FIG 4.

Genesis and evolutionary pathway of H10 viruses in Jiangxi. Either independent H10 and N8 viruses (dotted light blue lines) or an undetected H10N8 precursor in ducks (solid dark blue lines) was introduced to chickens and reassorted with enzootic H9N2 viruses. Reassortment of H10N8 viruses with N6 viruses is indicated by orange lines. Virus particles are indicated by ovals containing bars for the eight gene segments (PB2, PB1, PA, HA, NP, M, and NS, from top to bottom), colored by their source. NA stalk deletions are indicated by a broken line in segment 6.