Continuous adaptation of the HA and NA gene of H3N2 subtypes of avian influenza virus in South China, 2017-2018

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1. Program for National Broiler Industry [CARS-41-G16]
2. National Key Research and Development Program of China [2016YFD050 080 0]
3. Pourtry Industry Program of Guangdong Province [2017LM1114]
4. President Funding of Guangdong Academy of Agricultural Sciences [201625]