https://pubmed.ncbi.nlm.nih.gov/28278147/
During March 2013-February 24, 2017, annual epidemics of avian influenza A(H7N9) in China resulted in 1,258 avian influenza A(H7N9) virus infections in humans...
avian influenzaincreasehumaninfectionsvirus
https://pubmed.ncbi.nlm.nih.gov/17969848/
To study the correlation of human influenza A/H3N2 hemagglutinin gene variation and the epidemic from 1995 to 2005 in China, 550 HA1 sequences of H3N2 viruses...
human influenzastudycorrelationhemagglutinin