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.
The viruses identified in this study are shown in boldface. For clarity large branches were collapsed and labeled according to the geographic location or collection years of viruses in that branch. Bootstrap values ≥70 are shown on branches.
