Prevalence of H7N9 subtype avian influenza viruses in poultry in China, 2013–2018

2019 ◽  
Author(s):  
Wenming Jiang ◽  
Guangyu Hou ◽  
Jinping Li ◽  
Cheng Peng ◽  
Suchun Wang ◽  
...  
Keyword(s):  
Avian Influenza ◽  
Influenza Viruses ◽  
Avian Influenza Viruses ◽  
H7n9 Subtype

scholarly journals Genetic analysis of novel avian A(H7N9) influenza viruses isolated from patients in China, February to April 2013

2013 ◽  
Vol 18 (15) ◽  
Author(s):  
T Kageyama ◽  
S Fujisaki ◽  
E Takashita ◽  
H Xu ◽  
S Yamada ◽  
...  
Keyword(s):  
Amino Acid ◽  
Genetic Analysis ◽  
Avian Influenza ◽  
Rna Polymerase ◽  
Influenza Viruses ◽  
The Novel ◽  
Avian Influenza Viruses ◽  
H7n9 Subtype ◽  
Efficient Replication ◽  
H7n9 Influenza

Novel influenza viruses of the H7N9 subtype have infected 33 and killed nine people in China as of 10 April 2013. Their haemagglutinin (HA) and neuraminidase genes probably originated from Eurasian avian influenza viruses; the remaining genes are closely related to avian H9N2 influenza viruses. Several characteristic amino acid changes in HA and the PB2 RNA polymerase subunit probably facilitate binding to human-type receptors and efficient replication in mammals, respectively, highlighting the pandemic potential of the novel viruses.

One-step fast and label-free imaging array for multiplexed detection of trace avian influenza viruses

2021 ◽  
pp. 338645
Author(s):  
Dagang Jiang ◽  
Yafei Tian ◽  
Yujiao Zhang ◽  
Xueyun Lu ◽  
Dan Xiao ◽  
...  
Keyword(s):  
Avian Influenza ◽  
Influenza Viruses ◽  
Label Free ◽  
Avian Influenza Viruses ◽  
Multiplexed Detection ◽  
Imaging Array ◽  
One Step

scholarly journals Pathogenic Assessment of Avian Influenza Viruses in Migratory Birds

2021 ◽  
pp. 1-40
Author(s):  
Eun-Ha Kim ◽  
Young-ll Kim ◽  
Se Mi Kim ◽  
Kwang-Min Yu ◽  
Mark Anthony B. Casel ◽  
...  
Keyword(s):  
Avian Influenza ◽  
Migratory Birds ◽  
Influenza Viruses ◽  
Avian Influenza Viruses

scholarly journals Development of an immunochromatographic strip for rapid detection of H7 subtype avian influenza viruses

2021 ◽  
Vol 18 (1) ◽  
Author(s):  
Ge Li ◽  
Xun Wang ◽  
Qingmei Li ◽  
Jifei Yang ◽  
Xiao Liu ◽  
...  
Keyword(s):  
Avian Influenza ◽  
Point Of Care ◽  
Influenza Viruses ◽  
Control Line ◽  
Avian Influenza Viruses ◽  
Igg Antibody ◽  
Immunochromatographic Strip ◽  
Live Poultry ◽  
Pathogenic Viruses ◽  
H7 Subtype

Abstract Background H7N9 avian influenza virus (AIV) including highly and low pathogenic viruses have been detected in China since 2013. H7N9 AIV has a high mortality rate after infection in humans, and most human cases have close contacted with poultry in the live poultry market. Therefore, it is necessary to develop a rapid point-of-care testing (POCT) technique for H7N9 AIV detection. Methods The H7N9 AIV was inactivated and purified, and was used as the antigen to immunize BALB/c. Twelve H7-HA specific monoclonal antibodies (McAbs) were produced through the hybridoma technique. The McAb 10A8 was conjugated with colloid gold as detecting antibody; McAb 9B6 was dispensed on the nitrocellulose membran as the capture test line and the Goat-anti mouse IgG antibody was dispensed as control line respectively. The immunochromatographic strip was prepared. Results The analysis of ELISA and virus neutralization test showed that the obtained McAbs specifically recognized H7 HA. Based on the prepared strip, the detection of H7 AIV was achieved within 10 min. No cross-reaction occurred between H7 AIVs and other tested viruses. The detection limit of the strip for H7 was 2.4 log10EID50/0.1 mL for chicken swab samples. Conclusion The McAbs were specific for H7 and the immunochromatographic strip developed in this study was convenient, rapid and reliable for the detection of H7 AIV. The strip could provide an effective method for the rapid and early detection of H7 AIV.

scholarly journals Heterologous Humoral Response against H5N1, H7N3, and H9N2 Avian Influenza Viruses after Seasonal Vaccination in a European Elderly Population

Vaccines ◽  
2017 ◽  
Vol 5 (3) ◽  
pp. 17 ◽  
Author(s):  
Ivan Sanz ◽  
Silvia Rojo ◽  
Sonia Tamames ◽  
José Eiros ◽  
Raúl Ortiz de Lejarazu
Keyword(s):  
Avian Influenza ◽  
Elderly Population ◽  
Humoral Response ◽  
Influenza Viruses ◽  
Avian Influenza Viruses
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