Results 21 to 30 of about 6,056 (169)

Characterization of H9N2 Avian Influenza Viruses Isolated from Poultry Products in a Mouse Model

Viruses, 2022
Low pathogenic H9N2 avian influenza viruses have spread in wild birds and poultry worldwide. Recently, the number of human cases of H9N2 virus infection has increased in China and other countries, heightening pandemic concerns. In Japan, H9N2 viruses are
Jurika Murakami, Akihiro Shibata, Gabriele Neumann, Masaki Imai, Tokiko Watanabe, Yoshihiro Kawaoka   +5 more
doaj   +1 more source

Identification of thermostability-enhancing mutations in H9N2 avian influenza virus hemagglutinin. [PDF]

J Virol
ABSTRACT H9N2 avian influenza viruses (AIVs) remain a significant economic burden on poultry production and a persistent zoonotic threat. Hemagglutinin (HA), a surface glycoprotein mediating viral entry and pathogenesis, critically depends on thermostability for its ...
Liu B, Yu H, Yan Z, Zou S, Guo J, Cai S, Hu Y, Yang Y, Yan Y, Liu H, Mei K, Li Z, Qin L, Li Y, Huang S, Wen F.   +15 more
europepmc   +3 more sources

Isolation of avian influenza virus (H9N2) from emu in China [PDF]

Irish Veterinary Journal, 2006
This is the first reported isolation of avian influenza virus (AIV) from emu in China. An outbreak of AIV infection occurred at an emu farm that housed 40 four-month-old birds. Various degrees of haemorrhage were discovered in the tissues of affected emus. Cell degeneration and necrosis were observed microscopically.
Kang Wenhua, Pang Wanyong, Hao Junfeng, Zhao Deming   +3 more
openaire   +3 more sources

Detection of a Reassortant H9N2 Avian Influenza Virus with Intercontinental Gene Segments in a Resident Australian Chestnut Teal

Viruses, 2020
The present study reports the genetic characterization of a low-pathogenicity H9N2 avian influenza virus, initially from a pool and subsequently from individual faecal samples collected from Chestnut teals (Anas castanea) in southeastern Australia ...
Tarka Raj Bhatta, Anthony Chamings, Jessy Vibin, Marcel Klaassen, Soren Alexandersen   +4 more
doaj   +1 more source

Vaccination with recombinant Lactococcus lactis expressing HA1-IgY Fc fusion protein provides protective mucosal immunity against H9N2 avian influenza virus in chickens

Virology Journal, 2023
Background H9N2 virus is mainly transmitted through the respiratory mucosal pathway, so mucosal immunity is considered to play a good role in controlling avian influenza infection.
Ruihua Zhang, Tong Xu, Ziping Li, Longfei Li, Chunhong Li, Xinrui Li, Zhiyue Wang, Shaohua Wang, Xuejing Wang, Hongliang Zhang   +9 more
doaj   +1 more source

Seroprevalence survey of H9N2 avian influenza virus in backyard chickens around the Caspian Sea in Iran

Brazilian Journal of Poultry Science, 2010
Since 1998, an epidemic of avian influenza occurred in the Iranian poultry industry. The identified agent presented low pathogenicity, and was subtyped as an H9N2 avian influenza virus.
MM Hadipour
doaj   +1 more source

Avian Influenza A(H9N2) Virus in Poultry Worker, Pakistan, 2015 [PDF]

Emerging Infectious Diseases, 2018
Avian influenza A(H9N2) virus isolated from a poultry worker in Pakistan in 2015 was closely related to viruses detected in poultry farms. Observed mutations in the hemagglutinin related to receptor-binding affinity and antigenicity could affect cross-reactivity with prepandemic H9N2 vaccine strains.
Ali, M, Yaqub, T, Mukhtar, N, Imran, M, Ghafoor, A, Shahid, M.F, Naeem, M, Iqbal, M, Smith, G.J.D, Su, Y.C.F   +9 more
openaire   +3 more sources

Experimental Infection and In-Contact Transmission of H9N2 Avian Influenza Virus in Crows. [PDF]

Pathogens, 2022
This study aimed to investigate the potential of H9N2 avian influenza virus to cause disease and intra-species transmission in house crows (Corvus splendens). A group of six crows were intranasally inoculated with 106.0 EID50 of H9N2 virus (A/chicken/India/07OR17/2021), and 24 h post-inoculation six naïve crows were co-housed with infected crows. Crows
Verma AK, Kumar M, Murugkar HV, Nagarajan S, Tosh C, Namdeo P, Singh R, Mishra S, Kombiah S, Dhanapal S, Singh VP.   +10 more
europepmc   +5 more sources

H9N2 virus-derived M1 protein promotes H5N6 virus release in mammalian cells: Mechanism of avian influenza virus inter-species infection in humans.

PLoS Pathogens, 2021
H5N6 highly pathogenic avian influenza virus (HPAIV) clade 2.3.4.4 not only exhibits unprecedented intercontinental spread in poultry, but can also cause serious infection in humans, posing a public health threat.
Fangtao Li, Jiyu Liu, Jizhe Yang, Haoran Sun, Zhimin Jiang, Chenxi Wang, Xin Zhang, Yinghui Yu, Chuankuo Zhao, Juan Pu, Yipeng Sun, Kin-Chow Chang, Jinhua Liu, Honglei Sun   +13 more
doaj   +1 more source

Evaluation of the antiviral effects of aqueous extracts of red and yellow onions (Allium Cepa) against avian influenza virus subtype H9N2 [PDF]

The Iranian Journal of Veterinary Science and Technology, 2018
Avian influenza virus subtype H9N2 causes important economic losses in industrial poultry worldwide. Biosecurity and vaccination have not completely prevented the outbreak of avian influenza virus subtype H9N2 in poultry, and there are no appropriate ...
Saba Ahmadi, Zolfaghar Rajabi, Mehdi Vasfi-Marandi   +2 more
doaj   +1 more source