Seasonal influenza clade frequency and fitness estimates

Enabled by data from GISAID .

We gratefully acknowledge the authors, originating and submitting laboratories of sequences from the GISAID EpiFlu Database on which this research is based. The files produced by this workflow represent heavily derived GISAID data and are equivalent to downloadable results from outbreak.info, cov-spectrum.org, and covariants.org. This use is allowable under the GISAID Terms of Use.