-china
#13
Hui Jiang, Peng Wu, Timothy M Uyeki, Jianfeng He, Zhihong Deng, Wen Xu, Qiang Lv, Jin Zhang, Yang Wu, Tim K Tsang, Min Kang, Jiandong Zheng, Lili Wang, Bingyi Yang, Ying Qin, Luzhao Feng, Vicky J Fang, George F Gao, Gabriel M Leung, Hongjie Yu, Benjamin J Cowling
Background: Since 2014, 17 human cases of infection with the newly emerged highly pathogenic avian influenza A(H5N6) virus have been identified in China to date. The epidemiologic characteristics of laboratory-confirmed A(H5N6) cases were compared to A(H5N1) and A(H7N9) cases in mainland China. Methods: Data on laboratory-confirmed H5N6, H5N1, and H7N9 cases identified in mainland China were analyzed to compare epidemiologic characteristics and clinical severity...
August 1, 2017: Clinical Infectious Diseases: An Official Publication of the Infectious Diseases Society of America
https://www.readbyqxmd.com/read/28404845/molecular-evolution-and-emergence-of-h5n6-avian-influenza-virus-in-central-china
#14
Yingying Du, Mingyue Chen, Jiayun Yang, Yane Jia, Shufang Han, Edward C Holmes, Jie Cui
H5N6 avian influenza virus (AIV) has posed a potential threat to public health since its emergence in China in 2013. To understand the evolution and emergence of H5N6 AIV in the avian population, we performed molecular surveillance of live poultry markets (LPMs) in Wugang Prefecture, Hunan Province, in central China, during 2014 and 2015. Wugang Prefecture is located on the Eastern Asian-Australian migratory bird flyway, and a human death due to an H5N6 virus was reported in the prefecture on 21 November 2016...
June 15, 2017: Journal of Virology
https://www.readbyqxmd.com/read/28395999/the-ns1-protein-of-h5n6-feline-influenza-virus-inhibits-feline-beta-interferon-response-by-preventing-nf-%C3%AE%C2%BAb-and-irf3-activation
#15
Lifang Wang, Xinliang Fu, Yun Zheng, Pei Zhou, Bo Fang, San Huang, Xin Zhang, Jidang Chen, Zongxi Cao, Jin Tian, Shoujun Li
Despite the apparent lack of a feline influenza virus lineage, cats are susceptible to infection by influenza A viruses. Here, we characterized in vitro A/feline/Guangdong/1/2015, an H5N6 avian influenza virus recently isolated from cats. A/feline/Guangdong/1/2015 replicated to high titers and caused CPE in feline kidney cells. We determined that infection with A/feline/Guangdong/1/2015 did not activate the IFN-β promoter, but inhibited it by blocking the activation of NF-κB and IRF3. We also determined that the viral NS1 protein mediated the block, and that the dsRNA binding domain of NS1 was essential to perform this function...
September 2017: Developmental and Comparative Immunology
https://www.readbyqxmd.com/read/28352464/an-overview-of-the-epidemiology-and-emergence-of-influenza-a-infection-in-humans-over-time
#16
Chau Minh Bui, Abrar Ahmad Chughtai, Dillon Charles Adam, C Raina MacIntyre
In recent years multiple novel influenza A strains have emerged in humans. We reviewed publically available data to summarise epidemiological characteristics of distinct avian influenza viruses known to cause human infection and describe changes over time. Most recently identified zoonotic strains have emerged in China (H7N9, H5N6, H10N8) - these strains have occurred mostly in association with visiting a live bird market. Most zoonotic AIVs and swine influenza variants typically cause mild infections in humans however severe illness and fatalities are associated with zoonotic H5N6, H10N8, H7N9 and H5N1 serotypes, and the H1N1 1918 Spanish Influenza...
