scholarly journals The diversity of avian influenza virus subtypes in live poultry markets before and during the second wave of A(H7N9) infections in Hangzhou, China

2015 ◽  
Vol 4 (1) ◽  
pp. 1-3 ◽  
Author(s):  
Jun Li ◽  
Xinfen Yu ◽  
Xiaoying Pu ◽  
Xuhui Yang ◽  
Yu Kou ◽  
...  
Keyword(s):  
Influenza Virus ◽  
Avian Influenza ◽  
Avian Influenza Virus ◽  
Live Poultry ◽  
Second Wave ◽  
Live Poultry Markets

The Impact of a Monthly Rest Day on Avian Influenza Virus Isolation Rates in Retail Live Poultry Markets in Hong Kong

2003 ◽  
Vol 47 (s3) ◽  
pp. 1037-1041 ◽  
Author(s):  
N. Y. Kung ◽  
Y. Guan ◽  
N. R. Perkins ◽  
L. Bissett ◽  
T. Ellis ◽  
...  
Keyword(s):  
Influenza Virus ◽  
Hong Kong ◽  
Avian Influenza ◽  
Avian Influenza Virus ◽  
Virus Isolation ◽  
Live Poultry ◽  
The Impact ◽  
Live Poultry Markets

scholarly journals Avian Influenza Virus Detection Rates in Poultry and Environment at Live Poultry Markets, Guangdong, China

2020 ◽  
Vol 26 (3) ◽  
pp. 591-595 ◽  
Author(s):  
Kit Ling Cheng ◽  
Jie Wu ◽  
Wei Ling Shen ◽  
Alvina Y.L. Wong ◽  
Qianfang Guo ◽  
...  
Keyword(s):  
Influenza Virus ◽  
Avian Influenza ◽  
Avian Influenza Virus ◽  
Virus Detection ◽  
Detection Rates ◽  
Live Poultry ◽  
Influenza Virus Detection ◽  
Live Poultry Markets

scholarly journals Pathogen change of avian influenza virus in the live poultry market before and after vaccination of poultry in southern China

2021 ◽  
Vol 18 (1) ◽  
Author(s):  
Jin Guo ◽  
Wentao Song ◽  
Xiansheng Ni ◽  
Wei Liu ◽  
Jingwen Wu ◽  
...  
Keyword(s):  
Influenza Virus ◽  
Avian Influenza ◽  
Avian Influenza Virus ◽  
Southern China ◽  
Influenza Viruses ◽  
Different Types ◽  
Before And After ◽  
Positive Rate ◽  
Live Poultry ◽  
Live Poultry Markets

Abstract Background The fifth wave of H7N9 avian influenza virus caused a large number of human infections and a large number of poultry deaths in China. Since September 2017, mainland China has begun to vaccinate poultry with H5 + H7 avian influenza vaccine. We investigated the avian influenza virus infections in different types of live poultry markets and samples before and after genotype H5 + H7 vaccination in Nanchang, and analyzed the changes of the HA subtypes of AIVs. Methods From 2016 to 2019, we monitored different live poultry markets and collected specimens, using real-time reverse transcription polymerase chain reaction (RT-PCR) technology to detect the nucleic acid of type A avian influenza virus in the samples. The H5, H7 and H9 subtypes of influenza viruses were further classified for the positive results. The χ2 test was used to compare the differences in the separation rates of different avian influenza subtypes. Results We analyzed 5,196 samples collected before and after vaccination and found that the infection rate of AIV in wholesale market (21.73%) was lower than that in retail market (24.74%) (P < 0.05). Among all the samples, the positive rate of sewage samples (33.90%) was the highest (P < 0.001). After vaccination, the positive rate of H5 and H7 subtypes decreased, and the positive rate of H9 subtype and untypable HA type increased significantly (P < 0.001). The positive rates of H9 subtype in different types of LPMs and different types of samples increased significantly (P < 0.01), and the positive rates of untypable HA type increased significantly in all environmental samples (P < 0.05). Conclusions Since vaccination, the positive rates of H5 and H7 subtypes have decreased, but the positive rates of H9 subtypes have increased to varying degrees in different testing locations and all samples. This results show that the government should establish more complete measures to achieve long-term control of the avian influenza virus.

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