Is H9N2 Avian Influenza Virus a Pandemic Potential?

Isolation and Identification of Avian Influenza Virus H9N2 Subtype

PB2 subunit of avian influenza virus subtype H9N2: a pandemic risk factor.

Avian influenza viruses of subtype H9N2 that are found worldwide are occasionally transmitted to humans and pigs. Furthermore, by co-circulating with other influenza subtypes, they can generate new viruses with the potential to also cause zoonotic infections, as observed in 1997 with H5N1 or more recently with H7N9 and H10N8 viruses. Comparative analysis of the adaptive mutations in polymerases...

H9N2 avian influenza virus in a Mediterranean gull

Centre de Recherche de la Tour du Valat, Le Sambuc, 13200 Arles, France, 2 GEMI, UMR CNRS/IRD 2724, IRD, 911 avenue Agropolis BP 64501, 34394 Montpellier cedex 5, France, Unité de Génétique Moléculaire des Virus Respiratoires, URA3015 CNRS, EA302 Université Paris 7, Institut Pasteur, 25-28 rue du Dr Roux, 75724 Paris Cedex 15, France, 4 Present address: Research Center for Emerging Viral Infect...

Immunity Against Avian Influenza Viruspanax Ginseng Polysaccharide (GPS) Can Improve Immunity Against H9N2 Avian Influenza Virus in Chickens

The humoral immunization potential of panax ginseng polysaccharide (GPS) against H9N2 avian influenza virus (H9N2 AIV) in chickens was investigated. The effects of GPS treatment before and during H9N2 AIV infection were determined in chicken embryo fibroblast (CEF) by MTT (3(4, 5-dimethylthiazol-2-yl)-2, 3-diphenyl tetrazolium bromide) assays and quantitative RT-PCR analysis of MHC and cytokine...

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

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. Electron microscopy revealed round or oval virions with a diameter of 80 nm to...