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| http://dx.doi.org/10.1155/2009/578179 | DOI Listing |
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H9N2 avian influenza virus diagnostics utilizing specific high-sensitivity enzymatic molecular system termed RPA-based CRISPR-Cas13a.
Int J Biol Macromol
January 2025
College of Veterinary Medicine, Shandong Agricultural University, Tai'an 271018, Shandong Province, China. Electronic address:
H9N2 avian influenza virus (AIV), a major pathogen causing respiratory infections in poultry, poses a significant threat to the poultry industry and human health. Early detection and control of H9N2 infections are essential for minimizing economic losses and preventing potential zoonotic transmission. A novel CRISPR-Cas family member called CRISPR-Cas13a comprises the CRISPR RNA (crRNA) and Cas13a nuclease.
View Article and Find Full Text PDFThe inhibitory effect of Hypericum japonicum on H9N2 avian influenza virus.
Adv Biotechnol (Singap)
November 2024
State Key Laboratory of Biocontrol, School of Life Sciences, Sun Yat-Sen University, Guangzhou, China.
The H9N2 subtype of avian influenza virus (AIV) causes severe immunosuppression and high mortality in view of its frequent co-infection with other pathogens, resulting in significant economic losses in the poultry industry. Current vaccines provide suboptimal immune protection against H9N2 AIV owing to antigenic variations, highlighting the urgent need for safe and effective antiviral drugs for the prevention and treatment of this virus. This study aimed to investigate the inhibitory effects of Hypericum japonicum extract on H9N2 AIV.
View Article and Find Full Text PDFA risk assessment framework was developed to evaluate the zoonotic potential of avian influenza (AI), focusing on virus mutations linked to phenotypic traits related to mammalian adaptation identified in the literature. Virus sequences were screened for the presence of these mutations and their geographical, temporal and subtype-specific trends. Spillover events to mammals (including humans) and human seroprevalence studies were also reviewed.
View Article and Find Full Text PDFEmergence of a novel reassortant highly pathogenic avian influenza clade 2.3.4.4b A(H5N2) Virus, 2024.
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Reassortant highly pathogenic avian influenza A(H5N2) clade 2.3.4.
View Article and Find Full Text PDFGenetic and Molecular Characterization of Avian Influenza A(H9N2) Viruses from Live Bird Markets (LBM) in Senegal.
Viruses
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Département de Virologie, Institut Pasteur de Dakar, Dakar BP 220, Senegal.
Despite extensive experience with influenza surveillance in humans in Senegal, there is limited knowledge about the actual situation and genetic diversity of avian influenza viruses (AIVs) circulating in the country, hindering control measures and pandemic risk assessment. Therefore, as part of the "One Health" approach to influenza surveillance, we conducted active AIV surveillance in two live bird markets (LBMs) in Dakar to better understand the dynamics and diversity of influenza viruses in Senegal, obtain genetic profiles of circulating AIVs, and assess the risk of emergence of novel strains and their transmission to humans. Cloacal swabs from poultry and environmental samples collected weekly from the two LBMs were screened by RT-qPCR for H5, H7, and H9 AIVs.
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