Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Phylogenetic tree of the hemagglutinin genes of representative clade 2.3.4.4h influenza A(H5N6) viruses. Samples sequenced for this study are in blue font. The nearest pre‐pandemic candidate vaccine virus is shown in red font. Numbers above and below branches represent bootstrap values after 1000 replicates following maximum likelihood analysis
