Fig. 2. Overview of the data flow from VirusSeq Data Portal to Duotang. Genomics and epidemiological data from VirusSeq are first processed by DNAStack’s Viral AI workflow. The result of this is a dataset containing SARS-CoV-2 lineage information. Duotang then retrieves this lineage information using Viral AI’s Global Alliance for Genomics and Health (GA4GH) compliant APIs for further analyses.