H9N2 virus
A G1-lineage H9N2 virus with oviduct tropism causes chronic pathological changes in the infundibulum and a long-lasting drop in egg production
... H9N2 virus qRRT-PCR positive samples were tested by IHC and a score was assigned to each section as follows: 0 no staining, 1 small clusters of positive cells, 2 multiple accumulations of positive cells and ...
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Prevailing PA mutation K356R in avian influenza H9N2 virus increases mammalian replication and pathogenicity
... the H9N2 subtype and their reassortants circulating in poultry are a potential source of pandemic viruses and hence represent a signif- icant public health threat ...the H9N2 virus had caused three ...
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Investigation of antiviral state mediated by interferon inducible transmembrane protein 1 induced by H9N2 virus and inactivated viral particle in human endothelial cells
... influenza virus infection [20, ...H1N1 virus titers in primary lung fibroblasts and in HeLa cells, while overexpression of IFITM1, 2, 3 could improve resistance to the H3N2 influenza in A549 and MDCK cell ...
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Avian influenza H9N2 virus isolated from air samples in LPMs in Jiangxi, China
... Sporadic human infections with H9N2 virus have been reported since the 1990s. Epidemiology data showed that some of these patients did not have direct contact with live poultry or any history of live ...
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Virulence Determinants in the PB2 Gene of a Mouse-Adapted H9N2 Virus
... influenza virus, especially for the H5 and H7 avian influenza ...and H9N2, which do not have multibasic amino acids, also are highly pathogenic and can result in systemic infection in mice, as observed with ...
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Prevailing PA Mutation K356R in Avian Influenza H9N2 Virus Increases Mammalian Replication and Pathogenicity
... the H9N2 subtype and their reassortants circulating in poultry are a potential source of pandemic viruses and hence represent a signif- icant public health threat ...the H9N2 virus had caused three ...
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Extraction and purification of the H9N2 virus nucleoprotein: A simple and practical method
... influenza virus proteins is very important due to the small size and the number of proteins and types of ...influenza virus are the importance of the preparation stages and puri- fication of the ...
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Differential replication properties among H9N2 avian influenza viruses of Eurasian origin
... type-H9N2 virus produced lower titers compared to the three G1-H9N2 viruses at respective time ...studied H9N2 viruses were sensitive to amantadine. The G1-H9N2 viruses have higher ...
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Infectivity and transmissibility of H9N2 avian influenza virus in chickens and wild terrestrial birds
... to H9N2 infection and infected sparrows can transmit virus not only to contact sparrows but also to contact ...to H9N2 virus infection and showed only very low levels of virus ...
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Serological evidence of H9N2 avian influenza virus exposure among poultry workers from Fars province of Iran
... the H9N2 subtype are classified as low pathogenic avian influenza (LPAI) ...recent H9N2 avian influenza (AI) isolates con- tains the L226Q (H3 numbering) amino acid substitution in their hemagglutinins ...
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H9N2 influenza virus acquires intravenous pathogenicity on the introduction of a pair of di basic amino acid residues at the cleavage site of the hemagglutinin and consecutive passages in chickens
... of H9N2 virus was different from those of H5N1 mutants while these viruses replicated in MDCK cells in the absence of trypsin and killed chickens when inoculated via intrave- nous route (Tables 1 and ...
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Immunity to Influenza A H9N2 Viruses Induced by Infection and Vaccination
... Since H9N2 viruses that possess HA antigenically similar to G1 and G9 viruses have continued to circulate in Asia, it was important to determine the cross-protective efficacy that a vac- cine of one H9 sublineage ...
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Crosstalk between H9N2 avian influenza virus and crypt-derived intestinal organoids
... Paneth cells (PC) are highly specialized secretory cells located at the base of crypts in the small intestine [16]. PC play a key role by releasing granules that contain anti- microbial proteins, such as lysozyme and ...
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Phase I/II Randomized Double-Blind Study of the Safety and Immunogenicity of a Nonadjuvanted Vero Cell Culture-Derived Whole-Virus H9N2 Influenza Vaccine in Healthy Adults
... of H9N2 vaccines based on a G1 lineage virus, which were undertaken in the United Kingdom, reported that the HI and MN antibody responses induced in individuals born in or before 1968 were higher than those ...
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Establishment of Influenza A Virus (H6N1) in Minor Poultry Species in Southern China
... H6N1 virus, A/teal/Hong Kong/W312/97 (W312), was isolated during the “bird flu” incident in Hong Kong in ...this virus might be the progenitor of the A/Hong Kong/156/97 (HK/97) H5N1 virus, as seven ...
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Serological prevalence of avian H9N2 influenza virus in dogs by hemagglutination inhibition assay in Kerman, southeast of Iran
... avian H9N2 influenza ...avian H9N2 influenza virus, ...avian H9N2 influenza virus was detected in farm dogs compared to pet ...avian H9N2 influenza viruses were detected in 48 ...
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Deletions in the Neuraminidase Stalk Region of H2N2 and H9N2 Avian Influenza Virus Subtypes Do Not Affect Postinfluenza Secondary Bacterial Pneumonia
... of virus bound to turkey ...purified virus preparations of WT and ⌬ NA mutant H2N2 and H9N2 strains were measured using the Mu-NANA substrate and compared to that of the control PR8 ...avian ...
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Sequence Analysis and Phylogenetic Study of Hemagglutinin Gene of H9N2 Subtype of Avian Influenza Virus Isolated during 1998-2002 in Iran
... MATERIALS AND METHODS Viruses. In this study, the 16 H9N2 virus samples were prepared from the Poultry Diseases Section of Razi Vaccine and Serum Research Institute, Karaj (Iran). The identification of ...
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Mutations during the Adaptation of H9N2 Avian Influenza Virus to the Respiratory Epithelium of Pigs Enhance Sialic Acid Binding Activity and Virulence in Mice
... avian H9N2 virus further by additional passages in porcine ...new virus lineage in swine after the first isolation of swine influenza virus ...
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Human Infection with an Avian H9N2 Influenza A Virus in Hong Kong in 2003
... those H9N2 influenza viruses have also been regularly isolated from differ- ent types of poultry in live poultry markets in Hong Kong and mainland China (1, 14, ...those H9N2 influenza viruses continued to ...
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