Purpose: This tool helps determine if a newly defined clade of related sequences should be considered a new subtype, a new sub-subtype, or part of a previously defined subtype.
Details: To use this tool, you can either enter a sequence alignment, which is used to create a neighbor joining tree to serve as the basis for the genetic distances, or you can enter your own tree as a PHYLIP outfile. The format of the input sequence names is critical. Please read the SUDI Explanation carefully before using this program.