SARS-CoV-2 Fitness Tracker for North Carolina

Below represents the fitted variant progression in North Carolina.

The below table represents the estimate growth rate advantages of the different variants over wild-type variants. Values greater than one indicate an advantage over the wild-type. This assumes a generation time of 4.7 days.

Fitness Advantages Over Wild-Type
Contrast Estimate Lower Upper
Alpha - Other lineages 0.76 0.75 0.78
Beta - Other lineages 0.90 0.87 0.94
Delta - Other lineages 1.28 1.27 1.28
(Delta-Plus) - Other lineages 1.09 1.02 1.15
Gamma - Other lineages 0.89 0.87 0.91
Epsilon - Other lineages 0.90 0.87 0.94
Mu - Other lineages 1.44 1.29 1.62
Omicron - Other lineages 1.13 1.10 1.17