Fig 4. A shift of prevalence of strains with D614G mutations.

We measure the accumulated fraction of G-variants vs D-variants over time, while distinguishing international (blue) and domestic (orange) transmissions. The y-axis holds the total accumulated fraction of the G-variant. If the G-variant was substantially more transmissable, we would expect the domestic G/D ratio to clearly and increasingly dominate the international G/D ratio, in particular in light of the stronger domestic epidemiology after April 2020.