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.
Edges with a consistent AA at connecting nodes are shown with the same colour. These different coloured subnetworks likely represent a combination of features important in transmission for sets of viruses.
