Results 41 to 50 of about 9,325 (204)

Phylogeographic dynamics of influenza A(H9N2) virus crossing Egypt [PDF]

, 2020
Low pathogenic avian influenza (LPAI) virus of subtype H9N2 is the most frequently detected subtype among domestic poultry and is a public health concern because of its zoonotic potential.
Lundkvist, Åke,, Bohlin, Jon,, Pettersson, John H.-O., Bohlin, Jon, Naguib, Mahmoud, Pettersson, John H-O,, Naguib, Mahmoud M, Lundkvist, Åke, Li, Ruiyun, Olsen, Björn,, Adel, Amany, Adel, Amany,, Olsen, Björn, Naguib, Mahmoud,, Li, Ruiyun,, Pettersson, John H-O, Naguib, Mahmoud M.   +16 more
core   +1 more source

Lack of Evidence for Human-to-Human Transmission of Avian Influenza A (H9N2) Viruses in Hong Kong, China 1999

Emerging Infectious Diseases, 2002
In April 1999, isolation of avian influenza A (H9N2) viruses from humans was confirmed for the first time. H9N2 viruses were isolated from nasopharyngeal aspirate specimens collected from two children who were hospitalized with uncomplicated, febrile ...
Timothy M. Uyeki, Yu-Hoi Chong, Jacqueline M. Katz, Wilina Lim, Yuk-Yin Ho, Sophia S. Wang, Thomas H.F. Tsang, Winnie Wan-Yee Au, Shuk-Chi Chan, Thomas Rowe, Jean Hu-Primmer, Jensa C. Bell, William W. Thompson, Carolyn Buxton Bridges, Nancy J. Cox, Kwok-Hang Mak, Keiji Fukuda   +16 more
doaj   +1 more source

Sequential aerosol and oral immunization with a bivalent H9N2/H5N2 vaccine protects against H5N1 and H9N2 avian influenza challenges. [PDF]

NPJ Vaccines
Abstract Avian influenza continues to be a major threat to poultry and public health. This study investigated the efficacy of a bivalent H9N2/H5N2 modified live virus (MLV) vaccine delivered through a sequential aerosol priming and drinking water boosting strategy in chickens.
Cargnin Faccin F, Gay LC, Regmi D, Hoelzl R, Mejías TD, Kapczynski D, Krammer F, Perez DR.   +7 more
europepmc   +4 more sources

Chlamydia psittaci Triggers the Invasion of H9N2 Avian Influenza Virus by Impairing the Functions of Chicken Macrophages

Animals, 2020
In a pilot study, simultaneous infection with Chlamydia psittaci (C. psittaci) and H9N2 virus induced 20% mortality and severe avian airsacculitis, shedding light on animal models of poultry respiratory diseases.
Jun Chu, Yongxia Guo, Guanlong Xu, Qiang Zhang, Zonghui Zuo, Qiang Li, Yihui Wang, Cheng He   +7 more
doaj   +1 more source

Identification of key residues involved in the neuraminidase antigenic variation of H9N2 influenza virus

Emerging Microbes and Infections, 2021
Influenza A H9N2 virus causes economic loss to the poultry industry and has likely contributed to the genesis of H5N1 and H7N9 viruses. The neuraminidase (NA) of H9N2 virus, like haemagglutinin, is under antibody selective pressure and may undergo ...
Fei Wang, Jinsen Wu, Yajuan Wang, Zhimin Wan, Hongxia Shao, Kun Qian, Jianqiang Ye, Aijian Qin   +7 more
doaj   +1 more source

Molecular and Antigenic Characterization of Avian H9N2 Viruses in Southern China

Microbiology Spectrum, 2022
The H9N2 subtype avian influenza virus (AIV) has become endemic in poultry globally; however due to its low pathogenicity, it is not under primary surveillance and control in many countries.
Wanwan Yan, Hongrui Cui, Marc Engelsma, Nancy Beerens, Monique M. van Oers, Mart C. M. de Jong, Xuesong Li, Qinfang Liu, Jianmei Yang, Qiaoyang Teng, Zejun Li   +10 more
doaj   +1 more source

Molecular characterization and pathogenicity of swine influenza H9N2 subtype virus A/swine/HeBei/012/2008/(H9N2)

Acta Virologica, 2011
The H9N2 subtype influenza virus (IV) is a remarkable member of the influenza A viruses because it can infect not only chickens, ducks and pigs, but also humans. Pigs are susceptible to both human and avian influenza viruses and have been proposed to be intermediate hosts for the generation of pandemic influenza viruses through reassortment or ...
Zhang, Rui-Hua, Cui, Hong-Yu, Xu, Ming-Ju, Li, Kai, Chen, Hua-Lan, Wang, Cun-Lian, Wei, Dong, Li, Cun-Xin, Xu, Tong   +8 more
openaire   +2 more sources

Experimental Co-infection of Low Pathogenic Avian Influenza Virus (H9N2) and Escherichia Coli in SPF Broiler Chickens.

SVU-International Journal of Veterinary Sciences, 2019
The work was implemented to evaluate the pathogenicity of H9N2 when co-infected with the E.coli. Avian influenza H9N2 virus strain A/chicken/Egypt/1618F/2016 which was isolated from Luxor province during 2016 and E.coli serotype O78 were used in this ...
Mohamed Taha, Ahmed Ibrahim, Nabila Osmsn, Ahmed Gaber, Soad Nasef, Mohammed S. Ahmed   +5 more
doaj   +1 more source

Differential replication of avian influenza H9N2 viruses in human alveolar epithelial A549 cells

Virology Journal, 2010
Avian influenza virus H9N2 isolates cause a mild influenza-like illness in humans. However, the pathogenesis of the H9N2 subtypes in human remains to be investigated.
Peiris Malik, Law Anna HY, Mok Chris KP, Lee Davy CW, Lau Allan SY   +4 more
doaj   +1 more source

All-trans retinoic acid increases the pathogenicity of the H9N2 influenza virus in mice

Virology Journal, 2022
Background The H9N2 virus can infect not only birds but also humans. The pathogenicity of H9N2 virus infection is determined by an excessive immune response in the lung.
Xiaofei Niu, Hongyan Wang, Lihong Zhao, Pengjing Lian, Yu Bai, Jingyun Li, Jian Qiao   +6 more
doaj   +1 more source