2017: Archives of Public Health, Archives Belges de Santé Publique
https://www.readbyqxmd.com/read/28327168/identification-of-two-novel-reassortant-avian-influenza-a-h5n6-viruses-in-whooper-swans-in-korea-2016
#17
Jipseol Jeong, Chanjin Woo, Hon S Ip, Injung An, Youngsik Kim, Kwanghee Lee, Seong-Deok Jo, Kidong Son, Saemi Lee, Jae-Ku Oem, Seung-Jun Wang, Yongkwan Kim, Jeonghwa Shin, Jonathan Sleeman, Weonhwa Jheong
BACKGROUND: On November 20, 2016 two novel strains of H5N6 highly pathogenic avian influenza virus (HPAIVs) were isolated from three whooper swans (Cygnus cygnus) at Gangjin Bay in South Jeolla province, South Korea. Identification of HPAIVs in wild birds is significant as there is a potential risk of transmission of these viruses to poultry and humans. RESULTS: Phylogenetic analysis revealed that Gangjin H5N6 viruses classified into Asian H5 clade 2.3.4.4 lineage and were distinguishable from H5N8 and H5N1 HPAIVs previously isolated in Korea...
March 21, 2017: Virology Journal
https://www.readbyqxmd.com/read/28322695/characterization-of-highly-pathogenic-avian-influenza-virus-a-h5n6-japan-november-2016
#18
Masatoshi Okamatsu, Makoto Ozawa, Kosuke Soda, Hiroki Takakuwa, Atsushi Haga, Takahiro Hiono, Aya Matsuu, Yuko Uchida, Ritsuko Iwata, Keita Matsuno, Masakazu Kuwahara, Toshiyo Yabuta, Tatsufumi Usui, Hiroshi Ito, Manabu Onuma, Yoshihiro Sakoda, Takehiko Saito, Koichi Otsuki, Toshihiro Ito, Hiroshi Kida
Highly pathogenic avian influenza viruses (HPAIVs) A(H5N6) were concurrently introduced into several distant regions of Japan in November 2016. These viruses were classified into the genetic clade 2.3.4.4c and were genetically closely related to H5N6 HPAIVs recently isolated in South Korea and China. In addition, these HPAIVs showed further antigenic drift.
April 2017: Emerging Infectious Diseases
https://www.readbyqxmd.com/read/28294126/highly-pathogenic-h5n6-influenza-a-viruses-recovered-from-wild-birds-in-guangdong-southern-china-2014-2015
#19
Yinfeng Kang, Lu Liu, Minsha Feng, Runyu Yuan, Can Huang, Yangtong Tan, Pei Gao, Dan Xiang, Xiaqiong Zhao, Yanling Li, David M Irwin, Yongyi Shen, Tao Ren
Since 2013, highly pathogenic (HP) H5N6 influenza A viruses (IAVs) have emerged in poultry in Asia, especially Southeast Asia. These viruses have also caused sporadic infections in humans within the same geographic areas. Active IAV surveillance in wild birds sampled in Guangdong province, China from August 2014 through February 2015 resulted in the recovery of three H5N6 IAVs. These H5N6 IAV isolates possess the basic amino acid motif at the HA1-HA2 cleavage site that is associated with highly pathogenic IAVs infecting chickens...
March 15, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28293218/genetic-characterization-of-continually-evolving-highly-pathogenic-h5n6-influenza-viruses-in-china-2012-2016
#20
Meng Li, Na Zhao, Jing Luo, Yuan Li, Lin Chen, Jiajun Ma, Lin Zhao, Guohui Yuan, Chengmin Wang, Yutian Wang, Yanhua Liu, Hongxuan He
H5N6 is a highly pathogenic avian influenza (HPAI) and a zoonotic disease that causes recurring endemics in East Asia. At least 155 H5N6 outbreaks, including 15 human infections, have been reported in China. These repeated outbreaks have increased concern that the H5N6 virus may cross over to humans and cause a pandemic. In February, 2016, peafowls in a breeding farm exhibited a highly contagious disease. Post-mortem examinations, including RT-PCR, and virus isolation, confirmed that the highly pathogenic H5N6 influenza virus was the causative agent, and the strain was named A/Pavo Cristatus/Jiangxi/JA1/2016...
2017: Frontiers in Microbiology
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