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.
Geometric median trees from TransPhylo (left) and STraTUS (right). Gray nodes represent unsampled cases and in each case the index host in the tree is ringed in black. Although many individual transmission events differ, there are many points where the differences are “minor” and the trees share small subclusters of cases who transmitted to each other in different configurations.
