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 0.87 0.86 0.88
Beta - Other lineages 0.89 0.84 0.94
Delta - Other lineages 1.52 1.50 1.53
(Delta-Plus) - Other lineages 1.17 1.07 1.28
Gamma - Other lineages 0.98 0.97 0.99
Epsilon - Other lineages 0.85 0.75 0.95
Mu - Other lineages 1.51 1.22 1.86