scholarly journals Knowledge, attitudes and practices relating to influenza A(H7N9) risk among live poultry traders in Guangzhou City, China

2014 ◽  
Vol 14 (1) ◽  
Author(s):  
Xiaowei Ma ◽  
Qiuyan Liao ◽  
Jun Yuan ◽  
Yufei Liu ◽  
Yanhui Liu ◽  
...  
2016 ◽  
Vol 21 (35) ◽  
Author(s):  
Jie Zhou ◽  
Jie Wu ◽  
Xianqiao Zeng ◽  
Guofeng Huang ◽  
Lirong Zou ◽  
...  

Zoonotic infections by avian influenza viruses occur at the human–poultry interface, but the modes of transmission have not been fully investigated. We assessed the potential for airborne and fomite transmission at live poultry markets in Guangzhou city and in Hong Kong Special Administrative Region (SAR), China, during 2014 and 2015. Viral genome and infectious avian influenza A viruses of H5N6, H7N9, and H9N2 subtypes were detected predominantly from particles larger or equal to 1 μm in diameter in the air sampled with cyclone-based bioaerosol samplers at the live poultry markets in Guangzhou. Influenza A(H9N2) viruses were ubiquitously isolated every month during the study period from air and environmental swabs, and different lineages of H9N2 virus were isolated from markets where chickens and minor land-based poultry were sold. The use of de-feathering devices increased the quantity of virus-laden airborne particles while market closure reduced the amount of such particles. The results highlight the possibility of airborne transmission of avian influenza viruses among poultry or from poultry to humans within such settings. This may explain epidemiological observations in which some patients with H7N9 infection reported being in markets but no direct contact with live poultry or poultry stalls.


2015 ◽  
Vol 3 (1) ◽  
pp. e15 ◽  
Author(s):  
Hua Gu ◽  
Zhenggang Jiang ◽  
Bin Chen ◽  
Jueman (Mandy) Zhang ◽  
Zhengting Wang ◽  
...  

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