Volume 24, Number 7—July 2018
Research Letter
Poultry Infection with Influenza Viruses of Wild Bird Origin, China, 2016
Figure

Figure. Hypothetical evolutionary pathway of avian influenza viruses of H13N2 (A) and H13N8 virus (B) subtypes isolated from black-tailed gulls in eastern China, 2016. Gene segments are colored according to their origin. Dashed virions indicate unidentified viruses. HA, hemagglutinin; M, matrix protein; NA, neuraminidase; NP, nucleoprotein; NS, nonstructural protein; PA, polymerase acidic protein; PB, polymerase basic protein.
1All authors contributed equally to this article.
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