Hong Kong Med J 2016;22(Suppl 4):S4-6
Genetic characterisation of H9N2 influenza viruses in southern China
Y Guan, GJD Smith
State Key Laboratory of Emerging Infectious Diseases, Department of Microbiology, The University of Hong Kong
1. Two lineages of H9N2 influenza virus continue to be enzootic in terrestrial poultry. In China, one lineage is predominately found in quail (G1-like), and the other (Ck/Bei or Y280-like) in chickens.
2. Both lineages of H9N2 influenza viruses have undergone a series of reassortments with H5N1 and other influenza viruses in southern China.
3. Genetic characterisation of the H9N2 viruses suggests that all have the potential to infect humans.