FIG 6.
Emergence rate of Delta, Omicron BA.1, BA.2 and BA.5. Nonlinear (sigmoidal) curves were fitted for each variant using 5-day sliding window. The time it took a variant to increase from 10% to 90% case proportion (Δ) and Hillslope coefficient (nH) is indicated. (Delta: n = 4072, Daily Average = 26.27, nH 95% CI = 0.045 – 0.052; Omicron BA.1: n = 27396, Daily Average = 304.40, nH 95% CI = 0.11 – 0.13; Omicron BA.2: n = 23971, Daily Average = 171.22, nH 95% CI = 0.046 – 0.056; Omicron BA.5: n = 4597, Daily Average = 39.97, nH 95% CI = 0.050 – 0.058). Asterisk indicates calculation of emergence to 80% prevalence.